Minimal MIDI Drum Kit with 3D Printer

This is minimal drum kit using Arduino UNO.

Jul 11, 2017

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40 respects

audio

music

Components and supplies

Zener Diode - 5.1V 1W

Resistor 1M ohm

USB-A to B Cable

Resistor 10k ohm

Standard LCD - 16x2 White on Blue

Arduino UNO

Force Sensitive Resistor (FSR)

Piezo

Lightning to USB Camera Adapter

Pushbutton switch 12mm

Slide Switch

TRS Socket

Tools and machines

Laser cutter (generic)

3D Printer (generic)

circle cutter

Soldering iron (generic)

Apps and platforms

Arduino IDE

Project description

Code

Hello Drum v2

arduino

Modified: 05/12/2019 by George Brotherston

1/*
2	Drum MIDI Controller
3	Created:  28/06/2017 by Ryo Kosaka as   " HELLO DRUM " Ver.1.0
4	Modified: 05/12/2019 by George Brotherston
5*/
6
7//   Library Includes
8
9//	#include <Arduino.h>		// Arduino Library (automatically   included)
10		// LOW (Line 41)
11		// HIGH (Line 40)
12		// INPUT_PULLUP   (Line 47)
13		// digitalRead() (Line 177)
14		// analogRead() (Line 178)
15	#include   <MIDI.h>           // MIDI Library		- Version: 4.3.1
16		// includes <midi_Namespace.h>
17			//   class MIDI (Line 30)
18		// class method 'begin' (Line 55)
19	#include <LiquidCrystal.h>   // LiquidCrystal	- Version: 1.0.7
20		// lcd object instantiatied (in Variables   section below) from LiquidCrystal class (Line 45)
21
22//	Variables - Declare   and Initialize
23
24	// Variables - Program
25		boolean	bSnareFlag			=   false;
26		boolean	bHihatFlag			= false;
27		boolean	bKickFlag			=   false;
28		boolean	bPedalFlag			= false;
29		boolean	bButtonState		=   true;
30		boolean	bButtonState_set	= true;
31		int		iUPDOWN				= 0;
32		int		iNEXTBACK			=   0;
33
34	//	Arrays - Program
35		// InstrumentSensor[6] = {threshold, sensitivity,   note, flag, velocity, iPeakValue}
36		// 'iPeakValue' and 'velocity' must be   zero for all InstrumentSensor arrays
37		// All 'aHIHAT[]' and 'aHIHAT_CLOSE[]'   array elements should have the same value except for 'note' element.
38			int		aSNARE[6]		=   {150, 950, 38, 3, 0, 0};
39			int		aSNARE_RIM[6]	= {5, 500, 37, 3 , 0, 0};
40			int		aHIHAT[6]		=   {100, 800, 46, 1, 0, 0};     
41			int		aHIHAT_CLOSE[6]	= {100, 800, 42,   1, 0, 0};
42			int		aKICK[6]		= {200, 700, 36, 1, 0, 0};
43		// Instrument_ContinuousController[4]   = {scantime, snare/rim, pedalVelocity , masktime}
44			int		aHIHAT_PEDAL[4]	=   {600, 0, 44, 0};
45		// InstrumentSensor_ParameterValue[4] = {threshold, sensitivity,   note, flag}
46			int		aSETTING[4]		= {4, 500 ,100 ,1};
47
48	//	Libraries
49		//	LiquidCrystal.h
50			//	Constants   (already defined in Library, still in scope?  If not then define below)
51				//	const   int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
52			//	lcd object instantiatiated   from LiquidCrystal class (LiquidCrystal.h Line 45)
53				LiquidCrystal lcd(rs,   en, d4, d5, d6, d7);	//	Associate LCD interface pins to associated Arduino pin   number
54		// MIDI.h
55			//	Initialize the library
56				MIDI_CREATE_DEFAULT_INSTANCE();
57
58//   Program Code
59
60	// Program Execution - Initial (program setup)
61
62		void   setup() {
63			MIDI.begin(10);						// begin (MIDI.h Line 55)
64			lcd.begin(16,   2);					// begin (LiquidCrystal.h Line 62)
65			lcd.print("INITIALIZING...");		//   print (LiquidCrystal.h Line 45)
66			lcd.setCursor(0, 1);				// setCursor   (LiquidCrystal.h Line 82)
67			lcd.print("DRUM MIDI CONTROLLER");
68			pinMode(6,   INPUT_PULLUP);			// pinMode (Arduino.h Line 175); INPUT_PULLUP (Arduino.h Line   47)
69			pinMode(7, INPUT_PULLUP);
70			pinMode(8, INPUT_PULLUP);
71			pinMode(9,   INPUT_PULLUP);
72			pinMode(10, INPUT_PULLUP);
73		}
74
75	// Program   Execution - Steadystate (continuous loop until power is lost)
76
77		void loop()   {
78		// Drum MIDI Controller Circuit
79		// Declare and Initialize Variables
80
81			int		iButton_set		=   digitalRead(6);	// Set Button			// digitalRead() (Arduino.h Line 177)
82			int		iButton_up		=   digitalRead(7);	// Up Button
83			int		iButton_down	= digitalRead(8);	//   Down Button
84			int		iButton_next	= digitalRead(9);	// Next Button
85			int		iButton_back	=   digitalRead(10);	// Back Button
86			int		iPiezoValue_A0	= analogRead(A0);    // Piezo - Snare Head	// analogRead() (Arduino.h Line 178)
87			int		iPiezoValue_A1	=   analogRead(A1);   // Piezo - Snare Rim
88			int		iPiezoValue_A2	= analogRead(A2);    // Hi-hat
89			int		iPiezoValue_A3	= analogRead(A3);   // Kick Drum
90			int		iFSRValue_A4	=   analogRead(A4);   // Hi-hat Pedal
91	
92		// Edit Mode
93
94			int		aUP[4]			=   {5, 50, 1,1};		// {threshold, sensitivity, note, flag}
95			int		aUP_ADVANCE[4]	=   {1, 50, 1,1};		// {scantime, rim/head, pedal velocity, masktime}
96
97			//   Note: aINSTRUMENT[] array was not declared in 'Arrays' above
98			char* aINSTRUMENT[]   = {
99				"SNARE HEAD",  "SNARE RIM", "HIHAT OPEN", "HIHAT CLOSE",   "HIHAT PEDAL", "KICK", "ADVANCED SETTING"
100			};
101
102			// Note:   aSETTING[] array WAS declared in 'Arrays' above
103			char* aSETTING[] = {
104				"THRESHOLD",   "SENSITIVITY", "NOTE", "FLAG"
105			};
106
107			// Note: aSETTING_ADVANCE[]   was not declared in 'Arrays' above
108			char* aSETTING_ADVANCE[] = {
109				"SCAN   TIME", "HEAD / RIM ","PEDAL VELO", "MASK TIME"
110			};
111
112			if   (iUPDOWN < 0) {
113				iUPDOWN = 6;
114			}
115
116			if (iUPDOWN > 6)   {
117				iUPDOWN = 0;
118			}
119
120			if (iNEXTBACK < 0) {
121				iNEXTBACK   = 3;
122			}
123
124			if (iNEXTBACK > 3) {
125				iNEXTBACK = 0;
126			}
127
128		//   Pushbutton EDIT
129			// LOW (Arduino.h Line 41)
130			if (iButton_set ==   LOW && bButtonState == true && bButtonState_set == true) {
131				lcd.clear();
132				lcd.print("EDIT");
133				bButtonState		=   false;
134				bButtonState_set	= false;
135				delay(500);
136			}
137
138			if   (iButton_set == LOW && bButtonState == true && bButtonState_set == false) {
139				lcd.clear();
140             	lcd.print("EDIT DONE");
141            	bButtonState		= false;
142             	bButtonState_set	= true;
143            	delay(500);
144			}
145
146			if   (iButton_up == LOW && bButtonState == true && bButtonState_set == false) {
147				switch   (iUPDOWN) {
148					case 0:
149					aSNARE[iNEXTBACK] = aSNARE[iNEXTBACK]   + aUP[iNEXTBACK];
150					break;
151
152					case 1:
153					aSNARE_RIM[iNEXTBACK]   = aSNARE_RIM[iNEXTBACK] + aUP[iNEXTBACK];
154					break;
155
156					case   2:
157					switch (iNEXTBACK) {
158						case 2:
159						aHIHAT[iNEXTBACK]   = aHIHAT[iNEXTBACK] + aUP[iNEXTBACK];
160						break;
161
162						default:
163						aHIHAT_CLOSE[iNEXTBACK]   = aHIHAT_CLOSE[iNEXTBACK] + aUP[iNEXTBACK];
164						aHIHAT[iNEXTBACK] = aHIHAT[iNEXTBACK]   + aUP[iNEXTBACK];
165					}
166					break;
167
168					case 3:
169					switch   (iNEXTBACK) {
170						case 2:
171						aHIHAT_CLOSE[iNEXTBACK] = aHIHAT_CLOSE[iNEXTBACK]   + aUP[iNEXTBACK];
172						break;
173						
174						default:
175						aHIHAT_CLOSE[iNEXTBACK]   = aHIHAT_CLOSE[iNEXTBACK] + aUP[iNEXTBACK];
176						aHIHAT[iNEXTBACK] = aHIHAT[iNEXTBACK]   + aUP[iNEXTBACK];
177					}
178					break;
179
180					case 4:
181					switch   (iNEXTBACK) {
182						case 0:
183						aHIHAT_PEDAL[iNEXTBACK] = aHIHAT_PEDAL[iNEXTBACK]   + aUP[iNEXTBACK];
184						break;
185						
186						case 2:
187						aHIHAT_PEDAL[iNEXTBACK]   = aHIHAT_PEDAL[iNEXTBACK] + aUP[iNEXTBACK];
188						break;
189					}
190					break;
191
192					case   5:
193					aKICK[iNEXTBACK] = aKICK[iNEXTBACK] + aUP[iNEXTBACK];
194					break;
195
196					case   6:
197					aSETTING[iNEXTBACK] = aSETTING[iNEXTBACK] + aUP_ADVANCE[iNEXTBACK];
198					break;
199				}
200				bButtonState   = false;
201				delay(30);
202			}
203
204			if (iButton_down == LOW &&   bButtonState == true && bButtonState_set == false) {
205
206				switch (iUPDOWN)   {
207					case 0:
208					aSNARE[iNEXTBACK] = aSNARE[iNEXTBACK] - aUP[iNEXTBACK];
209					break;
210
211					case   1:
212					aSNARE_RIM[iNEXTBACK] = aSNARE_RIM[iNEXTBACK] - aUP[iNEXTBACK];
213					break;
214
215					case   2:
216					switch (iNEXTBACK) {
217						case 2:
218						aHIHAT[iNEXTBACK]   = aHIHAT[iNEXTBACK] - aUP[iNEXTBACK];
219						break;
220
221						default:
222						aHIHAT_CLOSE[iNEXTBACK]   = aHIHAT_CLOSE[iNEXTBACK] - aUP[iNEXTBACK];
223						aHIHAT[iNEXTBACK] = aHIHAT[iNEXTBACK]   - aUP[iNEXTBACK];
224					}
225					break;
226
227					case 3:
228					switch   (iNEXTBACK) {
229						case 2:
230						aHIHAT_CLOSE[iNEXTBACK] = aHIHAT_CLOSE[iNEXTBACK]   - aUP[iNEXTBACK];
231						break;
232
233						default:
234						aHIHAT_CLOSE[iNEXTBACK]   = aHIHAT_CLOSE[iNEXTBACK] - aUP[iNEXTBACK];
235						aHIHAT[iNEXTBACK] = aHIHAT[iNEXTBACK]   - aUP[iNEXTBACK];
236					}
237					break;
238
239					case 4:
240					switch   (iNEXTBACK) {
241						case 0:
242						aHIHAT_PEDAL[iNEXTBACK] = aHIHAT_PEDAL[iNEXTBACK]   - aUP[iNEXTBACK];
243						break;
244
245						case 2:
246						aHIHAT_PEDAL[iNEXTBACK]   = aHIHAT_PEDAL[iNEXTBACK] - aUP[iNEXTBACK];
247						break;
248					}
249					break;
250
251					case   5:
252					aKICK[iNEXTBACK] = aKICK[iNEXTBACK] - aUP[iNEXTBACK];
253					break;
254
255					case   6:
256					aSETTING[iNEXTBACK] = aSETTING[iNEXTBACK] - aUP_ADVANCE[iNEXTBACK];
257					break;
258				}
259				bButtonState   = false;
260				delay(30);
261			}
262
263		// Pushbuttons UP; DOWN; NEXT;   BACK
264			if (iButton_up == LOW && bButtonState == true && bButtonState_set   == true) {
265				iUPDOWN = ++iUPDOWN;
266				bButtonState = false;
267				delay(30);
268			}
269
270			if   (iButton_down == LOW && bButtonState == true && bButtonState_set == true) {
271				iUPDOWN   = --iUPDOWN;
272				bButtonState = false;
273				delay(30);
274			}
275
276			if   (iButton_next == LOW && bButtonState == true && bButtonState_set == true) {
277				iNEXTBACK   = ++iNEXTBACK;
278				bButtonState = false;
279				delay(30);
280			}
281
282			if   (iButton_back == LOW && bButtonState == true && bButtonState_set == true) {
283				iNEXTBACK   = --iNEXTBACK;
284				bButtonState = false;
285				delay(30);
286			}
287
288			if   (bButtonState == false && iButton_up == HIGH && iButton_down == HIGH && iButton_next   == HIGH && iButton_back == HIGH && iButton_set == HIGH) {
289				// HIGH is   defined in Arduino.h Line 40
290
291				switch (iUPDOWN) {
292
293					case   0:
294					lcd.clear();
295					lcd.print(aINSTRUMENT[iUPDOWN]);
296					lcd.setCursor(0,   1);
297					lcd.print(aSETTING[iNEXTBACK]);
298					lcd.setCursor(12,   1);
299					lcd.print(aSNARE[iNEXTBACK]);
300					break;
301
302					case   1:
303					lcd.clear();
304					lcd.print(aINSTRUMENT[iUPDOWN]);
305					lcd.setCursor(0,   1);
306					lcd.print(aSETTING[iNEXTBACK]);
307					lcd.setCursor(12,   1);
308					lcd.print(aSNARE_RIM[iNEXTBACK]);
309					break;
310
311					case   2:
312					lcd.clear();
313					lcd.print(aINSTRUMENT[iUPDOWN]);
314					lcd.setCursor(0,   1);
315					lcd.print(aSETTING[iNEXTBACK]);
316					lcd.setCursor(12,   1);
317					lcd.print(aHIHAT[iNEXTBACK]);
318					break;
319
320					case   3:
321					lcd.clear();lcd.print(aINSTRUMENT[iUPDOWN]);
322					lcd.setCursor(0,   1);
323					lcd.print(aSETTING[iNEXTBACK]);
324					lcd.setCursor(12,   1);
325					lcd.print(aHIHAT_CLOSE[iNEXTBACK]);
326					break;
327
328					case   4:
329					lcd.clear();
330					lcd.print(aINSTRUMENT[iUPDOWN]);
331					lcd.setCursor(0,   1);
332					lcd.print(aSETTING[iNEXTBACK]);
333					lcd.setCursor(12,   1);
334					lcd.print(aHIHAT_PEDAL[iNEXTBACK]);
335					break;
336
337					case   5:
338					lcd.clear();
339					lcd.print(aINSTRUMENT[iUPDOWN]);
340					lcd.setCursor(0,   1);
341					lcd.print(aSETTING[iNEXTBACK]);
342					lcd.setCursor(12,   1);
343					lcd.print(aKICK[iNEXTBACK]);
344					break;
345
346					case   6:
347					lcd.clear();
348					lcd.print(aINSTRUMENT[iUPDOWN]);
349					lcd.setCursor(0,   1);
350					lcd.print(aSETTING_ADVANCE[iNEXTBACK]);
351					lcd.setCursor(12,   1);
352					lcd.print(aSETTING[iNEXTBACK]);
353					break;
354				}
355
356				bButtonState   = true;
357			}
358
359		// Instrument Sensors
360
361			// Snare Drum
362			if   (iPiezoValue_A0 > aSNARE[0] && bSnareFlag == false) {
363
364				for (int i   = 0; i < aSETTING[0]; i++) {
365					int iPeak_A0 = analogRead(A0);
366					int   iPeak_A1 = analogRead(A1);
367					delay(1);
368					if (iPeak_A0 > aSNARE[4])   {
369						aSNARE[4] = iPeak_A0;
370					}
371					if (iPeak_A1   > aSNARE_RIM[4]) {
372						aSNARE_RIM[4] = iPeak_A1;
373					}
374				}
375				aSNARE[5]   = aSNARE[4];
376				aSNARE_RIM[5] = aSNARE_RIM[4];
377				aSNARE[4] = map(aSNARE[4],   aSNARE[0], aSNARE[1], 0, 127);
378				aSNARE_RIM[4] = map(aSNARE_RIM[4], aSNARE_RIM[0],   aSNARE_RIM[1], 0, 127);
379				aSNARE[4] = (aSNARE[4] *  aSNARE[4]) / 127; //   Curve setting
380
381			//aSNARE_RIM[4] = (aSNARE_RIM[4] * aSNARE_RIM[4]) / 127;
382				if   (aSNARE[4] <= 1) {
383					aSNARE[4] = 1;
384				}
385				if (aSNARE[4]   > 127) {
386					aSNARE[4] = 127;
387				}
388				if (aSNARE_RIM[4]   <= 0) {
389					aSNARE_RIM[4] = 0;
390				}
391				if (aSNARE_RIM[4]   > 127) {
392					aSNARE_RIM[4] = 127;
393				}
394				if (aSNARE_RIM[5]   > aSETTING[1]) {
395					MIDI.sendNoteOn(aSNARE_RIM[2], aSNARE_RIM[4], 1);    //(note, velocity, channel)
396					MIDI.sendNoteOn(aSNARE_RIM[2], 0, 1);
397					lcd.clear();
398					lcd.print("SNARE   RIM");
399					lcd.setCursor(0, 1);
400					lcd.print(aSNARE_RIM[4]);
401					bSnareFlag   = true;
402				}
403
404			//else if (aSNARE[5] > aSNARE_RIM[5])
405				else   {
406					MIDI.sendNoteOn(aSNARE[2], aSNARE[4], 1);   //(note, velocity, channel)
407					MIDI.sendNoteOn(aSNARE[2],   0, 1);
408					lcd.clear();
409					lcd.print("SNARE HEAD");
410					lcd.setCursor(0,   1);
411					lcd.print(aSNARE[4]);
412				//lcd.setCursor(10, 1);
413				//lcd.print(aSNARE_RIM[5]);
414					bSnareFlag   = true;
415				}
416			}
417
418		// Hi-Hat Cymbal
419			if (iPiezoValue_A2   > aHIHAT[0] && bHihatFlag == false) {
420				for (int i = 0; i < aSETTING[0];   i++) {
421					int iPeak_A2 = analogRead(A2);
422					delay(1);
423					if   (iPeak_A2 > aHIHAT[4]) {
424						aHIHAT[4] = iPeak_A2;
425					}
426				}
427				aHIHAT[5]   = aHIHAT[4];
428				aHIHAT[4] = map(aHIHAT[4], aHIHAT[0], aHIHAT[1], 0, 127);
429				aHIHAT[4]   = (aHIHAT[4] * aHIHAT[4]) / 127;
430				if (aHIHAT[4] <= 1) {
431					aHIHAT[4]   = 1;
432				}
433				if (aHIHAT[4] > 127) {
434					aHIHAT[4] = 127;
435				}
436				if   (iPiezoValue_A0 < aHIHAT_PEDAL[0]) {
437					MIDI.sendNoteOn(aHIHAT[2], aHIHAT[4],   1);
438					MIDI.sendNoteOn(aHIHAT[2], 0, 1);
439					lcd.clear();
440					lcd.print("HIHAT   OPEN");
441					lcd.setCursor(0, 1);
442					lcd.print(aHIHAT[4]);
443					bHihatFlag   = true;
444				}
445				else if (iPiezoValue_A0 >= aHIHAT_PEDAL[0]) {
446					MIDI.sendNoteOn(aHIHAT_CLOSE[2],   aHIHAT[4], 1);
447					MIDI.sendNoteOn(aHIHAT_CLOSE[2], 0, 1);
448					lcd.clear();
449					lcd.print("HIHAT   CLOSE");
450					lcd.setCursor(0, 1);
451					lcd.print(aHIHAT[4]);
452					bHihatFlag   = true;
453				}
454			}
455
456		// Hi-hat Pedal
457			if (iPiezoValue_A0   > aHIHAT_PEDAL[0] && bPedalFlag == false) {
458				MIDI.sendNoteOn(aHIHAT_PEDAL[2],   aSETTING[2], 1);  // (note, velocity, channel)
459				MIDI.sendNoteOn(aHIHAT_PEDAL[2],   0, 1);
460				lcd.clear();
461				lcd.print("HIHAT PEDAL");
462				lcd.setCursor(0,   1);
463				lcd.print(aSETTING[2]);
464				bPedalFlag = true;
465			}
466
467		//   Kick Drum
468			if (iPiezoValue_A3 > aKICK[0] && bKickFlag == false) {
469				for   (int i = 0; i < aSETTING[0]; i++) {
470					int iPeak_A3 = analogRead(A3);
471					delay(1);
472					if   (iPeak_A3 > aKICK[4]) {
473						aKICK[4] = iPeak_A3;
474					}
475				}
476
477				aKICK[5]   = aKICK[4];
478				aKICK[4] = map(aKICK[4], aKICK[0], aKICK[1], 0, 127);
479				aKICK[4]   = (aKICK[4] * aKICK[4]) / 127;
480				if (aKICK[4] <= 1) {
481					aKICK[4]   = 1;
482				}
483				if (aKICK[4] > 127) {
484					aKICK[4] = 127;
485				}
486				MIDI.sendNoteOn(aKICK[2],   aKICK[4], 1);
487				MIDI.sendNoteOn(aKICK[2], 0, 1);
488				lcd.clear();
489				lcd.print("KICK");
490				lcd.setCursor(0,   1);
491				lcd.print(aKICK[4]);
492				bKickFlag = true;
493			}
494
495//   --- BEGIN 'Code in Progress' --- //
496// --- I could be wrong, but this is what   it appears to be --- and out of curiousity what is purpose of this sequence? --   //
497
498			// I=(A0);  // Previous Code
499			// -- DOES iSensorValue_A0   need to be declared as an integer?  How does this relate to iPiezoValue_A0?  --   //
500			if (iSensorValue_A0 < (aSNARE[5] * (0.01 * aSNARE[3]))) {
501				bSnareFlag   = false;
502			}
503			if (iPiezoValue_A0 <= aHIHAT_PEDAL[0] && iPiezoValue_A2   < (aHIHAT[5] * (0.01 * aHIHAT[3])) && bHihatFlag == true) {
504				delay(aSETTING[3]);
505				//   iSensorValue_A1 is reading analogRead(A2), but this is aHIHAT_PEDAL (which is analogRead(A2)
506				int   iSensorValue_A1 = analogRead(A2);
507				if (iSensorValue_A1 < (aHIHAT[5] *   (0.01 * aHIHAT[3]))) {
508					bHihatFlag = false;
509				}
510			}
511			if   (iPiezoValue_A0 >= aHIHAT_PEDAL[0] && iPiezoValue_A2 < (aHIHAT[5] *(0.01 * aHIHAT[3]))   && bHihatFlag == true) {
512				delay(aSETTING[3]);
513				int iSensorValue_A2   = analogRead(A2);
514				if (iSensorValue_A2 < (aHIHAT[5] * (0.01 * aHIHAT[3])))   {
515					bHihatFlag = false;
516				}
517			}
518			if (iPiezoValue_A3   < (aKICK[5] * (0.01 * aKICK[3])) && bKickFlag == true) {
519				delay(aSETTING[3]);
520				//   -- Should declared iSensorValue_A3 be iPiezoValue_A3?  iSensorValue_A3 is declared   but not used anywhere??
521				int iSensorValue_A3 = analogRead(A3);
522				if   (iPiezoValue_A3 < (aKICK[5] * (0.01 * aKICK[3]))) {
523				bKickFlag = false;
524				}
525			}
526			if   (iPiezoValue_A0 <= aHIHAT_PEDAL[0] && bPedalFlag == true) {
527				bPedalFlag   = false;
528			}
529
530// --- END 'Code in Progress' --- //
531		}

/*
	Drum MIDI Controller
	Created:  28/06/2017 by Ryo Kosaka as   " HELLO DRUM " Ver.1.0
	Modified: 05/12/2019 by George Brotherston
*/

//   Library Includes

//	#include <Arduino.h>		// Arduino Library (automatically   included)
		// LOW (Line 41)
		// HIGH (Line 40)
		// INPUT_PULLUP   (Line 47)
		// digitalRead() (Line 177)
		// analogRead() (Line 178)
	#include   <MIDI.h>           // MIDI Library		- Version: 4.3.1
		// includes <midi_Namespace.h>
			//   class MIDI (Line 30)
		// class method 'begin' (Line 55)
	#include <LiquidCrystal.h>   // LiquidCrystal	- Version: 1.0.7
		// lcd object instantiatied (in Variables   section below) from LiquidCrystal class (Line 45)

//	Variables - Declare   and Initialize

	// Variables - Program
		boolean	bSnareFlag			=   false;
		boolean	bHihatFlag			= false;
		boolean	bKickFlag			=   false;
		boolean	bPedalFlag			= false;
		boolean	bButtonState		=   true;
		boolean	bButtonState_set	= true;
		int		iUPDOWN				= 0;
		int		iNEXTBACK			=   0;

	//	Arrays - Program
		// InstrumentSensor[6] = {threshold, sensitivity,   note, flag, velocity, iPeakValue}
		// 'iPeakValue' and 'velocity' must be   zero for all InstrumentSensor arrays
		// All 'aHIHAT[]' and 'aHIHAT_CLOSE[]'   array elements should have the same value except for 'note' element.
			int		aSNARE[6]		=   {150, 950, 38, 3, 0, 0};
			int		aSNARE_RIM[6]	= {5, 500, 37, 3 , 0, 0};
			int		aHIHAT[6]		=   {100, 800, 46, 1, 0, 0};     
			int		aHIHAT_CLOSE[6]	= {100, 800, 42,   1, 0, 0};
			int		aKICK[6]		= {200, 700, 36, 1, 0, 0};
		// Instrument_ContinuousController[4]   = {scantime, snare/rim, pedalVelocity , masktime}
			int		aHIHAT_PEDAL[4]	=   {600, 0, 44, 0};
		// InstrumentSensor_ParameterValue[4] = {threshold, sensitivity,   note, flag}
			int		aSETTING[4]		= {4, 500 ,100 ,1};

	//	Libraries
		//	LiquidCrystal.h
			//	Constants   (already defined in Library, still in scope?  If not then define below)
				//	const   int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
			//	lcd object instantiatiated   from LiquidCrystal class (LiquidCrystal.h Line 45)
				LiquidCrystal lcd(rs,   en, d4, d5, d6, d7);	//	Associate LCD interface pins to associated Arduino pin   number
		// MIDI.h
			//	Initialize the library
				MIDI_CREATE_DEFAULT_INSTANCE();

//   Program Code

	// Program Execution - Initial (program setup)

		void   setup() {
			MIDI.begin(10);						// begin (MIDI.h Line 55)
			lcd.begin(16,   2);					// begin (LiquidCrystal.h Line 62)
			lcd.print("INITIALIZING...");		//   print (LiquidCrystal.h Line 45)
			lcd.setCursor(0, 1);				// setCursor   (LiquidCrystal.h Line 82)
			lcd.print("DRUM MIDI CONTROLLER");
			pinMode(6,   INPUT_PULLUP);			// pinMode (Arduino.h Line 175); INPUT_PULLUP (Arduino.h Line   47)
			pinMode(7, INPUT_PULLUP);
			pinMode(8, INPUT_PULLUP);
			pinMode(9,   INPUT_PULLUP);
			pinMode(10, INPUT_PULLUP);
		}

	// Program   Execution - Steadystate (continuous loop until power is lost)

		void loop()   {
		// Drum MIDI Controller Circuit
		// Declare and Initialize Variables

			int		iButton_set		=   digitalRead(6);	// Set Button			// digitalRead() (Arduino.h Line 177)
			int		iButton_up		=   digitalRead(7);	// Up Button
			int		iButton_down	= digitalRead(8);	//   Down Button
			int		iButton_next	= digitalRead(9);	// Next Button
			int		iButton_back	=   digitalRead(10);	// Back Button
			int		iPiezoValue_A0	= analogRead(A0);    // Piezo - Snare Head	// analogRead() (Arduino.h Line 178)
			int		iPiezoValue_A1	=   analogRead(A1);   // Piezo - Snare Rim
			int		iPiezoValue_A2	= analogRead(A2);    // Hi-hat
			int		iPiezoValue_A3	= analogRead(A3);   // Kick Drum
			int		iFSRValue_A4	=   analogRead(A4);   // Hi-hat Pedal
	
		// Edit Mode

			int		aUP[4]			=   {5, 50, 1,1};		// {threshold, sensitivity, note, flag}
			int		aUP_ADVANCE[4]	=   {1, 50, 1,1};		// {scantime, rim/head, pedal velocity, masktime}

			//   Note: aINSTRUMENT[] array was not declared in 'Arrays' above
			char* aINSTRUMENT[]   = {
				"SNARE HEAD",  "SNARE RIM", "HIHAT OPEN", "HIHAT CLOSE",   "HIHAT PEDAL", "KICK", "ADVANCED SETTING"
			};

			// Note:   aSETTING[] array WAS declared in 'Arrays' above
			char* aSETTING[] = {
				"THRESHOLD",   "SENSITIVITY", "NOTE", "FLAG"
			};

			// Note: aSETTING_ADVANCE[]   was not declared in 'Arrays' above
			char* aSETTING_ADVANCE[] = {
				"SCAN   TIME", "HEAD / RIM ","PEDAL VELO", "MASK TIME"
			};

			if   (iUPDOWN < 0) {
				iUPDOWN = 6;
			}

			if (iUPDOWN > 6)   {
				iUPDOWN = 0;
			}

			if (iNEXTBACK < 0) {
				iNEXTBACK   = 3;
			}

			if (iNEXTBACK > 3) {
				iNEXTBACK = 0;
			}

		//   Pushbutton EDIT
			// LOW (Arduino.h Line 41)
			if (iButton_set ==   LOW && bButtonState == true && bButtonState_set == true) {
				lcd.clear();
				lcd.print("EDIT");
				bButtonState		=   false;
				bButtonState_set	= false;
				delay(500);
			}

			if   (iButton_set == LOW && bButtonState == true && bButtonState_set == false) {
				lcd.clear();
             	lcd.print("EDIT DONE");
            	bButtonState		= false;
             	bButtonState_set	= true;
            	delay(500);
			}

			if   (iButton_up == LOW && bButtonState == true && bButtonState_set == false) {
				switch   (iUPDOWN) {
					case 0:
					aSNARE[iNEXTBACK] = aSNARE[iNEXTBACK]   + aUP[iNEXTBACK];
					break;

					case 1:
					aSNARE_RIM[iNEXTBACK]   = aSNARE_RIM[iNEXTBACK] + aUP[iNEXTBACK];
					break;

					case   2:
					switch (iNEXTBACK) {
						case 2:
						aHIHAT[iNEXTBACK]   = aHIHAT[iNEXTBACK] + aUP[iNEXTBACK];
						break;

						default:
						aHIHAT_CLOSE[iNEXTBACK]   = aHIHAT_CLOSE[iNEXTBACK] + aUP[iNEXTBACK];
						aHIHAT[iNEXTBACK] = aHIHAT[iNEXTBACK]   + aUP[iNEXTBACK];
					}
					break;

					case 3:
					switch   (iNEXTBACK) {
						case 2:
						aHIHAT_CLOSE[iNEXTBACK] = aHIHAT_CLOSE[iNEXTBACK]   + aUP[iNEXTBACK];
						break;
						
						default:
						aHIHAT_CLOSE[iNEXTBACK]   = aHIHAT_CLOSE[iNEXTBACK] + aUP[iNEXTBACK];
						aHIHAT[iNEXTBACK] = aHIHAT[iNEXTBACK]   + aUP[iNEXTBACK];
					}
					break;

					case 4:
					switch   (iNEXTBACK) {
						case 0:
						aHIHAT_PEDAL[iNEXTBACK] = aHIHAT_PEDAL[iNEXTBACK]   + aUP[iNEXTBACK];
						break;
						
						case 2:
						aHIHAT_PEDAL[iNEXTBACK]   = aHIHAT_PEDAL[iNEXTBACK] + aUP[iNEXTBACK];
						break;
					}
					break;

					case   5:
					aKICK[iNEXTBACK] = aKICK[iNEXTBACK] + aUP[iNEXTBACK];
					break;

					case   6:
					aSETTING[iNEXTBACK] = aSETTING[iNEXTBACK] + aUP_ADVANCE[iNEXTBACK];
					break;
				}
				bButtonState   = false;
				delay(30);
			}

			if (iButton_down == LOW &&   bButtonState == true && bButtonState_set == false) {

				switch (iUPDOWN)   {
					case 0:
					aSNARE[iNEXTBACK] = aSNARE[iNEXTBACK] - aUP[iNEXTBACK];
					break;

					case   1:
					aSNARE_RIM[iNEXTBACK] = aSNARE_RIM[iNEXTBACK] - aUP[iNEXTBACK];
					break;

					case   2:
					switch (iNEXTBACK) {
						case 2:
						aHIHAT[iNEXTBACK]   = aHIHAT[iNEXTBACK] - aUP[iNEXTBACK];
						break;

						default:
						aHIHAT_CLOSE[iNEXTBACK]   = aHIHAT_CLOSE[iNEXTBACK] - aUP[iNEXTBACK];
						aHIHAT[iNEXTBACK] = aHIHAT[iNEXTBACK]   - aUP[iNEXTBACK];
					}
					break;

					case 3:
					switch   (iNEXTBACK) {
						case 2:
						aHIHAT_CLOSE[iNEXTBACK] = aHIHAT_CLOSE[iNEXTBACK]   - aUP[iNEXTBACK];
						break;

						default:
						aHIHAT_CLOSE[iNEXTBACK]   = aHIHAT_CLOSE[iNEXTBACK] - aUP[iNEXTBACK];
						aHIHAT[iNEXTBACK] = aHIHAT[iNEXTBACK]   - aUP[iNEXTBACK];
					}
					break;

					case 4:
					switch   (iNEXTBACK) {
						case 0:
						aHIHAT_PEDAL[iNEXTBACK] = aHIHAT_PEDAL[iNEXTBACK]   - aUP[iNEXTBACK];
						break;

						case 2:
						aHIHAT_PEDAL[iNEXTBACK]   = aHIHAT_PEDAL[iNEXTBACK] - aUP[iNEXTBACK];
						break;
					}
					break;

					case   5:
					aKICK[iNEXTBACK] = aKICK[iNEXTBACK] - aUP[iNEXTBACK];
					break;

					case   6:
					aSETTING[iNEXTBACK] = aSETTING[iNEXTBACK] - aUP_ADVANCE[iNEXTBACK];
					break;
				}
				bButtonState   = false;
				delay(30);
			}

		// Pushbuttons UP; DOWN; NEXT;   BACK
			if (iButton_up == LOW && bButtonState == true && bButtonState_set   == true) {
				iUPDOWN = ++iUPDOWN;
				bButtonState = false;
				delay(30);
			}

			if   (iButton_down == LOW && bButtonState == true && bButtonState_set == true) {
				iUPDOWN   = --iUPDOWN;
				bButtonState = false;
				delay(30);
			}

			if   (iButton_next == LOW && bButtonState == true && bButtonState_set == true) {
				iNEXTBACK   = ++iNEXTBACK;
				bButtonState = false;
				delay(30);
			}

			if   (iButton_back == LOW && bButtonState == true && bButtonState_set == true) {
				iNEXTBACK   = --iNEXTBACK;
				bButtonState = false;
				delay(30);
			}

			if   (bButtonState == false && iButton_up == HIGH && iButton_down == HIGH && iButton_next   == HIGH && iButton_back == HIGH && iButton_set == HIGH) {
				// HIGH is   defined in Arduino.h Line 40

				switch (iUPDOWN) {

					case   0:
					lcd.clear();
					lcd.print(aINSTRUMENT[iUPDOWN]);
					lcd.setCursor(0,   1);
					lcd.print(aSETTING[iNEXTBACK]);
					lcd.setCursor(12,   1);
					lcd.print(aSNARE[iNEXTBACK]);
					break;

					case   1:
					lcd.clear();
					lcd.print(aINSTRUMENT[iUPDOWN]);
					lcd.setCursor(0,   1);
					lcd.print(aSETTING[iNEXTBACK]);
					lcd.setCursor(12,   1);
					lcd.print(aSNARE_RIM[iNEXTBACK]);
					break;

					case   2:
					lcd.clear();
					lcd.print(aINSTRUMENT[iUPDOWN]);
					lcd.setCursor(0,   1);
					lcd.print(aSETTING[iNEXTBACK]);
					lcd.setCursor(12,   1);
					lcd.print(aHIHAT[iNEXTBACK]);
					break;

					case   3:
					lcd.clear();lcd.print(aINSTRUMENT[iUPDOWN]);
					lcd.setCursor(0,   1);
					lcd.print(aSETTING[iNEXTBACK]);
					lcd.setCursor(12,   1);
					lcd.print(aHIHAT_CLOSE[iNEXTBACK]);
					break;

					case   4:
					lcd.clear();
					lcd.print(aINSTRUMENT[iUPDOWN]);
					lcd.setCursor(0,   1);
					lcd.print(aSETTING[iNEXTBACK]);
					lcd.setCursor(12,   1);
					lcd.print(aHIHAT_PEDAL[iNEXTBACK]);
					break;

					case   5:
					lcd.clear();
					lcd.print(aINSTRUMENT[iUPDOWN]);
					lcd.setCursor(0,   1);
					lcd.print(aSETTING[iNEXTBACK]);
					lcd.setCursor(12,   1);
					lcd.print(aKICK[iNEXTBACK]);
					break;

					case   6:
					lcd.clear();
					lcd.print(aINSTRUMENT[iUPDOWN]);
					lcd.setCursor(0,   1);
					lcd.print(aSETTING_ADVANCE[iNEXTBACK]);
					lcd.setCursor(12,   1);
					lcd.print(aSETTING[iNEXTBACK]);
					break;
				}

				bButtonState   = true;
			}

		// Instrument Sensors

			// Snare Drum
			if   (iPiezoValue_A0 > aSNARE[0] && bSnareFlag == false) {

				for (int i   = 0; i < aSETTING[0]; i++) {
					int iPeak_A0 = analogRead(A0);
					int   iPeak_A1 = analogRead(A1);
					delay(1);
					if (iPeak_A0 > aSNARE[4])   {
						aSNARE[4] = iPeak_A0;
					}
					if (iPeak_A1   > aSNARE_RIM[4]) {
						aSNARE_RIM[4] = iPeak_A1;
					}
				}
				aSNARE[5]   = aSNARE[4];
				aSNARE_RIM[5] = aSNARE_RIM[4];
				aSNARE[4] = map(aSNARE[4],   aSNARE[0], aSNARE[1], 0, 127);
				aSNARE_RIM[4] = map(aSNARE_RIM[4], aSNARE_RIM[0],   aSNARE_RIM[1], 0, 127);
				aSNARE[4] = (aSNARE[4] *  aSNARE[4]) / 127; //   Curve setting

			//aSNARE_RIM[4] = (aSNARE_RIM[4] * aSNARE_RIM[4]) / 127;
				if   (aSNARE[4] <= 1) {
					aSNARE[4] = 1;
				}
				if (aSNARE[4]   > 127) {
					aSNARE[4] = 127;
				}
				if (aSNARE_RIM[4]   <= 0) {
					aSNARE_RIM[4] = 0;
				}
				if (aSNARE_RIM[4]   > 127) {
					aSNARE_RIM[4] = 127;
				}
				if (aSNARE_RIM[5]   > aSETTING[1]) {
					MIDI.sendNoteOn(aSNARE_RIM[2], aSNARE_RIM[4], 1);    //(note, velocity, channel)
					MIDI.sendNoteOn(aSNARE_RIM[2], 0, 1);
					lcd.clear();
					lcd.print("SNARE   RIM");
					lcd.setCursor(0, 1);
					lcd.print(aSNARE_RIM[4]);
					bSnareFlag   = true;
				}

			//else if (aSNARE[5] > aSNARE_RIM[5])
				else   {
					MIDI.sendNoteOn(aSNARE[2], aSNARE[4], 1);   //(note, velocity, channel)
					MIDI.sendNoteOn(aSNARE[2],   0, 1);
					lcd.clear();
					lcd.print("SNARE HEAD");
					lcd.setCursor(0,   1);
					lcd.print(aSNARE[4]);
				//lcd.setCursor(10, 1);
				//lcd.print(aSNARE_RIM[5]);
					bSnareFlag   = true;
				}
			}

		// Hi-Hat Cymbal
			if (iPiezoValue_A2   > aHIHAT[0] && bHihatFlag == false) {
				for (int i = 0; i < aSETTING[0];   i++) {
					int iPeak_A2 = analogRead(A2);
					delay(1);
					if   (iPeak_A2 > aHIHAT[4]) {
						aHIHAT[4] = iPeak_A2;
					}
				}
				aHIHAT[5]   = aHIHAT[4];
				aHIHAT[4] = map(aHIHAT[4], aHIHAT[0], aHIHAT[1], 0, 127);
				aHIHAT[4]   = (aHIHAT[4] * aHIHAT[4]) / 127;
				if (aHIHAT[4] <= 1) {
					aHIHAT[4]   = 1;
				}
				if (aHIHAT[4] > 127) {
					aHIHAT[4] = 127;
				}
				if   (iPiezoValue_A0 < aHIHAT_PEDAL[0]) {
					MIDI.sendNoteOn(aHIHAT[2], aHIHAT[4],   1);
					MIDI.sendNoteOn(aHIHAT[2], 0, 1);
					lcd.clear();
					lcd.print("HIHAT   OPEN");
					lcd.setCursor(0, 1);
					lcd.print(aHIHAT[4]);
					bHihatFlag   = true;
				}
				else if (iPiezoValue_A0 >= aHIHAT_PEDAL[0]) {
					MIDI.sendNoteOn(aHIHAT_CLOSE[2],   aHIHAT[4], 1);
					MIDI.sendNoteOn(aHIHAT_CLOSE[2], 0, 1);
					lcd.clear();
					lcd.print("HIHAT   CLOSE");
					lcd.setCursor(0, 1);
					lcd.print(aHIHAT[4]);
					bHihatFlag   = true;
				}
			}

		// Hi-hat Pedal
			if (iPiezoValue_A0   > aHIHAT_PEDAL[0] && bPedalFlag == false) {
				MIDI.sendNoteOn(aHIHAT_PEDAL[2],   aSETTING[2], 1);  // (note, velocity, channel)
				MIDI.sendNoteOn(aHIHAT_PEDAL[2],   0, 1);
				lcd.clear();
				lcd.print("HIHAT PEDAL");
				lcd.setCursor(0,   1);
				lcd.print(aSETTING[2]);
				bPedalFlag = true;
			}

		//   Kick Drum
			if (iPiezoValue_A3 > aKICK[0] && bKickFlag == false) {
				for   (int i = 0; i < aSETTING[0]; i++) {
					int iPeak_A3 = analogRead(A3);
					delay(1);
					if   (iPeak_A3 > aKICK[4]) {
						aKICK[4] = iPeak_A3;
					}
				}

				aKICK[5]   = aKICK[4];
				aKICK[4] = map(aKICK[4], aKICK[0], aKICK[1], 0, 127);
				aKICK[4]   = (aKICK[4] * aKICK[4]) / 127;
				if (aKICK[4] <= 1) {
					aKICK[4]   = 1;
				}
				if (aKICK[4] > 127) {
					aKICK[4] = 127;
				}
				MIDI.sendNoteOn(aKICK[2],   aKICK[4], 1);
				MIDI.sendNoteOn(aKICK[2], 0, 1);
				lcd.clear();
				lcd.print("KICK");
				lcd.setCursor(0,   1);
				lcd.print(aKICK[4]);
				bKickFlag = true;
			}

//   --- BEGIN 'Code in Progress' --- //
// --- I could be wrong, but this is what   it appears to be --- and out of curiousity what is purpose of this sequence? --   //

			// I=(A0);  // Previous Code
			// -- DOES iSensorValue_A0   need to be declared as an integer?  How does this relate to iPiezoValue_A0?  --   //
			if (iSensorValue_A0 < (aSNARE[5] * (0.01 * aSNARE[3]))) {
				bSnareFlag   = false;
			}
			if (iPiezoValue_A0 <= aHIHAT_PEDAL[0] && iPiezoValue_A2   < (aHIHAT[5] * (0.01 * aHIHAT[3])) && bHihatFlag == true) {
				delay(aSETTING[3]);
				//   iSensorValue_A1 is reading analogRead(A2), but this is aHIHAT_PEDAL (which is analogRead(A2)
				int   iSensorValue_A1 = analogRead(A2);
				if (iSensorValue_A1 < (aHIHAT[5] *   (0.01 * aHIHAT[3]))) {
					bHihatFlag = false;
				}
			}
			if   (iPiezoValue_A0 >= aHIHAT_PEDAL[0] && iPiezoValue_A2 < (aHIHAT[5] *(0.01 * aHIHAT[3]))   && bHihatFlag == true) {
				delay(aSETTING[3]);
				int iSensorValue_A2   = analogRead(A2);
				if (iSensorValue_A2 < (aHIHAT[5] * (0.01 * aHIHAT[3])))   {
					bHihatFlag = false;
				}
			}
			if (iPiezoValue_A3   < (aKICK[5] * (0.01 * aKICK[3])) && bKickFlag == true) {
				delay(aSETTING[3]);
				//   -- Should declared iSensorValue_A3 be iPiezoValue_A3?  iSensorValue_A3 is declared   but not used anywhere??
				int iSensorValue_A3 = analogRead(A3);
				if   (iPiezoValue_A3 < (aKICK[5] * (0.01 * aKICK[3]))) {
				bKickFlag = false;
				}
			}
			if   (iPiezoValue_A0 <= aHIHAT_PEDAL[0] && bPedalFlag == true) {
				bPedalFlag   = false;
			}

// --- END 'Code in Progress' --- //
		}

Hello Drum v2

arduino

Modified: 05/12/2019 by George Brotherston

1/*
2	Drum MIDI Controller
3	Created:  28/06/2017 by Ryo Kosaka as  " HELLO DRUM " Ver.1.0
4	Modified: 05/12/2019 by George Brotherston
5*/
6
7//  Library Includes
8
9//	#include <Arduino.h>		// Arduino Library (automatically  included)
10		// LOW (Line 41)
11		// HIGH (Line 40)
12		// INPUT_PULLUP  (Line 47)
13		// digitalRead() (Line 177)
14		// analogRead() (Line 178)
15	#include  <MIDI.h>           // MIDI Library		- Version: 4.3.1
16		// includes <midi_Namespace.h>
17			//  class MIDI (Line 30)
18		// class method 'begin' (Line 55)
19	#include <LiquidCrystal.h>  // LiquidCrystal	- Version: 1.0.7
20		// lcd object instantiatied (in Variables  section below) from LiquidCrystal class (Line 45)
21
22//	Variables - Declare  and Initialize
23
24	// Variables - Program
25		boolean	bSnareFlag			=  false;
26		boolean	bHihatFlag			= false;
27		boolean	bKickFlag			=  false;
28		boolean	bPedalFlag			= false;
29		boolean	bButtonState		=  true;
30		boolean	bButtonState_set	= true;
31		int		iUPDOWN				= 0;
32		int		iNEXTBACK			=  0;
33
34	//	Arrays - Program
35		// InstrumentSensor[6] = {threshold, sensitivity,  note, flag, velocity, iPeakValue}
36		// 'iPeakValue' and 'velocity' must be  zero for all InstrumentSensor arrays
37		// All 'aHIHAT[]' and 'aHIHAT_CLOSE[]'  array elements should have the same value except for 'note' element.
38			int		aSNARE[6]		=  {150, 950, 38, 3, 0, 0};
39			int		aSNARE_RIM[6]	= {5, 500, 37, 3 , 0, 0};
40			int		aHIHAT[6]		=  {100, 800, 46, 1, 0, 0};     
41			int		aHIHAT_CLOSE[6]	= {100, 800, 42,  1, 0, 0};
42			int		aKICK[6]		= {200, 700, 36, 1, 0, 0};
43		// Instrument_ContinuousController[4]  = {scantime, snare/rim, pedalVelocity , masktime}
44			int		aHIHAT_PEDAL[4]	=  {600, 0, 44, 0};
45		// InstrumentSensor_ParameterValue[4] = {threshold, sensitivity,  note, flag}
46			int		aSETTING[4]		= {4, 500 ,100 ,1};
47
48	//	Libraries
49		//	LiquidCrystal.h
50			//	Constants  (already defined in Library, still in scope?  If not then define below)
51				//	const  int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
52			//	lcd object instantiatiated  from LiquidCrystal class (LiquidCrystal.h Line 45)
53				LiquidCrystal lcd(rs,  en, d4, d5, d6, d7);	//	Associate LCD interface pins to associated Arduino pin  number
54		// MIDI.h
55			//	Initialize the library
56				MIDI_CREATE_DEFAULT_INSTANCE();
57
58//  Program Code
59
60	// Program Execution - Initial (program setup)
61
62		void  setup() {
63			MIDI.begin(10);						// begin (MIDI.h Line 55)
64			lcd.begin(16,  2);					// begin (LiquidCrystal.h Line 62)
65			lcd.print("INITIALIZING...");		//  print (LiquidCrystal.h Line 45)
66			lcd.setCursor(0, 1);				// setCursor  (LiquidCrystal.h Line 82)
67			lcd.print("DRUM MIDI CONTROLLER");
68			pinMode(6,  INPUT_PULLUP);			// pinMode (Arduino.h Line 175); INPUT_PULLUP (Arduino.h Line  47)
69			pinMode(7, INPUT_PULLUP);
70			pinMode(8, INPUT_PULLUP);
71			pinMode(9,  INPUT_PULLUP);
72			pinMode(10, INPUT_PULLUP);
73		}
74
75	// Program  Execution - Steadystate (continuous loop until power is lost)
76
77		void loop()  {
78		// Drum MIDI Controller Circuit
79		// Declare and Initialize Variables
80
81			int		iButton_set		=  digitalRead(6);	// Set Button			// digitalRead() (Arduino.h Line 177)
82			int		iButton_up		=  digitalRead(7);	// Up Button
83			int		iButton_down	= digitalRead(8);	//  Down Button
84			int		iButton_next	= digitalRead(9);	// Next Button
85			int		iButton_back	=  digitalRead(10);	// Back Button
86			int		iPiezoValue_A0	= analogRead(A0);   // Piezo - Snare Head	// analogRead() (Arduino.h Line 178)
87			int		iPiezoValue_A1	=  analogRead(A1);   // Piezo - Snare Rim
88			int		iPiezoValue_A2	= analogRead(A2);   // Hi-hat
89			int		iPiezoValue_A3	= analogRead(A3);   // Kick Drum
90			int		iFSRValue_A4	=  analogRead(A4);   // Hi-hat Pedal
91	
92		// Edit Mode
93
94			int		aUP[4]			=  {5, 50, 1,1};		// {threshold, sensitivity, note, flag}
95			int		aUP_ADVANCE[4]	=  {1, 50, 1,1};		// {scantime, rim/head, pedal velocity, masktime}
96
97			//  Note: aINSTRUMENT[] array was not declared in 'Arrays' above
98			char* aINSTRUMENT[]  = {
99				"SNARE HEAD",  "SNARE RIM", "HIHAT OPEN", "HIHAT CLOSE",  "HIHAT PEDAL", "KICK", "ADVANCED SETTING"
100			};
101
102			// Note:  aSETTING[] array WAS declared in 'Arrays' above
103			char* aSETTING[] = {
104				"THRESHOLD",  "SENSITIVITY", "NOTE", "FLAG"
105			};
106
107			// Note: aSETTING_ADVANCE[]  was not declared in 'Arrays' above
108			char* aSETTING_ADVANCE[] = {
109				"SCAN  TIME", "HEAD / RIM ","PEDAL VELO", "MASK TIME"
110			};
111
112			if  (iUPDOWN < 0) {
113				iUPDOWN = 6;
114			}
115
116			if (iUPDOWN > 6)  {
117				iUPDOWN = 0;
118			}
119
120			if (iNEXTBACK < 0) {
121				iNEXTBACK  = 3;
122			}
123
124			if (iNEXTBACK > 3) {
125				iNEXTBACK = 0;
126			}
127
128		//  Pushbutton EDIT
129			// LOW (Arduino.h Line 41)
130			if (iButton_set ==  LOW && bButtonState == true && bButtonState_set == true) {
131				lcd.clear();
132				lcd.print("EDIT");
133				bButtonState		=  false;
134				bButtonState_set	= false;
135				delay(500);
136			}
137
138			if  (iButton_set == LOW && bButtonState == true && bButtonState_set == false) {
139				lcd.clear();
140            	lcd.print("EDIT DONE");
141            	bButtonState		= false;
142            	bButtonState_set	= true;
143            	delay(500);
144			}
145
146			if  (iButton_up == LOW && bButtonState == true && bButtonState_set == false) {
147				switch  (iUPDOWN) {
148					case 0:
149					aSNARE[iNEXTBACK] = aSNARE[iNEXTBACK]  + aUP[iNEXTBACK];
150					break;
151
152					case 1:
153					aSNARE_RIM[iNEXTBACK]  = aSNARE_RIM[iNEXTBACK] + aUP[iNEXTBACK];
154					break;
155
156					case  2:
157					switch (iNEXTBACK) {
158						case 2:
159						aHIHAT[iNEXTBACK]  = aHIHAT[iNEXTBACK] + aUP[iNEXTBACK];
160						break;
161
162						default:
163						aHIHAT_CLOSE[iNEXTBACK]  = aHIHAT_CLOSE[iNEXTBACK] + aUP[iNEXTBACK];
164						aHIHAT[iNEXTBACK] = aHIHAT[iNEXTBACK]  + aUP[iNEXTBACK];
165					}
166					break;
167
168					case 3:
169					switch  (iNEXTBACK) {
170						case 2:
171						aHIHAT_CLOSE[iNEXTBACK] = aHIHAT_CLOSE[iNEXTBACK]  + aUP[iNEXTBACK];
172						break;
173						
174						default:
175						aHIHAT_CLOSE[iNEXTBACK]  = aHIHAT_CLOSE[iNEXTBACK] + aUP[iNEXTBACK];
176						aHIHAT[iNEXTBACK] = aHIHAT[iNEXTBACK]  + aUP[iNEXTBACK];
177					}
178					break;
179
180					case 4:
181					switch  (iNEXTBACK) {
182						case 0:
183						aHIHAT_PEDAL[iNEXTBACK] = aHIHAT_PEDAL[iNEXTBACK]  + aUP[iNEXTBACK];
184						break;
185						
186						case 2:
187						aHIHAT_PEDAL[iNEXTBACK]  = aHIHAT_PEDAL[iNEXTBACK] + aUP[iNEXTBACK];
188						break;
189					}
190					break;
191
192					case  5:
193					aKICK[iNEXTBACK] = aKICK[iNEXTBACK] + aUP[iNEXTBACK];
194					break;
195
196					case  6:
197					aSETTING[iNEXTBACK] = aSETTING[iNEXTBACK] + aUP_ADVANCE[iNEXTBACK];
198					break;
199				}
200				bButtonState  = false;
201				delay(30);
202			}
203
204			if (iButton_down == LOW &&  bButtonState == true && bButtonState_set == false) {
205
206				switch (iUPDOWN)  {
207					case 0:
208					aSNARE[iNEXTBACK] = aSNARE[iNEXTBACK] - aUP[iNEXTBACK];
209					break;
210
211					case  1:
212					aSNARE_RIM[iNEXTBACK] = aSNARE_RIM[iNEXTBACK] - aUP[iNEXTBACK];
213					break;
214
215					case  2:
216					switch (iNEXTBACK) {
217						case 2:
218						aHIHAT[iNEXTBACK]  = aHIHAT[iNEXTBACK] - aUP[iNEXTBACK];
219						break;
220
221						default:
222						aHIHAT_CLOSE[iNEXTBACK]  = aHIHAT_CLOSE[iNEXTBACK] - aUP[iNEXTBACK];
223						aHIHAT[iNEXTBACK] = aHIHAT[iNEXTBACK]  - aUP[iNEXTBACK];
224					}
225					break;
226
227					case 3:
228					switch  (iNEXTBACK) {
229						case 2:
230						aHIHAT_CLOSE[iNEXTBACK] = aHIHAT_CLOSE[iNEXTBACK]  - aUP[iNEXTBACK];
231						break;
232
233						default:
234						aHIHAT_CLOSE[iNEXTBACK]  = aHIHAT_CLOSE[iNEXTBACK] - aUP[iNEXTBACK];
235						aHIHAT[iNEXTBACK] = aHIHAT[iNEXTBACK]  - aUP[iNEXTBACK];
236					}
237					break;
238
239					case 4:
240					switch  (iNEXTBACK) {
241						case 0:
242						aHIHAT_PEDAL[iNEXTBACK] = aHIHAT_PEDAL[iNEXTBACK]  - aUP[iNEXTBACK];
243						break;
244
245						case 2:
246						aHIHAT_PEDAL[iNEXTBACK]  = aHIHAT_PEDAL[iNEXTBACK] - aUP[iNEXTBACK];
247						break;
248					}
249					break;
250
251					case  5:
252					aKICK[iNEXTBACK] = aKICK[iNEXTBACK] - aUP[iNEXTBACK];
253					break;
254
255					case  6:
256					aSETTING[iNEXTBACK] = aSETTING[iNEXTBACK] - aUP_ADVANCE[iNEXTBACK];
257					break;
258				}
259				bButtonState  = false;
260				delay(30);
261			}
262
263		// Pushbuttons UP; DOWN; NEXT;  BACK
264			if (iButton_up == LOW && bButtonState == true && bButtonState_set  == true) {
265				iUPDOWN = ++iUPDOWN;
266				bButtonState = false;
267				delay(30);
268			}
269
270			if  (iButton_down == LOW && bButtonState == true && bButtonState_set == true) {
271				iUPDOWN  = --iUPDOWN;
272				bButtonState = false;
273				delay(30);
274			}
275
276			if  (iButton_next == LOW && bButtonState == true && bButtonState_set == true) {
277				iNEXTBACK  = ++iNEXTBACK;
278				bButtonState = false;
279				delay(30);
280			}
281
282			if  (iButton_back == LOW && bButtonState == true && bButtonState_set == true) {
283				iNEXTBACK  = --iNEXTBACK;
284				bButtonState = false;
285				delay(30);
286			}
287
288			if  (bButtonState == false && iButton_up == HIGH && iButton_down == HIGH && iButton_next  == HIGH && iButton_back == HIGH && iButton_set == HIGH) {
289				// HIGH is  defined in Arduino.h Line 40
290
291				switch (iUPDOWN) {
292
293					case  0:
294					lcd.clear();
295					lcd.print(aINSTRUMENT[iUPDOWN]);
296					lcd.setCursor(0,  1);
297					lcd.print(aSETTING[iNEXTBACK]);
298					lcd.setCursor(12,  1);
299					lcd.print(aSNARE[iNEXTBACK]);
300					break;
301
302					case  1:
303					lcd.clear();
304					lcd.print(aINSTRUMENT[iUPDOWN]);
305					lcd.setCursor(0,  1);
306					lcd.print(aSETTING[iNEXTBACK]);
307					lcd.setCursor(12,  1);
308					lcd.print(aSNARE_RIM[iNEXTBACK]);
309					break;
310
311					case  2:
312					lcd.clear();
313					lcd.print(aINSTRUMENT[iUPDOWN]);
314					lcd.setCursor(0,  1);
315					lcd.print(aSETTING[iNEXTBACK]);
316					lcd.setCursor(12,  1);
317					lcd.print(aHIHAT[iNEXTBACK]);
318					break;
319
320					case  3:
321					lcd.clear();lcd.print(aINSTRUMENT[iUPDOWN]);
322					lcd.setCursor(0,  1);
323					lcd.print(aSETTING[iNEXTBACK]);
324					lcd.setCursor(12,  1);
325					lcd.print(aHIHAT_CLOSE[iNEXTBACK]);
326					break;
327
328					case  4:
329					lcd.clear();
330					lcd.print(aINSTRUMENT[iUPDOWN]);
331					lcd.setCursor(0,  1);
332					lcd.print(aSETTING[iNEXTBACK]);
333					lcd.setCursor(12,  1);
334					lcd.print(aHIHAT_PEDAL[iNEXTBACK]);
335					break;
336
337					case  5:
338					lcd.clear();
339					lcd.print(aINSTRUMENT[iUPDOWN]);
340					lcd.setCursor(0,  1);
341					lcd.print(aSETTING[iNEXTBACK]);
342					lcd.setCursor(12,  1);
343					lcd.print(aKICK[iNEXTBACK]);
344					break;
345
346					case  6:
347					lcd.clear();
348					lcd.print(aINSTRUMENT[iUPDOWN]);
349					lcd.setCursor(0,  1);
350					lcd.print(aSETTING_ADVANCE[iNEXTBACK]);
351					lcd.setCursor(12,  1);
352					lcd.print(aSETTING[iNEXTBACK]);
353					break;
354				}
355
356				bButtonState  = true;
357			}
358
359		// Instrument Sensors
360
361			// Snare Drum
362			if  (iPiezoValue_A0 > aSNARE[0] && bSnareFlag == false) {
363
364				for (int i  = 0; i < aSETTING[0]; i++) {
365					int iPeak_A0 = analogRead(A0);
366					int  iPeak_A1 = analogRead(A1);
367					delay(1);
368					if (iPeak_A0 > aSNARE[4])  {
369						aSNARE[4] = iPeak_A0;
370					}
371					if (iPeak_A1  > aSNARE_RIM[4]) {
372						aSNARE_RIM[4] = iPeak_A1;
373					}
374				}
375				aSNARE[5]  = aSNARE[4];
376				aSNARE_RIM[5] = aSNARE_RIM[4];
377				aSNARE[4] = map(aSNARE[4],  aSNARE[0], aSNARE[1], 0, 127);
378				aSNARE_RIM[4] = map(aSNARE_RIM[4], aSNARE_RIM[0],  aSNARE_RIM[1], 0, 127);
379				aSNARE[4] = (aSNARE[4] *  aSNARE[4]) / 127; //  Curve setting
380
381			//aSNARE_RIM[4] = (aSNARE_RIM[4] * aSNARE_RIM[4]) / 127;
382				if  (aSNARE[4] <= 1) {
383					aSNARE[4] = 1;
384				}
385				if (aSNARE[4]  > 127) {
386					aSNARE[4] = 127;
387				}
388				if (aSNARE_RIM[4]  <= 0) {
389					aSNARE_RIM[4] = 0;
390				}
391				if (aSNARE_RIM[4]  > 127) {
392					aSNARE_RIM[4] = 127;
393				}
394				if (aSNARE_RIM[5]  > aSETTING[1]) {
395					MIDI.sendNoteOn(aSNARE_RIM[2], aSNARE_RIM[4], 1);   //(note, velocity, channel)
396					MIDI.sendNoteOn(aSNARE_RIM[2], 0, 1);
397					lcd.clear();
398					lcd.print("SNARE  RIM");
399					lcd.setCursor(0, 1);
400					lcd.print(aSNARE_RIM[4]);
401					bSnareFlag  = true;
402				}
403
404			//else if (aSNARE[5] > aSNARE_RIM[5])
405				else  {
406					MIDI.sendNoteOn(aSNARE[2], aSNARE[4], 1);   //(note, velocity, channel)
407					MIDI.sendNoteOn(aSNARE[2],  0, 1);
408					lcd.clear();
409					lcd.print("SNARE HEAD");
410					lcd.setCursor(0,  1);
411					lcd.print(aSNARE[4]);
412				//lcd.setCursor(10, 1);
413				//lcd.print(aSNARE_RIM[5]);
414					bSnareFlag  = true;
415				}
416			}
417
418		// Hi-Hat Cymbal
419			if (iPiezoValue_A2  > aHIHAT[0] && bHihatFlag == false) {
420				for (int i = 0; i < aSETTING[0];  i++) {
421					int iPeak_A2 = analogRead(A2);
422					delay(1);
423					if  (iPeak_A2 > aHIHAT[4]) {
424						aHIHAT[4] = iPeak_A2;
425					}
426				}
427				aHIHAT[5]  = aHIHAT[4];
428				aHIHAT[4] = map(aHIHAT[4], aHIHAT[0], aHIHAT[1], 0, 127);
429				aHIHAT[4]  = (aHIHAT[4] * aHIHAT[4]) / 127;
430				if (aHIHAT[4] <= 1) {
431					aHIHAT[4]  = 1;
432				}
433				if (aHIHAT[4] > 127) {
434					aHIHAT[4] = 127;
435				}
436				if  (iPiezoValue_A0 < aHIHAT_PEDAL[0]) {
437					MIDI.sendNoteOn(aHIHAT[2], aHIHAT[4],  1);
438					MIDI.sendNoteOn(aHIHAT[2], 0, 1);
439					lcd.clear();
440					lcd.print("HIHAT  OPEN");
441					lcd.setCursor(0, 1);
442					lcd.print(aHIHAT[4]);
443					bHihatFlag  = true;
444				}
445				else if (iPiezoValue_A0 >= aHIHAT_PEDAL[0]) {
446					MIDI.sendNoteOn(aHIHAT_CLOSE[2],  aHIHAT[4], 1);
447					MIDI.sendNoteOn(aHIHAT_CLOSE[2], 0, 1);
448					lcd.clear();
449					lcd.print("HIHAT  CLOSE");
450					lcd.setCursor(0, 1);
451					lcd.print(aHIHAT[4]);
452					bHihatFlag  = true;
453				}
454			}
455
456		// Hi-hat Pedal
457			if (iPiezoValue_A0  > aHIHAT_PEDAL[0] && bPedalFlag == false) {
458				MIDI.sendNoteOn(aHIHAT_PEDAL[2],  aSETTING[2], 1);  // (note, velocity, channel)
459				MIDI.sendNoteOn(aHIHAT_PEDAL[2],  0, 1);
460				lcd.clear();
461				lcd.print("HIHAT PEDAL");
462				lcd.setCursor(0,  1);
463				lcd.print(aSETTING[2]);
464				bPedalFlag = true;
465			}
466
467		//  Kick Drum
468			if (iPiezoValue_A3 > aKICK[0] && bKickFlag == false) {
469				for  (int i = 0; i < aSETTING[0]; i++) {
470					int iPeak_A3 = analogRead(A3);
471					delay(1);
472					if  (iPeak_A3 > aKICK[4]) {
473						aKICK[4] = iPeak_A3;
474					}
475				}
476
477				aKICK[5]  = aKICK[4];
478				aKICK[4] = map(aKICK[4], aKICK[0], aKICK[1], 0, 127);
479				aKICK[4]  = (aKICK[4] * aKICK[4]) / 127;
480				if (aKICK[4] <= 1) {
481					aKICK[4]  = 1;
482				}
483				if (aKICK[4] > 127) {
484					aKICK[4] = 127;
485				}
486				MIDI.sendNoteOn(aKICK[2],  aKICK[4], 1);
487				MIDI.sendNoteOn(aKICK[2], 0, 1);
488				lcd.clear();
489				lcd.print("KICK");
490				lcd.setCursor(0,  1);
491				lcd.print(aKICK[4]);
492				bKickFlag = true;
493			}
494
495//  --- BEGIN 'Code in Progress' --- //
496// --- I could be wrong, but this is what  it appears to be --- and out of curiousity what is purpose of this sequence? --  //
497
498			// I=(A0);  // Previous Code
499			// -- DOES iSensorValue_A0  need to be declared as an integer?  How does this relate to iPiezoValue_A0?  --  //
500			if (iSensorValue_A0 < (aSNARE[5] * (0.01 * aSNARE[3]))) {
501				bSnareFlag  = false;
502			}
503			if (iPiezoValue_A0 <= aHIHAT_PEDAL[0] && iPiezoValue_A2  < (aHIHAT[5] * (0.01 * aHIHAT[3])) && bHihatFlag == true) {
504				delay(aSETTING[3]);
505				//  iSensorValue_A1 is reading analogRead(A2), but this is aHIHAT_PEDAL (which is analogRead(A2)
506				int  iSensorValue_A1 = analogRead(A2);
507				if (iSensorValue_A1 < (aHIHAT[5] *  (0.01 * aHIHAT[3]))) {
508					bHihatFlag = false;
509				}
510			}
511			if  (iPiezoValue_A0 >= aHIHAT_PEDAL[0] && iPiezoValue_A2 < (aHIHAT[5] *(0.01 * aHIHAT[3]))  && bHihatFlag == true) {
512				delay(aSETTING[3]);
513				int iSensorValue_A2  = analogRead(A2);
514				if (iSensorValue_A2 < (aHIHAT[5] * (0.01 * aHIHAT[3])))  {
515					bHihatFlag = false;
516				}
517			}
518			if (iPiezoValue_A3  < (aKICK[5] * (0.01 * aKICK[3])) && bKickFlag == true) {
519				delay(aSETTING[3]);
520				//  -- Should declared iSensorValue_A3 be iPiezoValue_A3?  iSensorValue_A3 is declared  but not used anywhere??
521				int iSensorValue_A3 = analogRead(A3);
522				if  (iPiezoValue_A3 < (aKICK[5] * (0.01 * aKICK[3]))) {
523				bKickFlag = false;
524				}
525			}
526			if  (iPiezoValue_A0 <= aHIHAT_PEDAL[0] && bPedalFlag == true) {
527				bPedalFlag  = false;
528			}
529
530// --- END 'Code in Progress' --- //
531		}

/*
	Drum MIDI Controller
	Created:  28/06/2017 by Ryo Kosaka as  " HELLO DRUM " Ver.1.0
	Modified: 05/12/2019 by George Brotherston
*/

//  Library Includes

//	#include <Arduino.h>		// Arduino Library (automatically  included)
		// LOW (Line 41)
		// HIGH (Line 40)
		// INPUT_PULLUP  (Line 47)
		// digitalRead() (Line 177)
		// analogRead() (Line 178)
	#include  <MIDI.h>           // MIDI Library		- Version: 4.3.1
		// includes <midi_Namespace.h>
			//  class MIDI (Line 30)
		// class method 'begin' (Line 55)
	#include <LiquidCrystal.h>  // LiquidCrystal	- Version: 1.0.7
		// lcd object instantiatied (in Variables  section below) from LiquidCrystal class (Line 45)

//	Variables - Declare  and Initialize

	// Variables - Program
		boolean	bSnareFlag			=  false;
		boolean	bHihatFlag			= false;
		boolean	bKickFlag			=  false;
		boolean	bPedalFlag			= false;
		boolean	bButtonState		=  true;
		boolean	bButtonState_set	= true;
		int		iUPDOWN				= 0;
		int		iNEXTBACK			=  0;

	//	Arrays - Program
		// InstrumentSensor[6] = {threshold, sensitivity,  note, flag, velocity, iPeakValue}
		// 'iPeakValue' and 'velocity' must be  zero for all InstrumentSensor arrays
		// All 'aHIHAT[]' and 'aHIHAT_CLOSE[]'  array elements should have the same value except for 'note' element.
			int		aSNARE[6]		=  {150, 950, 38, 3, 0, 0};
			int		aSNARE_RIM[6]	= {5, 500, 37, 3 , 0, 0};
			int		aHIHAT[6]		=  {100, 800, 46, 1, 0, 0};     
			int		aHIHAT_CLOSE[6]	= {100, 800, 42,  1, 0, 0};
			int		aKICK[6]		= {200, 700, 36, 1, 0, 0};
		// Instrument_ContinuousController[4]  = {scantime, snare/rim, pedalVelocity , masktime}
			int		aHIHAT_PEDAL[4]	=  {600, 0, 44, 0};
		// InstrumentSensor_ParameterValue[4] = {threshold, sensitivity,  note, flag}
			int		aSETTING[4]		= {4, 500 ,100 ,1};

	//	Libraries
		//	LiquidCrystal.h
			//	Constants  (already defined in Library, still in scope?  If not then define below)
				//	const  int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
			//	lcd object instantiatiated  from LiquidCrystal class (LiquidCrystal.h Line 45)
				LiquidCrystal lcd(rs,  en, d4, d5, d6, d7);	//	Associate LCD interface pins to associated Arduino pin  number
		// MIDI.h
			//	Initialize the library
				MIDI_CREATE_DEFAULT_INSTANCE();

//  Program Code

	// Program Execution - Initial (program setup)

		void  setup() {
			MIDI.begin(10);						// begin (MIDI.h Line 55)
			lcd.begin(16,  2);					// begin (LiquidCrystal.h Line 62)
			lcd.print("INITIALIZING...");		//  print (LiquidCrystal.h Line 45)
			lcd.setCursor(0, 1);				// setCursor  (LiquidCrystal.h Line 82)
			lcd.print("DRUM MIDI CONTROLLER");
			pinMode(6,  INPUT_PULLUP);			// pinMode (Arduino.h Line 175); INPUT_PULLUP (Arduino.h Line  47)
			pinMode(7, INPUT_PULLUP);
			pinMode(8, INPUT_PULLUP);
			pinMode(9,  INPUT_PULLUP);
			pinMode(10, INPUT_PULLUP);
		}

	// Program  Execution - Steadystate (continuous loop until power is lost)

		void loop()  {
		// Drum MIDI Controller Circuit
		// Declare and Initialize Variables

			int		iButton_set		=  digitalRead(6);	// Set Button			// digitalRead() (Arduino.h Line 177)
			int		iButton_up		=  digitalRead(7);	// Up Button
			int		iButton_down	= digitalRead(8);	//  Down Button
			int		iButton_next	= digitalRead(9);	// Next Button
			int		iButton_back	=  digitalRead(10);	// Back Button
			int		iPiezoValue_A0	= analogRead(A0);   // Piezo - Snare Head	// analogRead() (Arduino.h Line 178)
			int		iPiezoValue_A1	=  analogRead(A1);   // Piezo - Snare Rim
			int		iPiezoValue_A2	= analogRead(A2);   // Hi-hat
			int		iPiezoValue_A3	= analogRead(A3);   // Kick Drum
			int		iFSRValue_A4	=  analogRead(A4);   // Hi-hat Pedal
	
		// Edit Mode

			int		aUP[4]			=  {5, 50, 1,1};		// {threshold, sensitivity, note, flag}
			int		aUP_ADVANCE[4]	=  {1, 50, 1,1};		// {scantime, rim/head, pedal velocity, masktime}

			//  Note: aINSTRUMENT[] array was not declared in 'Arrays' above
			char* aINSTRUMENT[]  = {
				"SNARE HEAD",  "SNARE RIM", "HIHAT OPEN", "HIHAT CLOSE",  "HIHAT PEDAL", "KICK", "ADVANCED SETTING"
			};

			// Note:  aSETTING[] array WAS declared in 'Arrays' above
			char* aSETTING[] = {
				"THRESHOLD",  "SENSITIVITY", "NOTE", "FLAG"
			};

			// Note: aSETTING_ADVANCE[]  was not declared in 'Arrays' above
			char* aSETTING_ADVANCE[] = {
				"SCAN  TIME", "HEAD / RIM ","PEDAL VELO", "MASK TIME"
			};

			if  (iUPDOWN < 0) {
				iUPDOWN = 6;
			}

			if (iUPDOWN > 6)  {
				iUPDOWN = 0;
			}

			if (iNEXTBACK < 0) {
				iNEXTBACK  = 3;
			}

			if (iNEXTBACK > 3) {
				iNEXTBACK = 0;
			}

		//  Pushbutton EDIT
			// LOW (Arduino.h Line 41)
			if (iButton_set ==  LOW && bButtonState == true && bButtonState_set == true) {
				lcd.clear();
				lcd.print("EDIT");
				bButtonState		=  false;
				bButtonState_set	= false;
				delay(500);
			}

			if  (iButton_set == LOW && bButtonState == true && bButtonState_set == false) {
				lcd.clear();
            	lcd.print("EDIT DONE");
            	bButtonState		= false;
            	bButtonState_set	= true;
            	delay(500);
			}

			if  (iButton_up == LOW && bButtonState == true && bButtonState_set == false) {
				switch  (iUPDOWN) {
					case 0:
					aSNARE[iNEXTBACK] = aSNARE[iNEXTBACK]  + aUP[iNEXTBACK];
					break;

					case 1:
					aSNARE_RIM[iNEXTBACK]  = aSNARE_RIM[iNEXTBACK] + aUP[iNEXTBACK];
					break;

					case  2:
					switch (iNEXTBACK) {
						case 2:
						aHIHAT[iNEXTBACK]  = aHIHAT[iNEXTBACK] + aUP[iNEXTBACK];
						break;

						default:
						aHIHAT_CLOSE[iNEXTBACK]  = aHIHAT_CLOSE[iNEXTBACK] + aUP[iNEXTBACK];
						aHIHAT[iNEXTBACK] = aHIHAT[iNEXTBACK]  + aUP[iNEXTBACK];
					}
					break;

					case 3:
					switch  (iNEXTBACK) {
						case 2:
						aHIHAT_CLOSE[iNEXTBACK] = aHIHAT_CLOSE[iNEXTBACK]  + aUP[iNEXTBACK];
						break;
						
						default:
						aHIHAT_CLOSE[iNEXTBACK]  = aHIHAT_CLOSE[iNEXTBACK] + aUP[iNEXTBACK];
						aHIHAT[iNEXTBACK] = aHIHAT[iNEXTBACK]  + aUP[iNEXTBACK];
					}
					break;

					case 4:
					switch  (iNEXTBACK) {
						case 0:
						aHIHAT_PEDAL[iNEXTBACK] = aHIHAT_PEDAL[iNEXTBACK]  + aUP[iNEXTBACK];
						break;
						
						case 2:
						aHIHAT_PEDAL[iNEXTBACK]  = aHIHAT_PEDAL[iNEXTBACK] + aUP[iNEXTBACK];
						break;
					}
					break;

					case  5:
					aKICK[iNEXTBACK] = aKICK[iNEXTBACK] + aUP[iNEXTBACK];
					break;

					case  6:
					aSETTING[iNEXTBACK] = aSETTING[iNEXTBACK] + aUP_ADVANCE[iNEXTBACK];
					break;
				}
				bButtonState  = false;
				delay(30);
			}

			if (iButton_down == LOW &&  bButtonState == true && bButtonState_set == false) {

				switch (iUPDOWN)  {
					case 0:
					aSNARE[iNEXTBACK] = aSNARE[iNEXTBACK] - aUP[iNEXTBACK];
					break;

					case  1:
					aSNARE_RIM[iNEXTBACK] = aSNARE_RIM[iNEXTBACK] - aUP[iNEXTBACK];
					break;

					case  2:
					switch (iNEXTBACK) {
						case 2:
						aHIHAT[iNEXTBACK]  = aHIHAT[iNEXTBACK] - aUP[iNEXTBACK];
						break;

						default:
						aHIHAT_CLOSE[iNEXTBACK]  = aHIHAT_CLOSE[iNEXTBACK] - aUP[iNEXTBACK];
						aHIHAT[iNEXTBACK] = aHIHAT[iNEXTBACK]  - aUP[iNEXTBACK];
					}
					break;

					case 3:
					switch  (iNEXTBACK) {
						case 2:
						aHIHAT_CLOSE[iNEXTBACK] = aHIHAT_CLOSE[iNEXTBACK]  - aUP[iNEXTBACK];
						break;

						default:
						aHIHAT_CLOSE[iNEXTBACK]  = aHIHAT_CLOSE[iNEXTBACK] - aUP[iNEXTBACK];
						aHIHAT[iNEXTBACK] = aHIHAT[iNEXTBACK]  - aUP[iNEXTBACK];
					}
					break;

					case 4:
					switch  (iNEXTBACK) {
						case 0:
						aHIHAT_PEDAL[iNEXTBACK] = aHIHAT_PEDAL[iNEXTBACK]  - aUP[iNEXTBACK];
						break;

						case 2:
						aHIHAT_PEDAL[iNEXTBACK]  = aHIHAT_PEDAL[iNEXTBACK] - aUP[iNEXTBACK];
						break;
					}
					break;

					case  5:
					aKICK[iNEXTBACK] = aKICK[iNEXTBACK] - aUP[iNEXTBACK];
					break;

					case  6:
					aSETTING[iNEXTBACK] = aSETTING[iNEXTBACK] - aUP_ADVANCE[iNEXTBACK];
					break;
				}
				bButtonState  = false;
				delay(30);
			}

		// Pushbuttons UP; DOWN; NEXT;  BACK
			if (iButton_up == LOW && bButtonState == true && bButtonState_set  == true) {
				iUPDOWN = ++iUPDOWN;
				bButtonState = false;
				delay(30);
			}

			if  (iButton_down == LOW && bButtonState == true && bButtonState_set == true) {
				iUPDOWN  = --iUPDOWN;
				bButtonState = false;
				delay(30);
			}

			if  (iButton_next == LOW && bButtonState == true && bButtonState_set == true) {
				iNEXTBACK  = ++iNEXTBACK;
				bButtonState = false;
				delay(30);
			}

			if  (iButton_back == LOW && bButtonState == true && bButtonState_set == true) {
				iNEXTBACK  = --iNEXTBACK;
				bButtonState = false;
				delay(30);
			}

			if  (bButtonState == false && iButton_up == HIGH && iButton_down == HIGH && iButton_next  == HIGH && iButton_back == HIGH && iButton_set == HIGH) {
				// HIGH is  defined in Arduino.h Line 40

				switch (iUPDOWN) {

					case  0:
					lcd.clear();
					lcd.print(aINSTRUMENT[iUPDOWN]);
					lcd.setCursor(0,  1);
					lcd.print(aSETTING[iNEXTBACK]);
					lcd.setCursor(12,  1);
					lcd.print(aSNARE[iNEXTBACK]);
					break;

					case  1:
					lcd.clear();
					lcd.print(aINSTRUMENT[iUPDOWN]);
					lcd.setCursor(0,  1);
					lcd.print(aSETTING[iNEXTBACK]);
					lcd.setCursor(12,  1);
					lcd.print(aSNARE_RIM[iNEXTBACK]);
					break;

					case  2:
					lcd.clear();
					lcd.print(aINSTRUMENT[iUPDOWN]);
					lcd.setCursor(0,  1);
					lcd.print(aSETTING[iNEXTBACK]);
					lcd.setCursor(12,  1);
					lcd.print(aHIHAT[iNEXTBACK]);
					break;

					case  3:
					lcd.clear();lcd.print(aINSTRUMENT[iUPDOWN]);
					lcd.setCursor(0,  1);
					lcd.print(aSETTING[iNEXTBACK]);
					lcd.setCursor(12,  1);
					lcd.print(aHIHAT_CLOSE[iNEXTBACK]);
					break;

					case  4:
					lcd.clear();
					lcd.print(aINSTRUMENT[iUPDOWN]);
					lcd.setCursor(0,  1);
					lcd.print(aSETTING[iNEXTBACK]);
					lcd.setCursor(12,  1);
					lcd.print(aHIHAT_PEDAL[iNEXTBACK]);
					break;

					case  5:
					lcd.clear();
					lcd.print(aINSTRUMENT[iUPDOWN]);
					lcd.setCursor(0,  1);
					lcd.print(aSETTING[iNEXTBACK]);
					lcd.setCursor(12,  1);
					lcd.print(aKICK[iNEXTBACK]);
					break;

					case  6:
					lcd.clear();
					lcd.print(aINSTRUMENT[iUPDOWN]);
					lcd.setCursor(0,  1);
					lcd.print(aSETTING_ADVANCE[iNEXTBACK]);
					lcd.setCursor(12,  1);
					lcd.print(aSETTING[iNEXTBACK]);
					break;
				}

				bButtonState  = true;
			}

		// Instrument Sensors

			// Snare Drum
			if  (iPiezoValue_A0 > aSNARE[0] && bSnareFlag == false) {

				for (int i  = 0; i < aSETTING[0]; i++) {
					int iPeak_A0 = analogRead(A0);
					int  iPeak_A1 = analogRead(A1);
					delay(1);
					if (iPeak_A0 > aSNARE[4])  {
						aSNARE[4] = iPeak_A0;
					}
					if (iPeak_A1  > aSNARE_RIM[4]) {
						aSNARE_RIM[4] = iPeak_A1;
					}
				}
				aSNARE[5]  = aSNARE[4];
				aSNARE_RIM[5] = aSNARE_RIM[4];
				aSNARE[4] = map(aSNARE[4],  aSNARE[0], aSNARE[1], 0, 127);
				aSNARE_RIM[4] = map(aSNARE_RIM[4], aSNARE_RIM[0],  aSNARE_RIM[1], 0, 127);
				aSNARE[4] = (aSNARE[4] *  aSNARE[4]) / 127; //  Curve setting

			//aSNARE_RIM[4] = (aSNARE_RIM[4] * aSNARE_RIM[4]) / 127;
				if  (aSNARE[4] <= 1) {
					aSNARE[4] = 1;
				}
				if (aSNARE[4]  > 127) {
					aSNARE[4] = 127;
				}
				if (aSNARE_RIM[4]  <= 0) {
					aSNARE_RIM[4] = 0;
				}
				if (aSNARE_RIM[4]  > 127) {
					aSNARE_RIM[4] = 127;
				}
				if (aSNARE_RIM[5]  > aSETTING[1]) {
					MIDI.sendNoteOn(aSNARE_RIM[2], aSNARE_RIM[4], 1);   //(note, velocity, channel)
					MIDI.sendNoteOn(aSNARE_RIM[2], 0, 1);
					lcd.clear();
					lcd.print("SNARE  RIM");
					lcd.setCursor(0, 1);
					lcd.print(aSNARE_RIM[4]);
					bSnareFlag  = true;
				}

			//else if (aSNARE[5] > aSNARE_RIM[5])
				else  {
					MIDI.sendNoteOn(aSNARE[2], aSNARE[4], 1);   //(note, velocity, channel)
					MIDI.sendNoteOn(aSNARE[2],  0, 1);
					lcd.clear();
					lcd.print("SNARE HEAD");
					lcd.setCursor(0,  1);
					lcd.print(aSNARE[4]);
				//lcd.setCursor(10, 1);
				//lcd.print(aSNARE_RIM[5]);
					bSnareFlag  = true;
				}
			}

		// Hi-Hat Cymbal
			if (iPiezoValue_A2  > aHIHAT[0] && bHihatFlag == false) {
				for (int i = 0; i < aSETTING[0];  i++) {
					int iPeak_A2 = analogRead(A2);
					delay(1);
					if  (iPeak_A2 > aHIHAT[4]) {
						aHIHAT[4] = iPeak_A2;
					}
				}
				aHIHAT[5]  = aHIHAT[4];
				aHIHAT[4] = map(aHIHAT[4], aHIHAT[0], aHIHAT[1], 0, 127);
				aHIHAT[4]  = (aHIHAT[4] * aHIHAT[4]) / 127;
				if (aHIHAT[4] <= 1) {
					aHIHAT[4]  = 1;
				}
				if (aHIHAT[4] > 127) {
					aHIHAT[4] = 127;
				}
				if  (iPiezoValue_A0 < aHIHAT_PEDAL[0]) {
					MIDI.sendNoteOn(aHIHAT[2], aHIHAT[4],  1);
					MIDI.sendNoteOn(aHIHAT[2], 0, 1);
					lcd.clear();
					lcd.print("HIHAT  OPEN");
					lcd.setCursor(0, 1);
					lcd.print(aHIHAT[4]);
					bHihatFlag  = true;
				}
				else if (iPiezoValue_A0 >= aHIHAT_PEDAL[0]) {
					MIDI.sendNoteOn(aHIHAT_CLOSE[2],  aHIHAT[4], 1);
					MIDI.sendNoteOn(aHIHAT_CLOSE[2], 0, 1);
					lcd.clear();
					lcd.print("HIHAT  CLOSE");
					lcd.setCursor(0, 1);
					lcd.print(aHIHAT[4]);
					bHihatFlag  = true;
				}
			}

		// Hi-hat Pedal
			if (iPiezoValue_A0  > aHIHAT_PEDAL[0] && bPedalFlag == false) {
				MIDI.sendNoteOn(aHIHAT_PEDAL[2],  aSETTING[2], 1);  // (note, velocity, channel)
				MIDI.sendNoteOn(aHIHAT_PEDAL[2],  0, 1);
				lcd.clear();
				lcd.print("HIHAT PEDAL");
				lcd.setCursor(0,  1);
				lcd.print(aSETTING[2]);
				bPedalFlag = true;
			}

		//  Kick Drum
			if (iPiezoValue_A3 > aKICK[0] && bKickFlag == false) {
				for  (int i = 0; i < aSETTING[0]; i++) {
					int iPeak_A3 = analogRead(A3);
					delay(1);
					if  (iPeak_A3 > aKICK[4]) {
						aKICK[4] = iPeak_A3;
					}
				}

				aKICK[5]  = aKICK[4];
				aKICK[4] = map(aKICK[4], aKICK[0], aKICK[1], 0, 127);
				aKICK[4]  = (aKICK[4] * aKICK[4]) / 127;
				if (aKICK[4] <= 1) {
					aKICK[4]  = 1;
				}
				if (aKICK[4] > 127) {
					aKICK[4] = 127;
				}
				MIDI.sendNoteOn(aKICK[2],  aKICK[4], 1);
				MIDI.sendNoteOn(aKICK[2], 0, 1);
				lcd.clear();
				lcd.print("KICK");
				lcd.setCursor(0,  1);
				lcd.print(aKICK[4]);
				bKickFlag = true;
			}

//  --- BEGIN 'Code in Progress' --- //
// --- I could be wrong, but this is what  it appears to be --- and out of curiousity what is purpose of this sequence? --  //

			// I=(A0);  // Previous Code
			// -- DOES iSensorValue_A0  need to be declared as an integer?  How does this relate to iPiezoValue_A0?  --  //
			if (iSensorValue_A0 < (aSNARE[5] * (0.01 * aSNARE[3]))) {
				bSnareFlag  = false;
			}
			if (iPiezoValue_A0 <= aHIHAT_PEDAL[0] && iPiezoValue_A2  < (aHIHAT[5] * (0.01 * aHIHAT[3])) && bHihatFlag == true) {
				delay(aSETTING[3]);
				//  iSensorValue_A1 is reading analogRead(A2), but this is aHIHAT_PEDAL (which is analogRead(A2)
				int  iSensorValue_A1 = analogRead(A2);
				if (iSensorValue_A1 < (aHIHAT[5] *  (0.01 * aHIHAT[3]))) {
					bHihatFlag = false;
				}
			}
			if  (iPiezoValue_A0 >= aHIHAT_PEDAL[0] && iPiezoValue_A2 < (aHIHAT[5] *(0.01 * aHIHAT[3]))  && bHihatFlag == true) {
				delay(aSETTING[3]);
				int iSensorValue_A2  = analogRead(A2);
				if (iSensorValue_A2 < (aHIHAT[5] * (0.01 * aHIHAT[3])))  {
					bHihatFlag = false;
				}
			}
			if (iPiezoValue_A3  < (aKICK[5] * (0.01 * aKICK[3])) && bKickFlag == true) {
				delay(aSETTING[3]);
				//  -- Should declared iSensorValue_A3 be iPiezoValue_A3?  iSensorValue_A3 is declared  but not used anywhere??
				int iSensorValue_A3 = analogRead(A3);
				if  (iPiezoValue_A3 < (aKICK[5] * (0.01 * aKICK[3]))) {
				bKickFlag = false;
				}
			}
			if  (iPiezoValue_A0 <= aHIHAT_PEDAL[0] && bPedalFlag == true) {
				bPedalFlag  = false;
			}

// --- END 'Code in Progress' --- //
		}

Downloadable files

circuit_x5tIBQ5SLw.png

circuit_nZotR7rJMM.fzz

circuit_x5tIBQ5SLw.png

Comments

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Anonymous user

2 years ago

Nice job, thanks for sharing

Anonymous user

2 years ago

Nice job, thanks for sharing

itubal

2 years ago

Very nice project. I'd be more ambitious. I'd make the complete set. I'm working in a project with at least 25 piezos. Pay attention at "JamDrum" project. Thankyou for your work!

FloBra9

2 years ago

Hello Itubal, I cannot find your project. Is it online already? Best, Flo

Anonymous user

2 years ago

HI, Ryokosaka is the code in the "hello drum" applicable to arduino mega. also could you please upload a schematic for the lcd and button connections for arduino mega

Anonymous user

2 years ago

Hi Ryo Kosaka I want to inform you. I have Arduino UNO (Atmel 328p variant) but not the same as UNO you have and can place the piezoelectric sensor into the digital pin for more drum instruments? And if I upload this code for my Arduino UNO board can be recognized or support that?

Anonymous user

2 years ago

Sir, please tell me name of the drum app you instal in your mobile phone and please discribe the process please sir.

Anonymous user

2 years ago

As far as i can tell, he used garageband for iOS. There are many for Windows PCs as well, they are called DAW and you will need a VST Plugin to run a drumset.

Anonymous user

2 years ago

Hello one,How is connect tom 3 set and code thank u my mail harshana790@gmail.com

Anonymous user

2 years ago

Hi Ryo, Thanks for sharing this amazing project. Very nice job indeed. I am planning to do a similar project with slightly different approaches, but it is so amazing that i can take part in your research and development process via your different blogs, diy explanations, etc. Huge Respect for that Ryo. Best, Flo

FloBra9

3 years ago

jerryohhh

3 years ago

itubal

4 years ago

Very nice project. I'd be more ambitious. I'd make the complete set. I'm working in a project with at least 25 piezos. Pay attention at "JamDrum" project. Thankyou for your work!

Anonymous user

2 years ago

Hello Itubal, I cannot find your project. Is it online already? Best, Flo

harshana790

5 years ago

Hello one,How is connect tom 3 set and code thank u my mail harshana790@gmail.com

Anonymous user

5 years ago

Sir, please tell me name of the drum app you instal in your mobile phone and please discribe the process please sir.

FloBra9

2 years ago

As far as i can tell, he used garageband for iOS. There are many for Windows PCs as well, they are called DAW and you will need a VST Plugin to run a drumset.

Anonymous user

5 years ago

Nice job, thanks for sharing

Anonymous user

7 years ago

HI, Ryokosaka is the code in the "hello drum" applicable to arduino mega. also could you please upload a schematic for the lcd and button connections for arduino mega

ryokosaka

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