Clap-Controlled Lights That You Can Actually Use

1/*
2* GND → GND
3 * VCC → 5V
4 * Gate → Pin 4
5 * Envelope → A0
6
7  * 
8 * LED → 7
9 * LED → 9
10 */
11int LED0 = 7;
12int firstClap;
13int
14  LED1 = 9;
15
16
17
18// if true, the LED is on
19// if false, then LED is off
20bool
21  state = false;
22
23// when the last clapped happened
24unsigned long lastClapTime;
25
26//
27  pin's state.
28void soundISR()
29{
30  int pin_val;
31
32  pin_val = digitalRead(PIN_GATE_IN);
33
34  digitalWrite(PIN_LED_OUT, pin_val);
35}
36
37void setup()
38{
39  Serial.begin(9600);
40
41
42  //  Configure LED pin as output
43  pinMode(PIN_LED_OUT, OUTPUT);
44
45  //
46  configure input to interrupt
47  pinMode(PIN_GATE_IN, INPUT);
48  attachInterrupt(IRQ_GATE_IN,
49  soundISR, CHANGE);
50
51
52  pinMode(3, OUTPUT);
53  digitalWrite(3, LOW);
54
55  
56  pinMode(LED0, OUTPUT);
57  pinMode(LED1, OUTPUT);
58
59  // when we start,
60  LED is off
61  state = false;
62  lastClapTime = 0;
63
64  digitalWrite(LED0,
65  LOW);
66  digitalWrite(LED1, LOW);
67}
68
69//
70// This function returns true
71  if person has clapped
72// else it returns false.
73//
74bool isClapped(int sound)
75  {
76  if (sound > 50) {
77    return true;
78  }
79  return false;
80}
81
82void
83  toggleState() {
84  if (state == true) {
85    state = false;
86    digitalWrite(LED0,
87  LOW);
88    digitalWrite(LED1, LOW);
89  } else {
90    state = true;
91    digitalWrite(LED0,
92  HIGH);
93    digitalWrite(LED1, HIGH);
94  }
95}
96
97
98void loop() {  
99
100  int sound = analogRead(PIN_ANALOG_IN);
101
102  unsigned long now = millis();
103
104  if (isClapped(sound)) {
105    delay(200);
106    
107    // check if the two
108  previos claps were within 1 second of one another 
109    if (lastClapTime + 1000
110  > now) {
111      Serial.println("Now: " + String(now) + " LastClappedTime: "
112  +  String(lastClapTime) + " Toggling");
113      toggleState();
114      lastClapTime
115  = 0;
116      delay(1000);
117    } else {
118      Serial.println("Now: " + String(now)
119  + " LastClappedTime: " +  String(lastClapTime));
120      lastClapTime = now;
121
122    }
123  }
124}

1/*
2* GND → GND
3 * VCC → 5V
4 * Gate → Pin 4
5 * Envelope → A0
6  * 
7 * LED → 7
8 * LED → 9
9 */
10int LED0 = 7;
11int firstClap;
12int  LED1 = 9;
13
14
15
16// if true, the LED is on
17// if false, then LED is off
18bool  state = false;
19
20// when the last clapped happened
21unsigned long lastClapTime;
22
23//  pin's state.
24void soundISR()
25{
26  int pin_val;
27
28  pin_val = digitalRead(PIN_GATE_IN);
29  digitalWrite(PIN_LED_OUT, pin_val);
30}
31
32void setup()
33{
34  Serial.begin(9600);
35
36  //  Configure LED pin as output
37  pinMode(PIN_LED_OUT, OUTPUT);
38
39  //  configure input to interrupt
40  pinMode(PIN_GATE_IN, INPUT);
41  attachInterrupt(IRQ_GATE_IN,  soundISR, CHANGE);
42
43
44  pinMode(3, OUTPUT);
45  digitalWrite(3, LOW);
46  
47  pinMode(LED0, OUTPUT);
48  pinMode(LED1, OUTPUT);
49
50  // when we start,  LED is off
51  state = false;
52  lastClapTime = 0;
53
54  digitalWrite(LED0,  LOW);
55  digitalWrite(LED1, LOW);
56}
57
58//
59// This function returns true  if person has clapped
60// else it returns false.
61//
62bool isClapped(int sound)  {
63  if (sound > 50) {
64    return true;
65  }
66  return false;
67}
68
69void  toggleState() {
70  if (state == true) {
71    state = false;
72    digitalWrite(LED0,  LOW);
73    digitalWrite(LED1, LOW);
74  } else {
75    state = true;
76    digitalWrite(LED0,  HIGH);
77    digitalWrite(LED1, HIGH);
78  }
79}
80
81
82void loop() {  
83  int sound = analogRead(PIN_ANALOG_IN);
84
85  unsigned long now = millis();
86  if (isClapped(sound)) {
87    delay(200);
88    
89    // check if the two  previos claps were within 1 second of one another 
90    if (lastClapTime + 1000  > now) {
91      Serial.println("Now: " + String(now) + " LastClappedTime: "  +  String(lastClapTime) + " Toggling");
92      toggleState();
93      lastClapTime  = 0;
94      delay(1000);
95    } else {
96      Serial.println("Now: " + String(now)  + " LastClappedTime: " +  String(lastClapTime));
97      lastClapTime = now;
98    }
99  }
100}