Minimal parts simple word clock

Simple word clock using 2812b leds.

Feb 29, 2020

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3 respects

clocks

Components and supplies

Arduino Nano R3

Breadboard (generic)

Jumper wires (generic)

Card stock, glue, misc supplies

Real Time Clock (RTC)

2812b addressable rgb Leds

Tools and machines

Soldering iron (generic)

Apps and platforms

Arduino IDE

Project description

Code

wordclock2812.ino

arduino

1#include <Wire.h>
2#include "RTClib.h"
3#include <FastLED.h>
4#define  NUM_LEDS 22
5#define DATA_PIN 7
6CRGB leds[NUM_LEDS];
7
8RTC_DS1307 rtc;
9
10
11void  setup () {
12 
13  
14
15  Serial.begin(9600);
16  if (! rtc.begin()) {
17    Serial.println("Couldn't find RTC");
18    while (1);
19  }
20
21  if  (! rtc.isrunning()) {
22    Serial.println("RTC is NOT running!");
23    
24  rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
25    
26  }
27
28{
29
30FastLED.addLeds<WS2812,  DATA_PIN, RGB>(leds, NUM_LEDS);
31}
32
33}
34void loop () {
35    DateTime  now = rtc.now();
36   int h;
37   
38    Serial.print(now.hour(), DEC);
39       h=(now.hour());
40     if (now.minute()>34){
41      h=h+1; 
42     }
43      
44   
45    Serial.print(':');
46    Serial.print(now.minute(), DEC);
47    leds[0] = CRGB::Yellow;
48    leds[20]  = CRGB::Yellow;
49     FastLED.show();
50    if (now.minute() <=4){
51      Serial.print  ("nothing");
52      
53        leds[1] = CRGB::Black;
54        leds[2] =  CRGB::Black;
55        leds[3] = CRGB::Black;
56        leds[4] = CRGB::Black;
57        leds[5] = CRGB::Black;
58        leds[6] = CRGB::Black;
59        leds[7]  = CRGB::Black;
60         
61          FastLED.show();
62      }
63      else  if (now.minute() <=9){
64      Serial.print ("five minutes past");
65        leds[5]  = CRGB::Red;
66        leds[6] = CRGB::Red;
67        leds[10] = CRGB::Red;
68          FastLED.show();
69      }
70      else if (now.minute() <=14){
71      Serial.print  ("ten minutes past");
72        leds[5] = CRGB::Black;
73        leds[2] = CRGB::Red;
74        leds[6] = CRGB::Red;
75        leds[10] = CRGB::Red;
76          FastLED.show();
77      }
78      else if (now.minute() <=19){
79      Serial.print ("quarter past");
80        leds[2] = CRGB::Black;
81        leds[4] = CRGB::Red;
82        leds[6]  = CRGB::Black;
83        leds[10] = CRGB::Red; 
84          FastLED.show();
85      }
86      else if (now.minute() <=24){
87      Serial.print ("twenty minutes  past");
88        leds[4] = CRGB::Black;
89        leds[3] = CRGB::Red;
90        leds[6]  = CRGB::Red;
91        leds[10] = CRGB::Red;
92           FastLED.show(); 
93      }
94      else if (now.minute() <=29){
95      Serial.print ("twenty-five  minutes past");
96      
97        leds[3] = CRGB::Red;
98        leds[5] =  CRGB::Red;
99        leds[6] = CRGB::Red;
100        leds[10] = CRGB::Red; 
101          FastLED.show();  
102      
103      
104      }
105      else if (now.minute()  <=34){
106      Serial.print ("half past");
107        leds[3] = CRGB::Black;
108        leds[5] = CRGB::Black;
109        leds[1] = CRGB::Red;
110        leds[6]  = CRGB::Black;
111        leds[10] = CRGB::Red; 
112          FastLED.show();  
113          
114       
115      }
116      else if (now.minute() <=39){
117      Serial.print  ("twenty-five minutes to");
118        leds[1] = CRGB::Black;
119        leds[10]  = CRGB::Black;
120        leds[3] = CRGB::Red;
121        leds[5] = CRGB::Red;
122        leds[6] = CRGB::Red;
123        leds[7] = CRGB::Red; 
124          FastLED.show();  
125      
126      }
127      else if (now.minute() <=44){
128      Serial.print  ("twenty minutes to");
129        leds[4] = CRGB::Black;
130        leds[5] =  CRGB::Black;
131        leds[3] = CRGB::Red;
132        leds[6] = CRGB::Red;
133        leds[7] = CRGB::Red;
134           FastLED.show(); 
135      }
136      else  if (now.minute() <=49){
137      Serial.print ("quarter to");
138        leds[3]  = CRGB::Black;
139        leds[4] = CRGB::Red;
140        leds[6] = CRGB::Black;
141        leds[7] = CRGB::Red; 
142          FastLED.show();
143      
144      }
145      else if (now.minute() <=54){
146      Serial.print ("ten minutes to"); 
147        leds[4] = CRGB::Black;
148        leds[2] = CRGB::Red;
149        leds[6]  = CRGB::Red;
150        leds[7] = CRGB::Red;
151          FastLED.show();
152      
153        
154      }
155      else if (now.minute() <=59){
156      Serial.print  ("five minutes to"); 
157        leds[2] = CRGB::Black;
158        leds[5] = CRGB::Red;
159        leds[6] = CRGB::Red;
160        leds[7] = CRGB::Red;
161          FastLED.show();  
162      }
163    
164 
165    
166    if (h==1){
167      leds[21] = CRGB::Black;
168      leds[9] = CRGB::Blue;
169      FastLED.show();
170    }
171    if (h==2){
172      leds[9] = CRGB::Black;
173      leds[11] = CRGB::Blue;
174     FastLED.show();  
175    } 
176    if (h==3){
177      leds[11] = CRGB::Black;
178      leds[8] =  CRGB::Blue;
179      FastLED.show();
180    } 
181    if (h==4){
182      leds[8]  = CRGB::Black;
183      leds[12] = CRGB::Red; 
184      FastLED.show();
185    }
186      if (h==5){
187      leds[12] = CRGB::Black;
188      leds[13] = CRGB::Red;
189      FastLED.show();
190      }
191    if (h==6){
192      leds[13] = CRGB::Black;
193      leds[16] = CRGB::Red;
194     FastLED.show(); 
195    }
196    if (h==7){
197      leds[16] = CRGB::Black;
198      leds[15] = CRGB::Blue;
199      FastLED.show();
200    } 
201    if (h==8){
202      leds[15] = CRGB::Black;
203      leds[14] = CRGB::Blue;  
204      FastLED.show();
205    }
206     if (h==9){
207      leds[14] = CRGB::Black;
208      leds[17] = CRGB::Blue;
209      FastLED.show();
210      }
211    if (h==10){
212      leds[17] = CRGB::Black;
213      leds[18] = CRGB::Blue;
214     FastLED.show();  
215    }
216    if (h==11){
217      leds[18] = CRGB::Black;
218      leds[19]  = CRGB::Blue;
219      FastLED.show();
220    } 
221    if (h==12){
222      leds[19]  = CRGB::Black;
223      leds[21] = CRGB::Green;
224     FastLED.show(); 
225    }  
226      
227     if (h==13){
228      leds[21] = CRGB::Black;
229      leds[9]  = CRGB::Green;
230      FastLED.show();
231    }
232    if (h==14){
233      leds[9]  = CRGB::Black;
234      leds[11] = CRGB::Green;
235     FastLED.show(); 
236    }  
237    if (h==15){
238      leds[11] = CRGB::Black;
239      leds[8] = CRGB::Green;
240      FastLED.show();
241    } 
242    if (h==16){
243      leds[8] = CRGB::Black;
244      leds[12] = CRGB::Green; 
245      FastLED.show();
246    }
247      if (h==17){
248      leds[12] = CRGB::Black;
249      leds[13] = CRGB::Green;
250      FastLED.show();
251      }
252    if (h==18){
253      leds[13] = CRGB::Black;
254      leds[16] =  CRGB::Green;
255     FastLED.show(); 
256    }
257    if (h==19){
258      leds[16]  = CRGB::Black;
259      leds[15] = CRGB::Green;
260      FastLED.show();
261    }  
262    if (h==20){
263      leds[15] = CRGB::Black;
264      leds[14] = CRGB::Green;  
265      FastLED.show();
266    }
267     if (h==21){
268      leds[14] = CRGB::Black;
269      leds[17] = CRGB::Green;
270      FastLED.show();
271      }
272    if (h==22){
273      leds[17] = CRGB::Black;
274      leds[18] = CRGB::Green;
275     FastLED.show();  
276    }
277    if (h==23){
278      leds[18] = CRGB::Black;
279      leds[19]  = CRGB::Green;
280      FastLED.show();
281    } 
282    if (h==0){
283      leds[19]  = CRGB::Black;
284      leds[21] = CRGB::Red;
285     FastLED.show(); 
286    }   
287      
288    
289      
290    Serial.print(':');
291    Serial.print(now.second(),  DEC);
292    Serial.println();
293    
294   
295    
296    Serial.println();
297    delay(3000);
298}
299

#include <Wire.h>
#include "RTClib.h"
#include <FastLED.h>
#define  NUM_LEDS 22
#define DATA_PIN 7
CRGB leds[NUM_LEDS];

RTC_DS1307 rtc;


void  setup () {
 
  

  Serial.begin(9600);
  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }

  if  (! rtc.isrunning()) {
    Serial.println("RTC is NOT running!");
    
  rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
    
  }

{

FastLED.addLeds<WS2812,  DATA_PIN, RGB>(leds, NUM_LEDS);
}

}
void loop () {
    DateTime  now = rtc.now();
   int h;
   
    Serial.print(now.hour(), DEC);
       h=(now.hour());
     if (now.minute()>34){
      h=h+1; 
     }
      
   
    Serial.print(':');
    Serial.print(now.minute(), DEC);
    leds[0] = CRGB::Yellow;
    leds[20]  = CRGB::Yellow;
     FastLED.show();
    if (now.minute() <=4){
      Serial.print  ("nothing");
      
        leds[1] = CRGB::Black;
        leds[2] =  CRGB::Black;
        leds[3] = CRGB::Black;
        leds[4] = CRGB::Black;
        leds[5] = CRGB::Black;
        leds[6] = CRGB::Black;
        leds[7]  = CRGB::Black;
         
          FastLED.show();
      }
      else  if (now.minute() <=9){
      Serial.print ("five minutes past");
        leds[5]  = CRGB::Red;
        leds[6] = CRGB::Red;
        leds[10] = CRGB::Red;
          FastLED.show();
      }
      else if (now.minute() <=14){
      Serial.print  ("ten minutes past");
        leds[5] = CRGB::Black;
        leds[2] = CRGB::Red;
        leds[6] = CRGB::Red;
        leds[10] = CRGB::Red;
          FastLED.show();
      }
      else if (now.minute() <=19){
      Serial.print ("quarter past");
        leds[2] = CRGB::Black;
        leds[4] = CRGB::Red;
        leds[6]  = CRGB::Black;
        leds[10] = CRGB::Red; 
          FastLED.show();
      }
      else if (now.minute() <=24){
      Serial.print ("twenty minutes  past");
        leds[4] = CRGB::Black;
        leds[3] = CRGB::Red;
        leds[6]  = CRGB::Red;
        leds[10] = CRGB::Red;
           FastLED.show(); 
      }
      else if (now.minute() <=29){
      Serial.print ("twenty-five  minutes past");
      
        leds[3] = CRGB::Red;
        leds[5] =  CRGB::Red;
        leds[6] = CRGB::Red;
        leds[10] = CRGB::Red; 
          FastLED.show();  
      
      
      }
      else if (now.minute()  <=34){
      Serial.print ("half past");
        leds[3] = CRGB::Black;
        leds[5] = CRGB::Black;
        leds[1] = CRGB::Red;
        leds[6]  = CRGB::Black;
        leds[10] = CRGB::Red; 
          FastLED.show();  
          
       
      }
      else if (now.minute() <=39){
      Serial.print  ("twenty-five minutes to");
        leds[1] = CRGB::Black;
        leds[10]  = CRGB::Black;
        leds[3] = CRGB::Red;
        leds[5] = CRGB::Red;
        leds[6] = CRGB::Red;
        leds[7] = CRGB::Red; 
          FastLED.show();  
      
      }
      else if (now.minute() <=44){
      Serial.print  ("twenty minutes to");
        leds[4] = CRGB::Black;
        leds[5] =  CRGB::Black;
        leds[3] = CRGB::Red;
        leds[6] = CRGB::Red;
        leds[7] = CRGB::Red;
           FastLED.show(); 
      }
      else  if (now.minute() <=49){
      Serial.print ("quarter to");
        leds[3]  = CRGB::Black;
        leds[4] = CRGB::Red;
        leds[6] = CRGB::Black;
        leds[7] = CRGB::Red; 
          FastLED.show();
      
      }
      else if (now.minute() <=54){
      Serial.print ("ten minutes to"); 
        leds[4] = CRGB::Black;
        leds[2] = CRGB::Red;
        leds[6]  = CRGB::Red;
        leds[7] = CRGB::Red;
          FastLED.show();
      
        
      }
      else if (now.minute() <=59){
      Serial.print  ("five minutes to"); 
        leds[2] = CRGB::Black;
        leds[5] = CRGB::Red;
        leds[6] = CRGB::Red;
        leds[7] = CRGB::Red;
          FastLED.show();  
      }
    
 
    
    if (h==1){
      leds[21] = CRGB::Black;
      leds[9] = CRGB::Blue;
      FastLED.show();
    }
    if (h==2){
      leds[9] = CRGB::Black;
      leds[11] = CRGB::Blue;
     FastLED.show();  
    } 
    if (h==3){
      leds[11] = CRGB::Black;
      leds[8] =  CRGB::Blue;
      FastLED.show();
    } 
    if (h==4){
      leds[8]  = CRGB::Black;
      leds[12] = CRGB::Red; 
      FastLED.show();
    }
      if (h==5){
      leds[12] = CRGB::Black;
      leds[13] = CRGB::Red;
      FastLED.show();
      }
    if (h==6){
      leds[13] = CRGB::Black;
      leds[16] = CRGB::Red;
     FastLED.show(); 
    }
    if (h==7){
      leds[16] = CRGB::Black;
      leds[15] = CRGB::Blue;
      FastLED.show();
    } 
    if (h==8){
      leds[15] = CRGB::Black;
      leds[14] = CRGB::Blue;  
      FastLED.show();
    }
     if (h==9){
      leds[14] = CRGB::Black;
      leds[17] = CRGB::Blue;
      FastLED.show();
      }
    if (h==10){
      leds[17] = CRGB::Black;
      leds[18] = CRGB::Blue;
     FastLED.show();  
    }
    if (h==11){
      leds[18] = CRGB::Black;
      leds[19]  = CRGB::Blue;
      FastLED.show();
    } 
    if (h==12){
      leds[19]  = CRGB::Black;
      leds[21] = CRGB::Green;
     FastLED.show(); 
    }  
      
     if (h==13){
      leds[21] = CRGB::Black;
      leds[9]  = CRGB::Green;
      FastLED.show();
    }
    if (h==14){
      leds[9]  = CRGB::Black;
      leds[11] = CRGB::Green;
     FastLED.show(); 
    }  
    if (h==15){
      leds[11] = CRGB::Black;
      leds[8] = CRGB::Green;
      FastLED.show();
    } 
    if (h==16){
      leds[8] = CRGB::Black;
      leds[12] = CRGB::Green; 
      FastLED.show();
    }
      if (h==17){
      leds[12] = CRGB::Black;
      leds[13] = CRGB::Green;
      FastLED.show();
      }
    if (h==18){
      leds[13] = CRGB::Black;
      leds[16] =  CRGB::Green;
     FastLED.show(); 
    }
    if (h==19){
      leds[16]  = CRGB::Black;
      leds[15] = CRGB::Green;
      FastLED.show();
    }  
    if (h==20){
      leds[15] = CRGB::Black;
      leds[14] = CRGB::Green;  
      FastLED.show();
    }
     if (h==21){
      leds[14] = CRGB::Black;
      leds[17] = CRGB::Green;
      FastLED.show();
      }
    if (h==22){
      leds[17] = CRGB::Black;
      leds[18] = CRGB::Green;
     FastLED.show();  
    }
    if (h==23){
      leds[18] = CRGB::Black;
      leds[19]  = CRGB::Green;
      FastLED.show();
    } 
    if (h==0){
      leds[19]  = CRGB::Black;
      leds[21] = CRGB::Red;
     FastLED.show(); 
    }   
      
    
      
    Serial.print(':');
    Serial.print(now.second(),  DEC);
    Serial.println();
    
   
    
    Serial.println();
    delay(3000);
}

Downloadable files

WORDCLOCK2812

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