Yet another Arduino clock.... But this is a nice one :-)

A transparent display, my mania of numbers, plexiglass.... Yes you have a nice clock.

Mar 26, 2022

•

336 views

•

0 respects

clocks

Components and supplies

Arduino Nano 33 IoT

DFRobot Transparent Display

Tools and machines

Drill / Driver, Cordless

Project description

Code

Nice Display Clock

arduino

1// Sketch clock with Arduino and DF Robot Transparent Display 
2// Carlo  Stramaglia
3// 26 March 2022
4// Youtube channel https://www.youtube.com/c/CarloStramaglia
5
6
7#include  <Arduino.h>
8#include <U8g2lib.h>
9#include <WiFiNINA.h>
10#include <UnixTime.h>
11#include  "arduino_secrets.h"
12
13#ifdef U8X8_HAVE_HW_SPI
14#include <SPI.h>
15#endif
16#ifdef  U8X8_HAVE_HW_I2C
17#include <Wire.h>
18#endif
19
20UnixTime tm (1);
21
22int  Year;
23int Month;
24int Day;
25int Hour;
26int Minute;
27int Second;
28int  Status=0;
29long SecondsToEnd;
30
31
32U8G2_SSD1309_128X64_NONAME0_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 5, /* dc=*/ 7, /* reset=*/  6);
33
34///////please enter your sensitive data in the Secret tab/arduino_secrets.h
35char  ssid[] = SECRET_SSID;        // your network SSID (name)
36char pass[] = SECRET_PASS;    // your network password (use for WPA, or use as key for WEP)
37int keyIndex  = 0;            // your network key index number (needed only for WEP)
38
39int  status = WL_IDLE_STATUS;
40
41void printWifiStatus()
42{
43  // print the SSID  of the network you're attached to:
44  Serial.print("SSID: ");
45  Serial.println(WiFi.SSID());
46
47  // print your board's IP address:
48  IPAddress ip = WiFi.localIP();
49  Serial.print("IP  Address: ");
50  Serial.println(ip);
51
52  // print the received signal strength:
53  long rssi = WiFi.RSSI();
54  Serial.print("Signal strength (RSSI):");
55  Serial.print(rssi);
56  Serial.println(" dBm");
57}
58
59
60
61void setup() {
62  Serial.begin(115200);
63  u8g2.begin();
64  WiFi.begin(SECRET_SSID, SECRET_PASS);
65  delay(1000);
66  
67  // attempt to connect to Wifi network:
68  while (status != WL_CONNECTED)
69  {    
70    // Connect to WPA/WPA2 network. Change this line if using open or  WEP network:
71    status = WiFi.status();
72    delay(1000);
73  }
74
75  printWifiStatus();
76
77}
78
79void  loop() {
80
81  int i;
82  
83  for (i=0; i< 20; i++)
84    display();
85  for (i=0; i< 20; i++)
86    secondsToYear();
87  for (i=0; i< 20; i++)
88    secondsToMonth();
89  for (i=0; i< 20; i++)
90    secondsToDay();
91}
92
93//Display second to end  of day
94void secondsToDay()
95{
96  char buf[40];
97  tm.getDateTime (WiFi.getTime());
98  Day = tm.day;
99  Month = tm.month;
100  Year = tm.year;
101  Hour = tm.hour;
102  Minute = tm.minute;
103  Second = tm.second;
104  
105    SecondsToEnd = (long)(23-Hour)*60*60;
106    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
107    SecondsToEnd = SecondsToEnd  + (long)60-Second;      
108    
109  
110  Serial.print ("Time: ");
111  Serial.print  (Hour);
112  Serial.print (Minute);
113  Serial.println (Second);
114  Serial.print  ("Seconds to end of day: ");
115  sprintf(buf, "%.8ld", SecondsToEnd);
116  Serial.println  (buf);
117
118  u8g2.clearBuffer();
119  u8g2.setFont(u8g2_font_ncenB18_tr);
120
121  u8g2.drawStr(5,50, buf);
122  sprintf(buf, "Seconds To Day End");
123  u8g2.setFont(u8g2_font_ncenB08_tr);
124  u8g2.drawStr(1,10, buf);
125  u8g2.sendBuffer();
126
127  delay(1000);
128}
129
130//  Display Seconds to end of the month
131void secondsToMonth()
132{
133  char buf[40];
134  tm.getDateTime (WiFi.getTime());
135  Day = tm.day;
136  Month = tm.month;
137  Year = tm.year;
138  Hour = tm.hour;
139  Minute = tm.minute;
140  Second = tm.second;
141  
142  if (Month == 1 or Month == 3 or Month == 5 or Month == 7 or Month == 8 or  Month == 10 or Month == 12)
143  {
144    Serial.print ("Days to end of month:  ");
145    Serial.println (31-Day);
146    if (Day != 31)
147    {
148      SecondsToEnd  = (long)(31-Day)*24*60*60;
149      SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
150    } 
151    else
152      SecondsToEnd = (long)(23-Hour)*60*60;
153      
154    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
155    SecondsToEnd = SecondsToEnd  + (long)60-Second;      
156    
157  }
158    
159  else if (Month == 2)
160  {
161    Serial.print ("Days to end of month: ");
162    Serial.println (27-Day);
163    if (Day != 28)
164    {
165      SecondsToEnd = (long)(27-Day)*24*60*60;
166      SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
167    } 
168    else
169      SecondsToEnd = (long)(23-Hour)*60*60;
170      
171    SecondsToEnd = SecondsToEnd  + (long)(59-Minute)*60;
172    SecondsToEnd = SecondsToEnd + (long)60-Second;
173    
174  }
175  else if (Month == 4 or Month == 6 or Month == 9 or Month == 11)
176  {
177    Serial.print ("Days to end of month: ");
178    Serial.println (29-Day);
179    if (Day !=30)
180    {
181      SecondsToEnd = (long)(29-Day)*24*60*60;
182      SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
183    } 
184    else
185      SecondsToEnd = (long)(23-Hour)*60*60;
186      
187    SecondsToEnd = SecondsToEnd  + (long)(59-Minute)*60;
188    SecondsToEnd = SecondsToEnd + (long)60-Second;
189    
190  }
191  
192  Serial.print ("Time: ");
193  Serial.print (Hour);
194  Serial.print (Minute);
195  Serial.println (Second);
196  Serial.print ("Seconds  to end of month: ");
197  sprintf(buf, "%.8ld", SecondsToEnd);
198  Serial.println  (buf);
199
200  u8g2.clearBuffer();
201  u8g2.setFont(u8g2_font_ncenB18_tr);
202
203  u8g2.drawStr(5,50, buf);
204  sprintf(buf, "Seconds To Month End");
205  u8g2.setFont(u8g2_font_ncenB08_tr);
206  u8g2.drawStr(0,10, buf);
207  u8g2.sendBuffer();
208  delay(1000);
209}
210
211//  Display Seconds to end of the year
212void secondsToYear()
213{
214  char buf[40];
215  tm.getDateTime (WiFi.getTime());
216  Day = tm.day;
217  Month = tm.month;
218  Year = tm.year;
219  Hour = tm.hour;
220  Minute = tm.minute;
221  Second = tm.second;
222  
223  if (Month == 1)
224  {
225    Serial.print ("Days to end of month: ");
226    Serial.println (31-Day);
227    if (Day != 31)
228    {
229      SecondsToEnd  = (long)(31-Day)*24*60*60; //da aggiungere
230      SecondsToEnd = SecondsToEnd  + (long)28*24*60*60;
231    }
232    else 
233      SecondsToEnd = (long)28*24*60*60;
234      
235    SecondsToEnd = SecondsToEnd + (long)6*31*24*60*60;
236    SecondsToEnd  = SecondsToEnd + (long)4*30*24*60*60;
237    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
238    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
239    SecondsToEnd = SecondsToEnd  + (long)60-Second;
240  }
241    
242  else if (Month == 2)
243  {
244    Serial.print  ("Days to end of month: ");
245    Serial.println (27-Day);
246    if (Day !=  28)
247    {
248      SecondsToEnd = (long)(27-Day)*24*60*60;
249      SecondsToEnd  = SecondsToEnd + (long)6*31*24*60*60;
250    }
251    else
252      SecondsToEnd  = (long)6*31*24*60*60;
253 
254    SecondsToEnd = SecondsToEnd + (long)4*30*24*60*60;
255    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
256    SecondsToEnd = SecondsToEnd  + (long)(59-Minute)*60;
257    SecondsToEnd = SecondsToEnd + (long)60-Second;
258    
259  }
260  else if (Month == 3)
261  {
262    Serial.print ("Days to end  of month: ");
263    Serial.println (30-Day);
264    if (Day != 31)
265    {
266      SecondsToEnd = (long)(30-Day)*24*60*60;
267      SecondsToEnd = SecondsToEnd  + (long)5*31*24*60*60;
268    }
269    else
270      SecondsToEnd = (long)5*31*24*60*60;
271      
272    SecondsToEnd = SecondsToEnd + (long)4*30*24*60*60;
273    SecondsToEnd  = SecondsToEnd + (long)(23-Hour)*60*60;
274    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
275    SecondsToEnd = SecondsToEnd + (long)60-Second;
276  
277  }
278  else if (Month  == 4)
279  {
280    Serial.print ("Days to end of month: ");
281    Serial.println  (29-Day);
282    if (Day != 30)
283    {
284      SecondsToEnd = (long)(24-Day)*24*60*60;
285      SecondsToEnd = SecondsToEnd + (long)5*31*24*60*60;
286    }
287    else
288      SecondsToEnd = (long)5*31*24*60*60;
289      
290    SecondsToEnd = SecondsToEnd  + (long)3*30*24*60*60;
291    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
292    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
293    SecondsToEnd = SecondsToEnd  + (long)60-Second;  
294    
295  }
296  else if (Month == 5)
297  {
298    Serial.print  ("Days to end of month: ");
299    Serial.println (30-Day);
300    if (Day !=  31)
301    {
302      SecondsToEnd = (long)(30-Day)*24*60*60;
303      SecondsToEnd  = SecondsToEnd + (long)4*31*24*60*60;
304    }
305    else
306      SecondsToEnd  = (long)4*31*24*60*60;
307    
308    SecondsToEnd = SecondsToEnd + (long)3*30*24*60*60;
309    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
310    SecondsToEnd = SecondsToEnd  + (long)(59-Minute)*60;
311    SecondsToEnd = SecondsToEnd + (long)60-Second;
312  }
313  else if (Month == 6)
314  {
315    Serial.print ("Days to end of month:  ");
316    Serial.println (29-Day);
317    if (Day !=30)
318    {
319      SecondsToEnd  = (long)(29-Day)*24*60*60;
320      SecondsToEnd = SecondsToEnd + (long)4*31*24*60*60;
321    }
322    else
323      SecondsToEnd = (long)4*31*24*60*60;
324      
325    SecondsToEnd  = SecondsToEnd + (long)2*30*24*60*60;
326    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
327    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
328    SecondsToEnd = SecondsToEnd  + (long)60-Second;
329  }
330  else if (Month == 7)
331  {
332    Serial.print ("Days  to end of month: ");
333    Serial.println (30-Day);
334    if (Day != 31)
335    {
336      SecondsToEnd = (long)(30-Day)*24*60*60;
337      SecondsToEnd = SecondsToEnd  + (long)3*31*24*60*60;
338    }
339    else
340      SecondsToEnd = (long)3*31*24*60*60;
341      
342    SecondsToEnd = SecondsToEnd + (long)2*30*24*60*60;
343    SecondsToEnd  = SecondsToEnd + (long)(23-Hour)*60*60;
344    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
345    SecondsToEnd = SecondsToEnd + (long)60-Second;
346  }
347  else if (Month ==  8)
348  {
349    Serial.print ("Days to end of month: ");
350    Serial.println  (30-Day);
351    if (Day != 31)
352    {
353      SecondsToEnd = (long)(30-Day)*24*60*60;
354      SecondsToEnd = SecondsToEnd + (long)2*31*24*60*60;
355    }
356    else
357      SecondsToEnd = (long)2*31*24*60*60;
358    
359    SecondsToEnd = SecondsToEnd  + (long)2*30*24*60*60;
360    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
361    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
362    SecondsToEnd = SecondsToEnd  + (long)60-Second;
363  }
364  else if (Month == 9)
365  {
366    Serial.print ("Days  to end of month: ");
367    Serial.println (29-Day);
368    if (Day != 30)
369    {
370      SecondsToEnd = (long)(29-Day)*24*60*60;
371      SecondsToEnd = SecondsToEnd  + (long)2*31*24*60*60;
372    }
373    else
374      SecondsToEnd = (long)2*31*24*60*60;
375      
376    SecondsToEnd = SecondsToEnd + (long)1*30*24*60*60;
377    SecondsToEnd  = SecondsToEnd + (long)(23-Hour)*60*60;
378    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
379    SecondsToEnd = SecondsToEnd + (long)60-Second;
380    
381  }
382  else if (Month  == 10)
383  {
384    Serial.print ("Days to end of month: ");
385    Serial.println  (30-Day);
386    if (Day != 31)
387    {
388      SecondsToEnd = (long)(30-Day)*24*60*60;
389      SecondsToEnd = SecondsToEnd + (long)1*31*24*60*60;
390    }
391    else
392      SecondsToEnd = (long)1*31*24*60*60;
393    
394    SecondsToEnd = SecondsToEnd  + (long)1*30*24*60*60;
395    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
396    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
397    SecondsToEnd = SecondsToEnd  + (long)60-Second;
398    
399  }
400  else if (Month == 11)
401  {
402    Serial.print  ("Days to end of month: ");
403    Serial.println (29-Day);
404    if (Day !=  30)
405    {
406      SecondsToEnd = (long)(29-Day)*24*60*60;
407      SecondsToEnd  = SecondsToEnd + (long)1*31*24*60*60;
408    }
409    else
410      SecondsToEnd  = (long)1*31*24*60*60;
411      
412    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
413    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
414    SecondsToEnd = SecondsToEnd  + (long)60-Second;
415    
416  }
417  else if (Month == 12)
418  {
419    Serial.print  ("Days to end of month: ");
420    Serial.println (30-Day);
421    if (Day !=  31)
422    {
423      SecondsToEnd = (long)(30-Day)*24*60*60;
424      SecondsToEnd  = SecondsToEnd + (long)(23-Hour)*60*60;
425    }
426    else
427      SecondsToEnd  = (long)(23-Hour)*60*60;
428      
429    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
430    SecondsToEnd = SecondsToEnd + (long)60-Second;
431    
432  }
433  
434  Serial.print  ("Months to end of year: ");
435  Serial.println (12-Month);
436  Serial.print  ("Year now: ");
437  Serial.println (tm.year);
438  Serial.print ("Time: ");
439  Serial.print (Hour);
440  Serial.print (Minute);
441  Serial.println (Second);
442  Serial.print ("Seconds to end of year: ");
443  sprintf(buf, "%.8ld", SecondsToEnd);
444  Serial.println (buf);
445  
446  u8g2.clearBuffer();
447  u8g2.setFont(u8g2_font_ncenB18_tr);
448
449  u8g2.drawStr(5,50, buf);
450  sprintf(buf, "Seconds To Year End");
451  u8g2.setFont(u8g2_font_ncenB08_tr);
452  u8g2.drawStr(0,10, buf);
453  u8g2.sendBuffer();
454  
455  delay(1000);
456}
457
458
459//  Display Ora a data
460void display()
461{
462  char buf[40];
463  char monthWord[40];
464  tm.getDateTime (WiFi.getTime());
465
466  u8g2.clearBuffer();
467  u8g2.setFont(u8g2_font_ncenB08_tr);
468
469  switch (tm.month)
470  {
471    case 1:
472    sprintf(monthWord,"January");
473    break;
474    case 2:
475    sprintf(monthWord,"February");
476    break;
477    case 3:
478    sprintf(monthWord,"March");
479    break;
480    case 4:
481    sprintf(monthWord,"April");
482    break;
483    case 5:
484    sprintf(monthWord,"May");
485    break;
486    case 6:
487    sprintf(monthWord,"June");
488    break;
489    case 7:
490    sprintf(monthWord,"July");
491    break;
492    case 8:
493    sprintf(monthWord,"August");
494    break;
495    case 9:
496    sprintf(monthWord,"September");
497    break;
498    case 10:
499    sprintf(monthWord,"October");
500    break;
501    case 11:
502    sprintf(monthWord,"November");
503    break;
504    case 12:
505    sprintf(monthWord,"December");
506    break;
507    default:
508    sprintf(monthWord,"Unknown");
509    break;
510  }
511  
512  sprintf(buf, "%.2d %s %d", tm.day, monthWord, tm.year);
513  Serial.print ("Date: ");
514  Serial.println(buf);
515  u8g2.drawStr(20,10,  buf);
516
517  switch (tm.dayOfWeek)
518  {
519    case 1:
520    sprintf(buf,"Monday");
521    break;
522    case 2:
523    sprintf(buf,"Tuesday");
524    break;
525    case  3:
526    sprintf(buf,"Wednesday");
527    break;
528    case 4:
529    sprintf(buf,"Thursday");
530    break;
531    case 5:
532    sprintf(buf,"Friday");
533    break;
534    case  6:
535    sprintf(buf,"Saturday");
536    break;
537    case 7:
538    sprintf(buf,"Sunday");
539    break;
540    default:
541    sprintf(buf,"Unknown");
542    break;
543  }
544  Serial.print ("Day of Week: ");
545  Serial.println(buf);
546  u8g2.drawStr(35,30,  buf);
547   
548  sprintf(buf, "%.2d:%.2d:%.2d", tm.hour, tm.minute, tm.second);
549  Serial.print ("Time: ");
550  Serial.println(buf);
551  u8g2.drawStr(35,50,  buf);   
552    
553  u8g2.sendBuffer();          
554 
555  delay(1000);
556
557}
558

// Sketch clock with Arduino and DF Robot Transparent Display 
// Carlo  Stramaglia
// 26 March 2022
// Youtube channel https://www.youtube.com/c/CarloStramaglia


#include  <Arduino.h>
#include <U8g2lib.h>
#include <WiFiNINA.h>
#include <UnixTime.h>
#include  "arduino_secrets.h"

#ifdef U8X8_HAVE_HW_SPI
#include <SPI.h>
#endif
#ifdef  U8X8_HAVE_HW_I2C
#include <Wire.h>
#endif

UnixTime tm (1);

int  Year;
int Month;
int Day;
int Hour;
int Minute;
int Second;
int  Status=0;
long SecondsToEnd;


U8G2_SSD1309_128X64_NONAME0_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 5, /* dc=*/ 7, /* reset=*/  6);

///////please enter your sensitive data in the Secret tab/arduino_secrets.h
char  ssid[] = SECRET_SSID;        // your network SSID (name)
char pass[] = SECRET_PASS;    // your network password (use for WPA, or use as key for WEP)
int keyIndex  = 0;            // your network key index number (needed only for WEP)

int  status = WL_IDLE_STATUS;

void printWifiStatus()
{
  // print the SSID  of the network you're attached to:
  Serial.print("SSID: ");
  Serial.println(WiFi.SSID());

  // print your board's IP address:
  IPAddress ip = WiFi.localIP();
  Serial.print("IP  Address: ");
  Serial.println(ip);

  // print the received signal strength:
  long rssi = WiFi.RSSI();
  Serial.print("Signal strength (RSSI):");
  Serial.print(rssi);
  Serial.println(" dBm");
}



void setup() {
  Serial.begin(115200);
  u8g2.begin();
  WiFi.begin(SECRET_SSID, SECRET_PASS);
  delay(1000);
  
  // attempt to connect to Wifi network:
  while (status != WL_CONNECTED)
  {    
    // Connect to WPA/WPA2 network. Change this line if using open or  WEP network:
    status = WiFi.status();
    delay(1000);
  }

  printWifiStatus();

}

void  loop() {

  int i;
  
  for (i=0; i< 20; i++)
    display();
  for (i=0; i< 20; i++)
    secondsToYear();
  for (i=0; i< 20; i++)
    secondsToMonth();
  for (i=0; i< 20; i++)
    secondsToDay();
}

//Display second to end  of day
void secondsToDay()
{
  char buf[40];
  tm.getDateTime (WiFi.getTime());
  Day = tm.day;
  Month = tm.month;
  Year = tm.year;
  Hour = tm.hour;
  Minute = tm.minute;
  Second = tm.second;
  
    SecondsToEnd = (long)(23-Hour)*60*60;
    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd  + (long)60-Second;      
    
  
  Serial.print ("Time: ");
  Serial.print  (Hour);
  Serial.print (Minute);
  Serial.println (Second);
  Serial.print  ("Seconds to end of day: ");
  sprintf(buf, "%.8ld", SecondsToEnd);
  Serial.println  (buf);

  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_ncenB18_tr);

  u8g2.drawStr(5,50, buf);
  sprintf(buf, "Seconds To Day End");
  u8g2.setFont(u8g2_font_ncenB08_tr);
  u8g2.drawStr(1,10, buf);
  u8g2.sendBuffer();

  delay(1000);
}

//  Display Seconds to end of the month
void secondsToMonth()
{
  char buf[40];
  tm.getDateTime (WiFi.getTime());
  Day = tm.day;
  Month = tm.month;
  Year = tm.year;
  Hour = tm.hour;
  Minute = tm.minute;
  Second = tm.second;
  
  if (Month == 1 or Month == 3 or Month == 5 or Month == 7 or Month == 8 or  Month == 10 or Month == 12)
  {
    Serial.print ("Days to end of month:  ");
    Serial.println (31-Day);
    if (Day != 31)
    {
      SecondsToEnd  = (long)(31-Day)*24*60*60;
      SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
    } 
    else
      SecondsToEnd = (long)(23-Hour)*60*60;
      
    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd  + (long)60-Second;      
    
  }
    
  else if (Month == 2)
  {
    Serial.print ("Days to end of month: ");
    Serial.println (27-Day);
    if (Day != 28)
    {
      SecondsToEnd = (long)(27-Day)*24*60*60;
      SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
    } 
    else
      SecondsToEnd = (long)(23-Hour)*60*60;
      
    SecondsToEnd = SecondsToEnd  + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd + (long)60-Second;
    
  }
  else if (Month == 4 or Month == 6 or Month == 9 or Month == 11)
  {
    Serial.print ("Days to end of month: ");
    Serial.println (29-Day);
    if (Day !=30)
    {
      SecondsToEnd = (long)(29-Day)*24*60*60;
      SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
    } 
    else
      SecondsToEnd = (long)(23-Hour)*60*60;
      
    SecondsToEnd = SecondsToEnd  + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd + (long)60-Second;
    
  }
  
  Serial.print ("Time: ");
  Serial.print (Hour);
  Serial.print (Minute);
  Serial.println (Second);
  Serial.print ("Seconds  to end of month: ");
  sprintf(buf, "%.8ld", SecondsToEnd);
  Serial.println  (buf);

  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_ncenB18_tr);

  u8g2.drawStr(5,50, buf);
  sprintf(buf, "Seconds To Month End");
  u8g2.setFont(u8g2_font_ncenB08_tr);
  u8g2.drawStr(0,10, buf);
  u8g2.sendBuffer();
  delay(1000);
}

//  Display Seconds to end of the year
void secondsToYear()
{
  char buf[40];
  tm.getDateTime (WiFi.getTime());
  Day = tm.day;
  Month = tm.month;
  Year = tm.year;
  Hour = tm.hour;
  Minute = tm.minute;
  Second = tm.second;
  
  if (Month == 1)
  {
    Serial.print ("Days to end of month: ");
    Serial.println (31-Day);
    if (Day != 31)
    {
      SecondsToEnd  = (long)(31-Day)*24*60*60; //da aggiungere
      SecondsToEnd = SecondsToEnd  + (long)28*24*60*60;
    }
    else 
      SecondsToEnd = (long)28*24*60*60;
      
    SecondsToEnd = SecondsToEnd + (long)6*31*24*60*60;
    SecondsToEnd  = SecondsToEnd + (long)4*30*24*60*60;
    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd  + (long)60-Second;
  }
    
  else if (Month == 2)
  {
    Serial.print  ("Days to end of month: ");
    Serial.println (27-Day);
    if (Day !=  28)
    {
      SecondsToEnd = (long)(27-Day)*24*60*60;
      SecondsToEnd  = SecondsToEnd + (long)6*31*24*60*60;
    }
    else
      SecondsToEnd  = (long)6*31*24*60*60;
 
    SecondsToEnd = SecondsToEnd + (long)4*30*24*60*60;
    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
    SecondsToEnd = SecondsToEnd  + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd + (long)60-Second;
    
  }
  else if (Month == 3)
  {
    Serial.print ("Days to end  of month: ");
    Serial.println (30-Day);
    if (Day != 31)
    {
      SecondsToEnd = (long)(30-Day)*24*60*60;
      SecondsToEnd = SecondsToEnd  + (long)5*31*24*60*60;
    }
    else
      SecondsToEnd = (long)5*31*24*60*60;
      
    SecondsToEnd = SecondsToEnd + (long)4*30*24*60*60;
    SecondsToEnd  = SecondsToEnd + (long)(23-Hour)*60*60;
    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd + (long)60-Second;
  
  }
  else if (Month  == 4)
  {
    Serial.print ("Days to end of month: ");
    Serial.println  (29-Day);
    if (Day != 30)
    {
      SecondsToEnd = (long)(24-Day)*24*60*60;
      SecondsToEnd = SecondsToEnd + (long)5*31*24*60*60;
    }
    else
      SecondsToEnd = (long)5*31*24*60*60;
      
    SecondsToEnd = SecondsToEnd  + (long)3*30*24*60*60;
    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd  + (long)60-Second;  
    
  }
  else if (Month == 5)
  {
    Serial.print  ("Days to end of month: ");
    Serial.println (30-Day);
    if (Day !=  31)
    {
      SecondsToEnd = (long)(30-Day)*24*60*60;
      SecondsToEnd  = SecondsToEnd + (long)4*31*24*60*60;
    }
    else
      SecondsToEnd  = (long)4*31*24*60*60;
    
    SecondsToEnd = SecondsToEnd + (long)3*30*24*60*60;
    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
    SecondsToEnd = SecondsToEnd  + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd + (long)60-Second;
  }
  else if (Month == 6)
  {
    Serial.print ("Days to end of month:  ");
    Serial.println (29-Day);
    if (Day !=30)
    {
      SecondsToEnd  = (long)(29-Day)*24*60*60;
      SecondsToEnd = SecondsToEnd + (long)4*31*24*60*60;
    }
    else
      SecondsToEnd = (long)4*31*24*60*60;
      
    SecondsToEnd  = SecondsToEnd + (long)2*30*24*60*60;
    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd  + (long)60-Second;
  }
  else if (Month == 7)
  {
    Serial.print ("Days  to end of month: ");
    Serial.println (30-Day);
    if (Day != 31)
    {
      SecondsToEnd = (long)(30-Day)*24*60*60;
      SecondsToEnd = SecondsToEnd  + (long)3*31*24*60*60;
    }
    else
      SecondsToEnd = (long)3*31*24*60*60;
      
    SecondsToEnd = SecondsToEnd + (long)2*30*24*60*60;
    SecondsToEnd  = SecondsToEnd + (long)(23-Hour)*60*60;
    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd + (long)60-Second;
  }
  else if (Month ==  8)
  {
    Serial.print ("Days to end of month: ");
    Serial.println  (30-Day);
    if (Day != 31)
    {
      SecondsToEnd = (long)(30-Day)*24*60*60;
      SecondsToEnd = SecondsToEnd + (long)2*31*24*60*60;
    }
    else
      SecondsToEnd = (long)2*31*24*60*60;
    
    SecondsToEnd = SecondsToEnd  + (long)2*30*24*60*60;
    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd  + (long)60-Second;
  }
  else if (Month == 9)
  {
    Serial.print ("Days  to end of month: ");
    Serial.println (29-Day);
    if (Day != 30)
    {
      SecondsToEnd = (long)(29-Day)*24*60*60;
      SecondsToEnd = SecondsToEnd  + (long)2*31*24*60*60;
    }
    else
      SecondsToEnd = (long)2*31*24*60*60;
      
    SecondsToEnd = SecondsToEnd + (long)1*30*24*60*60;
    SecondsToEnd  = SecondsToEnd + (long)(23-Hour)*60*60;
    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd + (long)60-Second;
    
  }
  else if (Month  == 10)
  {
    Serial.print ("Days to end of month: ");
    Serial.println  (30-Day);
    if (Day != 31)
    {
      SecondsToEnd = (long)(30-Day)*24*60*60;
      SecondsToEnd = SecondsToEnd + (long)1*31*24*60*60;
    }
    else
      SecondsToEnd = (long)1*31*24*60*60;
    
    SecondsToEnd = SecondsToEnd  + (long)1*30*24*60*60;
    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd  + (long)60-Second;
    
  }
  else if (Month == 11)
  {
    Serial.print  ("Days to end of month: ");
    Serial.println (29-Day);
    if (Day !=  30)
    {
      SecondsToEnd = (long)(29-Day)*24*60*60;
      SecondsToEnd  = SecondsToEnd + (long)1*31*24*60*60;
    }
    else
      SecondsToEnd  = (long)1*31*24*60*60;
      
    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd  + (long)60-Second;
    
  }
  else if (Month == 12)
  {
    Serial.print  ("Days to end of month: ");
    Serial.println (30-Day);
    if (Day !=  31)
    {
      SecondsToEnd = (long)(30-Day)*24*60*60;
      SecondsToEnd  = SecondsToEnd + (long)(23-Hour)*60*60;
    }
    else
      SecondsToEnd  = (long)(23-Hour)*60*60;
      
    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd + (long)60-Second;
    
  }
  
  Serial.print  ("Months to end of year: ");
  Serial.println (12-Month);
  Serial.print  ("Year now: ");
  Serial.println (tm.year);
  Serial.print ("Time: ");
  Serial.print (Hour);
  Serial.print (Minute);
  Serial.println (Second);
  Serial.print ("Seconds to end of year: ");
  sprintf(buf, "%.8ld", SecondsToEnd);
  Serial.println (buf);
  
  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_ncenB18_tr);

  u8g2.drawStr(5,50, buf);
  sprintf(buf, "Seconds To Year End");
  u8g2.setFont(u8g2_font_ncenB08_tr);
  u8g2.drawStr(0,10, buf);
  u8g2.sendBuffer();
  
  delay(1000);
}


//  Display Ora a data
void display()
{
  char buf[40];
  char monthWord[40];
  tm.getDateTime (WiFi.getTime());

  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_ncenB08_tr);

  switch (tm.month)
  {
    case 1:
    sprintf(monthWord,"January");
    break;
    case 2:
    sprintf(monthWord,"February");
    break;
    case 3:
    sprintf(monthWord,"March");
    break;
    case 4:
    sprintf(monthWord,"April");
    break;
    case 5:
    sprintf(monthWord,"May");
    break;
    case 6:
    sprintf(monthWord,"June");
    break;
    case 7:
    sprintf(monthWord,"July");
    break;
    case 8:
    sprintf(monthWord,"August");
    break;
    case 9:
    sprintf(monthWord,"September");
    break;
    case 10:
    sprintf(monthWord,"October");
    break;
    case 11:
    sprintf(monthWord,"November");
    break;
    case 12:
    sprintf(monthWord,"December");
    break;
    default:
    sprintf(monthWord,"Unknown");
    break;
  }
  
  sprintf(buf, "%.2d %s %d", tm.day, monthWord, tm.year);
  Serial.print ("Date: ");
  Serial.println(buf);
  u8g2.drawStr(20,10,  buf);

  switch (tm.dayOfWeek)
  {
    case 1:
    sprintf(buf,"Monday");
    break;
    case 2:
    sprintf(buf,"Tuesday");
    break;
    case  3:
    sprintf(buf,"Wednesday");
    break;
    case 4:
    sprintf(buf,"Thursday");
    break;
    case 5:
    sprintf(buf,"Friday");
    break;
    case  6:
    sprintf(buf,"Saturday");
    break;
    case 7:
    sprintf(buf,"Sunday");
    break;
    default:
    sprintf(buf,"Unknown");
    break;
  }
  Serial.print ("Day of Week: ");
  Serial.println(buf);
  u8g2.drawStr(35,30,  buf);
   
  sprintf(buf, "%.2d:%.2d:%.2d", tm.hour, tm.minute, tm.second);
  Serial.print ("Time: ");
  Serial.println(buf);
  u8g2.drawStr(35,50,  buf);   
    
  u8g2.sendBuffer();          
 
  delay(1000);

}

Nice Display Clock

arduino

1// Sketch clock with Arduino and DF Robot Transparent Display 
2// Carlo
3  Stramaglia
4// 26 March 2022
5// Youtube channel https://www.youtube.com/c/CarloStramaglia
6
7
8#include
9  <Arduino.h>
10#include <U8g2lib.h>
11#include <WiFiNINA.h>
12#include <UnixTime.h>
13#include
14  "arduino_secrets.h"
15
16#ifdef U8X8_HAVE_HW_SPI
17#include <SPI.h>
18#endif
19#ifdef
20  U8X8_HAVE_HW_I2C
21#include <Wire.h>
22#endif
23
24UnixTime tm (1);
25
26int
27  Year;
28int Month;
29int Day;
30int Hour;
31int Minute;
32int Second;
33int
34  Status=0;
35long SecondsToEnd;
36
37
38U8G2_SSD1309_128X64_NONAME0_F_4W_SW_SPI
39  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 5, /* dc=*/ 7, /* reset=*/
40  6);
41
42///////please enter your sensitive data in the Secret tab/arduino_secrets.h
43char
44  ssid[] = SECRET_SSID;        // your network SSID (name)
45char pass[] = SECRET_PASS;
46    // your network password (use for WPA, or use as key for WEP)
47int keyIndex
48  = 0;            // your network key index number (needed only for WEP)
49
50int
51  status = WL_IDLE_STATUS;
52
53void printWifiStatus()
54{
55  // print the SSID
56  of the network you're attached to:
57  Serial.print("SSID: ");
58  Serial.println(WiFi.SSID());
59
60
61  // print your board's IP address:
62  IPAddress ip = WiFi.localIP();
63  Serial.print("IP
64  Address: ");
65  Serial.println(ip);
66
67  // print the received signal strength:
68
69  long rssi = WiFi.RSSI();
70  Serial.print("Signal strength (RSSI):");
71  Serial.print(rssi);
72
73  Serial.println(" dBm");
74}
75
76
77
78void setup() {
79  Serial.begin(115200);
80
81  u8g2.begin();
82  WiFi.begin(SECRET_SSID, SECRET_PASS);
83  delay(1000);
84
85  
86  // attempt to connect to Wifi network:
87  while (status != WL_CONNECTED)
88
89  {    
90    // Connect to WPA/WPA2 network. Change this line if using open or
91  WEP network:
92    status = WiFi.status();
93    delay(1000);
94  }
95
96  printWifiStatus();
97
98}
99
100void
101  loop() {
102
103  int i;
104  
105  for (i=0; i< 20; i++)
106    display();
107
108  for (i=0; i< 20; i++)
109    secondsToYear();
110  for (i=0; i< 20; i++)
111    secondsToMonth();
112
113  for (i=0; i< 20; i++)
114    secondsToDay();
115}
116
117//Display second to end
118  of day
119void secondsToDay()
120{
121  char buf[40];
122  tm.getDateTime (WiFi.getTime());
123
124  Day = tm.day;
125  Month = tm.month;
126  Year = tm.year;
127  Hour = tm.hour;
128
129  Minute = tm.minute;
130  Second = tm.second;
131  
132    SecondsToEnd = (long)(23-Hour)*60*60;
133
134    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
135    SecondsToEnd = SecondsToEnd
136  + (long)60-Second;      
137    
138  
139  Serial.print ("Time: ");
140  Serial.print
141  (Hour);
142  Serial.print (Minute);
143  Serial.println (Second);
144  Serial.print
145  ("Seconds to end of day: ");
146  sprintf(buf, "%.8ld", SecondsToEnd);
147  Serial.println
148  (buf);
149
150  u8g2.clearBuffer();
151  u8g2.setFont(u8g2_font_ncenB18_tr);
152
153
154  u8g2.drawStr(5,50, buf);
155  sprintf(buf, "Seconds To Day End");
156  u8g2.setFont(u8g2_font_ncenB08_tr);
157
158  u8g2.drawStr(1,10, buf);
159  u8g2.sendBuffer();
160
161  delay(1000);
162}
163
164//
165  Display Seconds to end of the month
166void secondsToMonth()
167{
168  char buf[40];
169
170  tm.getDateTime (WiFi.getTime());
171  Day = tm.day;
172  Month = tm.month;
173
174  Year = tm.year;
175  Hour = tm.hour;
176  Minute = tm.minute;
177  Second = tm.second;
178
179  
180  if (Month == 1 or Month == 3 or Month == 5 or Month == 7 or Month == 8 or
181  Month == 10 or Month == 12)
182  {
183    Serial.print ("Days to end of month:
184  ");
185    Serial.println (31-Day);
186    if (Day != 31)
187    {
188      SecondsToEnd
189  = (long)(31-Day)*24*60*60;
190      SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
191
192    } 
193    else
194      SecondsToEnd = (long)(23-Hour)*60*60;
195      
196
197    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
198    SecondsToEnd = SecondsToEnd
199  + (long)60-Second;      
200    
201  }
202    
203  else if (Month == 2)
204  {
205
206    Serial.print ("Days to end of month: ");
207    Serial.println (27-Day);
208
209    if (Day != 28)
210    {
211      SecondsToEnd = (long)(27-Day)*24*60*60;
212
213      SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
214    } 
215    else
216
217      SecondsToEnd = (long)(23-Hour)*60*60;
218      
219    SecondsToEnd = SecondsToEnd
220  + (long)(59-Minute)*60;
221    SecondsToEnd = SecondsToEnd + (long)60-Second;
222
223    
224  }
225  else if (Month == 4 or Month == 6 or Month == 9 or Month == 11)
226
227  {
228    Serial.print ("Days to end of month: ");
229    Serial.println (29-Day);
230
231    if (Day !=30)
232    {
233      SecondsToEnd = (long)(29-Day)*24*60*60;
234
235      SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
236    } 
237    else
238
239      SecondsToEnd = (long)(23-Hour)*60*60;
240      
241    SecondsToEnd = SecondsToEnd
242  + (long)(59-Minute)*60;
243    SecondsToEnd = SecondsToEnd + (long)60-Second;
244
245    
246  }
247  
248  Serial.print ("Time: ");
249  Serial.print (Hour);
250
251  Serial.print (Minute);
252  Serial.println (Second);
253  Serial.print ("Seconds
254  to end of month: ");
255  sprintf(buf, "%.8ld", SecondsToEnd);
256  Serial.println
257  (buf);
258
259  u8g2.clearBuffer();
260  u8g2.setFont(u8g2_font_ncenB18_tr);
261
262
263  u8g2.drawStr(5,50, buf);
264  sprintf(buf, "Seconds To Month End");
265  u8g2.setFont(u8g2_font_ncenB08_tr);
266
267  u8g2.drawStr(0,10, buf);
268  u8g2.sendBuffer();
269  delay(1000);
270}
271
272//
273  Display Seconds to end of the year
274void secondsToYear()
275{
276  char buf[40];
277
278  tm.getDateTime (WiFi.getTime());
279  Day = tm.day;
280  Month = tm.month;
281
282  Year = tm.year;
283  Hour = tm.hour;
284  Minute = tm.minute;
285  Second = tm.second;
286
287  
288  if (Month == 1)
289  {
290    Serial.print ("Days to end of month: ");
291
292    Serial.println (31-Day);
293    if (Day != 31)
294    {
295      SecondsToEnd
296  = (long)(31-Day)*24*60*60; //da aggiungere
297      SecondsToEnd = SecondsToEnd
298  + (long)28*24*60*60;
299    }
300    else 
301      SecondsToEnd = (long)28*24*60*60;
302
303      
304    SecondsToEnd = SecondsToEnd + (long)6*31*24*60*60;
305    SecondsToEnd
306  = SecondsToEnd + (long)4*30*24*60*60;
307    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
308
309    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
310    SecondsToEnd = SecondsToEnd
311  + (long)60-Second;
312  }
313    
314  else if (Month == 2)
315  {
316    Serial.print
317  ("Days to end of month: ");
318    Serial.println (27-Day);
319    if (Day !=
320  28)
321    {
322      SecondsToEnd = (long)(27-Day)*24*60*60;
323      SecondsToEnd
324  = SecondsToEnd + (long)6*31*24*60*60;
325    }
326    else
327      SecondsToEnd
328  = (long)6*31*24*60*60;
329 
330    SecondsToEnd = SecondsToEnd + (long)4*30*24*60*60;
331
332    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
333    SecondsToEnd = SecondsToEnd
334  + (long)(59-Minute)*60;
335    SecondsToEnd = SecondsToEnd + (long)60-Second;
336
337    
338  }
339  else if (Month == 3)
340  {
341    Serial.print ("Days to end
342  of month: ");
343    Serial.println (30-Day);
344    if (Day != 31)
345    {
346
347      SecondsToEnd = (long)(30-Day)*24*60*60;
348      SecondsToEnd = SecondsToEnd
349  + (long)5*31*24*60*60;
350    }
351    else
352      SecondsToEnd = (long)5*31*24*60*60;
353
354      
355    SecondsToEnd = SecondsToEnd + (long)4*30*24*60*60;
356    SecondsToEnd
357  = SecondsToEnd + (long)(23-Hour)*60*60;
358    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
359
360    SecondsToEnd = SecondsToEnd + (long)60-Second;
361  
362  }
363  else if (Month
364  == 4)
365  {
366    Serial.print ("Days to end of month: ");
367    Serial.println
368  (29-Day);
369    if (Day != 30)
370    {
371      SecondsToEnd = (long)(24-Day)*24*60*60;
372
373      SecondsToEnd = SecondsToEnd + (long)5*31*24*60*60;
374    }
375    else
376
377      SecondsToEnd = (long)5*31*24*60*60;
378      
379    SecondsToEnd = SecondsToEnd
380  + (long)3*30*24*60*60;
381    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
382
383    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
384    SecondsToEnd = SecondsToEnd
385  + (long)60-Second;  
386    
387  }
388  else if (Month == 5)
389  {
390    Serial.print
391  ("Days to end of month: ");
392    Serial.println (30-Day);
393    if (Day !=
394  31)
395    {
396      SecondsToEnd = (long)(30-Day)*24*60*60;
397      SecondsToEnd
398  = SecondsToEnd + (long)4*31*24*60*60;
399    }
400    else
401      SecondsToEnd
402  = (long)4*31*24*60*60;
403    
404    SecondsToEnd = SecondsToEnd + (long)3*30*24*60*60;
405
406    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
407    SecondsToEnd = SecondsToEnd
408  + (long)(59-Minute)*60;
409    SecondsToEnd = SecondsToEnd + (long)60-Second;
410
411  }
412  else if (Month == 6)
413  {
414    Serial.print ("Days to end of month:
415  ");
416    Serial.println (29-Day);
417    if (Day !=30)
418    {
419      SecondsToEnd
420  = (long)(29-Day)*24*60*60;
421      SecondsToEnd = SecondsToEnd + (long)4*31*24*60*60;
422
423    }
424    else
425      SecondsToEnd = (long)4*31*24*60*60;
426      
427    SecondsToEnd
428  = SecondsToEnd + (long)2*30*24*60*60;
429    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
430
431    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
432    SecondsToEnd = SecondsToEnd
433  + (long)60-Second;
434  }
435  else if (Month == 7)
436  {
437    Serial.print ("Days
438  to end of month: ");
439    Serial.println (30-Day);
440    if (Day != 31)
441
442    {
443      SecondsToEnd = (long)(30-Day)*24*60*60;
444      SecondsToEnd = SecondsToEnd
445  + (long)3*31*24*60*60;
446    }
447    else
448      SecondsToEnd = (long)3*31*24*60*60;
449
450      
451    SecondsToEnd = SecondsToEnd + (long)2*30*24*60*60;
452    SecondsToEnd
453  = SecondsToEnd + (long)(23-Hour)*60*60;
454    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
455
456    SecondsToEnd = SecondsToEnd + (long)60-Second;
457  }
458  else if (Month ==
459  8)
460  {
461    Serial.print ("Days to end of month: ");
462    Serial.println
463  (30-Day);
464    if (Day != 31)
465    {
466      SecondsToEnd = (long)(30-Day)*24*60*60;
467
468      SecondsToEnd = SecondsToEnd + (long)2*31*24*60*60;
469    }
470    else
471
472      SecondsToEnd = (long)2*31*24*60*60;
473    
474    SecondsToEnd = SecondsToEnd
475  + (long)2*30*24*60*60;
476    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
477
478    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
479    SecondsToEnd = SecondsToEnd
480  + (long)60-Second;
481  }
482  else if (Month == 9)
483  {
484    Serial.print ("Days
485  to end of month: ");
486    Serial.println (29-Day);
487    if (Day != 30)
488
489    {
490      SecondsToEnd = (long)(29-Day)*24*60*60;
491      SecondsToEnd = SecondsToEnd
492  + (long)2*31*24*60*60;
493    }
494    else
495      SecondsToEnd = (long)2*31*24*60*60;
496
497      
498    SecondsToEnd = SecondsToEnd + (long)1*30*24*60*60;
499    SecondsToEnd
500  = SecondsToEnd + (long)(23-Hour)*60*60;
501    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
502
503    SecondsToEnd = SecondsToEnd + (long)60-Second;
504    
505  }
506  else if (Month
507  == 10)
508  {
509    Serial.print ("Days to end of month: ");
510    Serial.println
511  (30-Day);
512    if (Day != 31)
513    {
514      SecondsToEnd = (long)(30-Day)*24*60*60;
515
516      SecondsToEnd = SecondsToEnd + (long)1*31*24*60*60;
517    }
518    else
519
520      SecondsToEnd = (long)1*31*24*60*60;
521    
522    SecondsToEnd = SecondsToEnd
523  + (long)1*30*24*60*60;
524    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
525
526    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
527    SecondsToEnd = SecondsToEnd
528  + (long)60-Second;
529    
530  }
531  else if (Month == 11)
532  {
533    Serial.print
534  ("Days to end of month: ");
535    Serial.println (29-Day);
536    if (Day !=
537  30)
538    {
539      SecondsToEnd = (long)(29-Day)*24*60*60;
540      SecondsToEnd
541  = SecondsToEnd + (long)1*31*24*60*60;
542    }
543    else
544      SecondsToEnd
545  = (long)1*31*24*60*60;
546      
547    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
548
549    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
550    SecondsToEnd = SecondsToEnd
551  + (long)60-Second;
552    
553  }
554  else if (Month == 12)
555  {
556    Serial.print
557  ("Days to end of month: ");
558    Serial.println (30-Day);
559    if (Day !=
560  31)
561    {
562      SecondsToEnd = (long)(30-Day)*24*60*60;
563      SecondsToEnd
564  = SecondsToEnd + (long)(23-Hour)*60*60;
565    }
566    else
567      SecondsToEnd
568  = (long)(23-Hour)*60*60;
569      
570    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
571
572    SecondsToEnd = SecondsToEnd + (long)60-Second;
573    
574  }
575  
576  Serial.print
577  ("Months to end of year: ");
578  Serial.println (12-Month);
579  Serial.print
580  ("Year now: ");
581  Serial.println (tm.year);
582  Serial.print ("Time: ");
583
584  Serial.print (Hour);
585  Serial.print (Minute);
586  Serial.println (Second);
587
588  Serial.print ("Seconds to end of year: ");
589  sprintf(buf, "%.8ld", SecondsToEnd);
590
591  Serial.println (buf);
592  
593  u8g2.clearBuffer();
594  u8g2.setFont(u8g2_font_ncenB18_tr);
595
596
597  u8g2.drawStr(5,50, buf);
598  sprintf(buf, "Seconds To Year End");
599  u8g2.setFont(u8g2_font_ncenB08_tr);
600
601  u8g2.drawStr(0,10, buf);
602  u8g2.sendBuffer();
603  
604  delay(1000);
605}
606
607
608//
609  Display Ora a data
610void display()
611{
612  char buf[40];
613  char monthWord[40];
614
615  tm.getDateTime (WiFi.getTime());
616
617  u8g2.clearBuffer();
618  u8g2.setFont(u8g2_font_ncenB08_tr);
619
620
621  switch (tm.month)
622  {
623    case 1:
624    sprintf(monthWord,"January");
625
626    break;
627    case 2:
628    sprintf(monthWord,"February");
629    break;
630
631    case 3:
632    sprintf(monthWord,"March");
633    break;
634    case 4:
635
636    sprintf(monthWord,"April");
637    break;
638    case 5:
639    sprintf(monthWord,"May");
640
641    break;
642    case 6:
643    sprintf(monthWord,"June");
644    break;
645
646    case 7:
647    sprintf(monthWord,"July");
648    break;
649    case 8:
650
651    sprintf(monthWord,"August");
652    break;
653    case 9:
654    sprintf(monthWord,"September");
655
656    break;
657    case 10:
658    sprintf(monthWord,"October");
659    break;
660
661    case 11:
662    sprintf(monthWord,"November");
663    break;
664    case 12:
665
666    sprintf(monthWord,"December");
667    break;
668    default:
669    sprintf(monthWord,"Unknown");
670
671    break;
672  }
673  
674  sprintf(buf, "%.2d %s %d", tm.day, monthWord, tm.year);
675
676  Serial.print ("Date: ");
677  Serial.println(buf);
678  u8g2.drawStr(20,10,
679  buf);
680
681  switch (tm.dayOfWeek)
682  {
683    case 1:
684    sprintf(buf,"Monday");
685
686    break;
687    case 2:
688    sprintf(buf,"Tuesday");
689    break;
690    case
691  3:
692    sprintf(buf,"Wednesday");
693    break;
694    case 4:
695    sprintf(buf,"Thursday");
696
697    break;
698    case 5:
699    sprintf(buf,"Friday");
700    break;
701    case
702  6:
703    sprintf(buf,"Saturday");
704    break;
705    case 7:
706    sprintf(buf,"Sunday");
707
708    break;
709    default:
710    sprintf(buf,"Unknown");
711    break;
712  }
713
714  Serial.print ("Day of Week: ");
715  Serial.println(buf);
716  u8g2.drawStr(35,30,
717  buf);
718   
719  sprintf(buf, "%.2d:%.2d:%.2d", tm.hour, tm.minute, tm.second);
720
721  Serial.print ("Time: ");
722  Serial.println(buf);
723  u8g2.drawStr(35,50,
724  buf);   
725    
726  u8g2.sendBuffer();          
727 
728  delay(1000);
729
730}
731

// Sketch clock with Arduino and DF Robot Transparent Display 
// Carlo
  Stramaglia
// 26 March 2022
// Youtube channel https://www.youtube.com/c/CarloStramaglia


#include
  <Arduino.h>
#include <U8g2lib.h>
#include <WiFiNINA.h>
#include <UnixTime.h>
#include
  "arduino_secrets.h"

#ifdef U8X8_HAVE_HW_SPI
#include <SPI.h>
#endif
#ifdef
  U8X8_HAVE_HW_I2C
#include <Wire.h>
#endif

UnixTime tm (1);

int
  Year;
int Month;
int Day;
int Hour;
int Minute;
int Second;
int
  Status=0;
long SecondsToEnd;


U8G2_SSD1309_128X64_NONAME0_F_4W_SW_SPI
  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 5, /* dc=*/ 7, /* reset=*/
  6);

///////please enter your sensitive data in the Secret tab/arduino_secrets.h
char
  ssid[] = SECRET_SSID;        // your network SSID (name)
char pass[] = SECRET_PASS;
    // your network password (use for WPA, or use as key for WEP)
int keyIndex
  = 0;            // your network key index number (needed only for WEP)

int
  status = WL_IDLE_STATUS;

void printWifiStatus()
{
  // print the SSID
  of the network you're attached to:
  Serial.print("SSID: ");
  Serial.println(WiFi.SSID());


  // print your board's IP address:
  IPAddress ip = WiFi.localIP();
  Serial.print("IP
  Address: ");
  Serial.println(ip);

  // print the received signal strength:

  long rssi = WiFi.RSSI();
  Serial.print("Signal strength (RSSI):");
  Serial.print(rssi);

  Serial.println(" dBm");
}



void setup() {
  Serial.begin(115200);

  u8g2.begin();
  WiFi.begin(SECRET_SSID, SECRET_PASS);
  delay(1000);

  
  // attempt to connect to Wifi network:
  while (status != WL_CONNECTED)

  {    
    // Connect to WPA/WPA2 network. Change this line if using open or
  WEP network:
    status = WiFi.status();
    delay(1000);
  }

  printWifiStatus();

}

void
  loop() {

  int i;
  
  for (i=0; i< 20; i++)
    display();

  for (i=0; i< 20; i++)
    secondsToYear();
  for (i=0; i< 20; i++)
    secondsToMonth();

  for (i=0; i< 20; i++)
    secondsToDay();
}

//Display second to end
  of day
void secondsToDay()
{
  char buf[40];
  tm.getDateTime (WiFi.getTime());

  Day = tm.day;
  Month = tm.month;
  Year = tm.year;
  Hour = tm.hour;

  Minute = tm.minute;
  Second = tm.second;
  
    SecondsToEnd = (long)(23-Hour)*60*60;

    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd
  + (long)60-Second;      
    
  
  Serial.print ("Time: ");
  Serial.print
  (Hour);
  Serial.print (Minute);
  Serial.println (Second);
  Serial.print
  ("Seconds to end of day: ");
  sprintf(buf, "%.8ld", SecondsToEnd);
  Serial.println
  (buf);

  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_ncenB18_tr);


  u8g2.drawStr(5,50, buf);
  sprintf(buf, "Seconds To Day End");
  u8g2.setFont(u8g2_font_ncenB08_tr);

  u8g2.drawStr(1,10, buf);
  u8g2.sendBuffer();

  delay(1000);
}

//
  Display Seconds to end of the month
void secondsToMonth()
{
  char buf[40];

  tm.getDateTime (WiFi.getTime());
  Day = tm.day;
  Month = tm.month;

  Year = tm.year;
  Hour = tm.hour;
  Minute = tm.minute;
  Second = tm.second;

  
  if (Month == 1 or Month == 3 or Month == 5 or Month == 7 or Month == 8 or
  Month == 10 or Month == 12)
  {
    Serial.print ("Days to end of month:
  ");
    Serial.println (31-Day);
    if (Day != 31)
    {
      SecondsToEnd
  = (long)(31-Day)*24*60*60;
      SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;

    } 
    else
      SecondsToEnd = (long)(23-Hour)*60*60;
      

    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd
  + (long)60-Second;      
    
  }
    
  else if (Month == 2)
  {

    Serial.print ("Days to end of month: ");
    Serial.println (27-Day);

    if (Day != 28)
    {
      SecondsToEnd = (long)(27-Day)*24*60*60;

      SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
    } 
    else

      SecondsToEnd = (long)(23-Hour)*60*60;
      
    SecondsToEnd = SecondsToEnd
  + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd + (long)60-Second;

    
  }
  else if (Month == 4 or Month == 6 or Month == 9 or Month == 11)

  {
    Serial.print ("Days to end of month: ");
    Serial.println (29-Day);

    if (Day !=30)
    {
      SecondsToEnd = (long)(29-Day)*24*60*60;

      SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
    } 
    else

      SecondsToEnd = (long)(23-Hour)*60*60;
      
    SecondsToEnd = SecondsToEnd
  + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd + (long)60-Second;

    
  }
  
  Serial.print ("Time: ");
  Serial.print (Hour);

  Serial.print (Minute);
  Serial.println (Second);
  Serial.print ("Seconds
  to end of month: ");
  sprintf(buf, "%.8ld", SecondsToEnd);
  Serial.println
  (buf);

  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_ncenB18_tr);


  u8g2.drawStr(5,50, buf);
  sprintf(buf, "Seconds To Month End");
  u8g2.setFont(u8g2_font_ncenB08_tr);

  u8g2.drawStr(0,10, buf);
  u8g2.sendBuffer();
  delay(1000);
}

//
  Display Seconds to end of the year
void secondsToYear()
{
  char buf[40];

  tm.getDateTime (WiFi.getTime());
  Day = tm.day;
  Month = tm.month;

  Year = tm.year;
  Hour = tm.hour;
  Minute = tm.minute;
  Second = tm.second;

  
  if (Month == 1)
  {
    Serial.print ("Days to end of month: ");

    Serial.println (31-Day);
    if (Day != 31)
    {
      SecondsToEnd
  = (long)(31-Day)*24*60*60; //da aggiungere
      SecondsToEnd = SecondsToEnd
  + (long)28*24*60*60;
    }
    else 
      SecondsToEnd = (long)28*24*60*60;

      
    SecondsToEnd = SecondsToEnd + (long)6*31*24*60*60;
    SecondsToEnd
  = SecondsToEnd + (long)4*30*24*60*60;
    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;

    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd
  + (long)60-Second;
  }
    
  else if (Month == 2)
  {
    Serial.print
  ("Days to end of month: ");
    Serial.println (27-Day);
    if (Day !=
  28)
    {
      SecondsToEnd = (long)(27-Day)*24*60*60;
      SecondsToEnd
  = SecondsToEnd + (long)6*31*24*60*60;
    }
    else
      SecondsToEnd
  = (long)6*31*24*60*60;
 
    SecondsToEnd = SecondsToEnd + (long)4*30*24*60*60;

    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
    SecondsToEnd = SecondsToEnd
  + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd + (long)60-Second;

    
  }
  else if (Month == 3)
  {
    Serial.print ("Days to end
  of month: ");
    Serial.println (30-Day);
    if (Day != 31)
    {

      SecondsToEnd = (long)(30-Day)*24*60*60;
      SecondsToEnd = SecondsToEnd
  + (long)5*31*24*60*60;
    }
    else
      SecondsToEnd = (long)5*31*24*60*60;

      
    SecondsToEnd = SecondsToEnd + (long)4*30*24*60*60;
    SecondsToEnd
  = SecondsToEnd + (long)(23-Hour)*60*60;
    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;

    SecondsToEnd = SecondsToEnd + (long)60-Second;
  
  }
  else if (Month
  == 4)
  {
    Serial.print ("Days to end of month: ");
    Serial.println
  (29-Day);
    if (Day != 30)
    {
      SecondsToEnd = (long)(24-Day)*24*60*60;

      SecondsToEnd = SecondsToEnd + (long)5*31*24*60*60;
    }
    else

      SecondsToEnd = (long)5*31*24*60*60;
      
    SecondsToEnd = SecondsToEnd
  + (long)3*30*24*60*60;
    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;

    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd
  + (long)60-Second;  
    
  }
  else if (Month == 5)
  {
    Serial.print
  ("Days to end of month: ");
    Serial.println (30-Day);
    if (Day !=
  31)
    {
      SecondsToEnd = (long)(30-Day)*24*60*60;
      SecondsToEnd
  = SecondsToEnd + (long)4*31*24*60*60;
    }
    else
      SecondsToEnd
  = (long)4*31*24*60*60;
    
    SecondsToEnd = SecondsToEnd + (long)3*30*24*60*60;

    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;
    SecondsToEnd = SecondsToEnd
  + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd + (long)60-Second;

  }
  else if (Month == 6)
  {
    Serial.print ("Days to end of month:
  ");
    Serial.println (29-Day);
    if (Day !=30)
    {
      SecondsToEnd
  = (long)(29-Day)*24*60*60;
      SecondsToEnd = SecondsToEnd + (long)4*31*24*60*60;

    }
    else
      SecondsToEnd = (long)4*31*24*60*60;
      
    SecondsToEnd
  = SecondsToEnd + (long)2*30*24*60*60;
    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;

    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd
  + (long)60-Second;
  }
  else if (Month == 7)
  {
    Serial.print ("Days
  to end of month: ");
    Serial.println (30-Day);
    if (Day != 31)

    {
      SecondsToEnd = (long)(30-Day)*24*60*60;
      SecondsToEnd = SecondsToEnd
  + (long)3*31*24*60*60;
    }
    else
      SecondsToEnd = (long)3*31*24*60*60;

      
    SecondsToEnd = SecondsToEnd + (long)2*30*24*60*60;
    SecondsToEnd
  = SecondsToEnd + (long)(23-Hour)*60*60;
    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;

    SecondsToEnd = SecondsToEnd + (long)60-Second;
  }
  else if (Month ==
  8)
  {
    Serial.print ("Days to end of month: ");
    Serial.println
  (30-Day);
    if (Day != 31)
    {
      SecondsToEnd = (long)(30-Day)*24*60*60;

      SecondsToEnd = SecondsToEnd + (long)2*31*24*60*60;
    }
    else

      SecondsToEnd = (long)2*31*24*60*60;
    
    SecondsToEnd = SecondsToEnd
  + (long)2*30*24*60*60;
    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;

    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd
  + (long)60-Second;
  }
  else if (Month == 9)
  {
    Serial.print ("Days
  to end of month: ");
    Serial.println (29-Day);
    if (Day != 30)

    {
      SecondsToEnd = (long)(29-Day)*24*60*60;
      SecondsToEnd = SecondsToEnd
  + (long)2*31*24*60*60;
    }
    else
      SecondsToEnd = (long)2*31*24*60*60;

      
    SecondsToEnd = SecondsToEnd + (long)1*30*24*60*60;
    SecondsToEnd
  = SecondsToEnd + (long)(23-Hour)*60*60;
    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;

    SecondsToEnd = SecondsToEnd + (long)60-Second;
    
  }
  else if (Month
  == 10)
  {
    Serial.print ("Days to end of month: ");
    Serial.println
  (30-Day);
    if (Day != 31)
    {
      SecondsToEnd = (long)(30-Day)*24*60*60;

      SecondsToEnd = SecondsToEnd + (long)1*31*24*60*60;
    }
    else

      SecondsToEnd = (long)1*31*24*60*60;
    
    SecondsToEnd = SecondsToEnd
  + (long)1*30*24*60*60;
    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;

    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd
  + (long)60-Second;
    
  }
  else if (Month == 11)
  {
    Serial.print
  ("Days to end of month: ");
    Serial.println (29-Day);
    if (Day !=
  30)
    {
      SecondsToEnd = (long)(29-Day)*24*60*60;
      SecondsToEnd
  = SecondsToEnd + (long)1*31*24*60*60;
    }
    else
      SecondsToEnd
  = (long)1*31*24*60*60;
      
    SecondsToEnd = SecondsToEnd + (long)(23-Hour)*60*60;

    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;
    SecondsToEnd = SecondsToEnd
  + (long)60-Second;
    
  }
  else if (Month == 12)
  {
    Serial.print
  ("Days to end of month: ");
    Serial.println (30-Day);
    if (Day !=
  31)
    {
      SecondsToEnd = (long)(30-Day)*24*60*60;
      SecondsToEnd
  = SecondsToEnd + (long)(23-Hour)*60*60;
    }
    else
      SecondsToEnd
  = (long)(23-Hour)*60*60;
      
    SecondsToEnd = SecondsToEnd + (long)(59-Minute)*60;

    SecondsToEnd = SecondsToEnd + (long)60-Second;
    
  }
  
  Serial.print
  ("Months to end of year: ");
  Serial.println (12-Month);
  Serial.print
  ("Year now: ");
  Serial.println (tm.year);
  Serial.print ("Time: ");

  Serial.print (Hour);
  Serial.print (Minute);
  Serial.println (Second);

  Serial.print ("Seconds to end of year: ");
  sprintf(buf, "%.8ld", SecondsToEnd);

  Serial.println (buf);
  
  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_ncenB18_tr);


  u8g2.drawStr(5,50, buf);
  sprintf(buf, "Seconds To Year End");
  u8g2.setFont(u8g2_font_ncenB08_tr);

  u8g2.drawStr(0,10, buf);
  u8g2.sendBuffer();
  
  delay(1000);
}


//
  Display Ora a data
void display()
{
  char buf[40];
  char monthWord[40];

  tm.getDateTime (WiFi.getTime());

  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_ncenB08_tr);


  switch (tm.month)
  {
    case 1:
    sprintf(monthWord,"January");

    break;
    case 2:
    sprintf(monthWord,"February");
    break;

    case 3:
    sprintf(monthWord,"March");
    break;
    case 4:

    sprintf(monthWord,"April");
    break;
    case 5:
    sprintf(monthWord,"May");

    break;
    case 6:
    sprintf(monthWord,"June");
    break;

    case 7:
    sprintf(monthWord,"July");
    break;
    case 8:

    sprintf(monthWord,"August");
    break;
    case 9:
    sprintf(monthWord,"September");

    break;
    case 10:
    sprintf(monthWord,"October");
    break;

    case 11:
    sprintf(monthWord,"November");
    break;
    case 12:

    sprintf(monthWord,"December");
    break;
    default:
    sprintf(monthWord,"Unknown");

    break;
  }
  
  sprintf(buf, "%.2d %s %d", tm.day, monthWord, tm.year);

  Serial.print ("Date: ");
  Serial.println(buf);
  u8g2.drawStr(20,10,
  buf);

  switch (tm.dayOfWeek)
  {
    case 1:
    sprintf(buf,"Monday");

    break;
    case 2:
    sprintf(buf,"Tuesday");
    break;
    case
  3:
    sprintf(buf,"Wednesday");
    break;
    case 4:
    sprintf(buf,"Thursday");

    break;
    case 5:
    sprintf(buf,"Friday");
    break;
    case
  6:
    sprintf(buf,"Saturday");
    break;
    case 7:
    sprintf(buf,"Sunday");

    break;
    default:
    sprintf(buf,"Unknown");
    break;
  }

  Serial.print ("Day of Week: ");
  Serial.println(buf);
  u8g2.drawStr(35,30,
  buf);
   
  sprintf(buf, "%.2d:%.2d:%.2d", tm.hour, tm.minute, tm.second);

  Serial.print ("Time: ");
  Serial.println(buf);
  u8g2.drawStr(35,50,
  buf);   
    
  u8g2.sendBuffer();          
 
  delay(1000);

}

Downloadable files

Diagram

Comments

Only logged in users can leave comments

cstram

0 Followers

•

0 Projects

Intro