Internet OLED Clock

1//Self Adjusting OLED Clock 
2//by Shubham Santosh
3
4
5#include<ESP8266WiFi.h>
6#include<NTPClient.h>
7#include<WiFiUdp.h>
8#include<SPI.h>
9#include<Adafruit_SSD1306.h>
10#include<Adafruit_GFX.h>
11#include<Wire.h>
12
13#define  utcoffset 19800   // adds 19800 seconds = 5hr and 30 mins
14
15Adafruit_SSD1306  display(128,64,&Wire,-1);
16WiFiUDP ntp;
17NTPClient timeclient(ntp,"asia.pool.ntp.org",utcoffset);
18
19const  char *ssid= " Enter SSID";               // enter SSID of your WiFi router
20const  char *password= "Enter Password";        // enter password of the router
21
22
23String  Week[7] = {"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"};
24
25void  setup() {
26  Serial.begin(115200);
27  WiFi.begin(ssid,password);
28  display.begin(SSD1306_SWITCHCAPVCC,0x3C);
29  /*if(!(display.begin(SSD1306_SWITCHCAPVCC,0x3C)))
30  {
31    Serial.println("Connection  Error");
32    while (true)
33    {continue;}
34  }
35  */
36  delay(1000);
37
38  // animation
39display.clearDisplay();
40display.setTextColor(WHITE);
41display.setCursor(0,0);
42display.setTextSize(2);
43display.println("OLED");
44display.setCursor(0,32);
45display.println("CLOCK");
46display.display();
47display.startscrollright(0x00,0x05);
48delay(1500);
49display.invertDisplay(1);
50display.stopscroll();
51delay(1000);
52
53    // displays ssid of the router to be connected
54display.invertDisplay(0);
55display.clearDisplay();
56display.setCursor(0,0);
57display.setTextColor(WHITE);
58display.setTextSize(2);
59display.println("CONNECTING");
60display.setCursor(52,16);
61display.println("TO");
62display.setTextSize(1);
63display.println(ssid);
64display.display();
65while(WiFi.status()!=WL_CONNECTED)
66{
67  Serial.print(".");
68  delay(500);
69}
70display.setCursor(0,48);
71display.setTextSize(2);
72display.setTextColor(BLACK,WHITE);
73display.print("Connected");
74display.display();
75delay(500);
76display.clearDisplay();
77display.setTextSize(1);
78display.setTextColor(WHITE);
79}
80
81
82const  int xcenter=90;  //x and y center points for clock
83const int ycenter=32;   
84const  int radius=30;    // radius of clock
85
86
87void loop() {
88  timeclient.update();       
89  display.setCursor(0,0);
90  display.setTextSize(2);
91  display.setTextColor(BLACK,WHITE);
92  display.println("INDIA");     
93  display.setTextColor(WHITE);
94  display.setTextSize(1);
95  display.println();
96  display.println(Week[timeclient.getDay()]);
97  display.println();
98  display.println(timeclient.getFormattedTime());
99  display.println();
100  
101  // to obtain and display date
102  
103  int epochtime=timeclient.getEpochTime();
104  struct tm *ptm = gmtime ((time_t *)&epochtime); 
105  display.print(ptm->tm_mday);
106  display.print(":");
107  display.print( ptm->tm_mon+1);
108  display.print(":");
109  display.println(ptm->tm_year+1900);
110  
111  // to display clock
112  
113  display.drawCircle(xcenter,ycenter,radius,WHITE);
114  displaytime(timeclient.getHours(),timeclient.getMinutes(),timeclient.getSeconds());
115  display.display();
116  display.clearDisplay();
117  delay(1000);
118}
119
120void  displaytime(int hours,int mins,int secs)
121{
122  int Sangle=secs*6;                        //  second angle 
123  int Mangle=mins*6;                         //minute angle
124  int Hangle;                            // hour angle
125  if(hours>=0 and hours<=12)
126  Hangle=30*hours+map(mins,0,60,0,30);      // map for minor adjustments in hour  hand
127  else if(hours>12)              // hour format is 24hrs
128  Hangle=(hours-12)*30+map(mins,0,60,0,30);  
129  
130    //for displaying seconds
131  int shiftSecX=0.8*radius*sin(Sangle*0.0174533);      //shifted x coordinate of second,0.8 is the 
132  int shiftSecY=0.8*radius*cos(Sangle*0.0174533);      //shifted y coordinate of second
133
134 // if(Sangle>=0 and Sangle<=90)
135  display.drawLine(xcenter,ycenter,xcenter+shiftSecX,ycenter-shiftSecY,WHITE);    //1st  quadrant
136/* else if(Sangle>90 and Sangle<=180)
137 display.drawLine(xcenter,ycenter,xcenter+shiftSecX,ycenter-shiftSecY,WHITE);    //4th quadrant
138 else if(Sangle>180 and Sangle<=270)
139 display.drawLine(xcenter,ycenter,xcenter+shiftSecX,ycenter-shiftSecY,WHITE);    // 3rd quadrant
140  else if(Sangle>270 and Sangle<=354)
141display.drawLine(xcenter,ycenter,xcenter+shiftSecX,ycenter-shiftSecY,WHITE);    // 2nd quadrant
142*/
143//for displaying minutes
144  int shiftMinX=radius*sin(Mangle*0.0174533);      //shifted x coordinate of minutes
145  int shiftMinY=radius*cos(Mangle*0.0174533);      //shifted y coordinate of minutes
146
147  display.drawLine(xcenter,ycenter,xcenter+shiftMinX,ycenter-shiftMinY,WHITE);
148
149//for  displaying hours
150  int shiftHourX=0.6*radius*sin(Hangle*0.0174533);      //shifted  x coordinate of hours
151  int shiftHourY=0.6*radius*cos(Hangle*0.0174533);      //shifted  y coordinate of hours
152
153  display.drawLine(xcenter,ycenter,xcenter+shiftHourX,ycenter-shiftHourY,WHITE);
154
155/*
156//  for testing purpose
157  Serial.print(Sangle);
158  Serial.print("\	");
159  Serial.print(sin(Sangle*0.0174533));
160  Serial.print("\	");
161  Serial.print(cos(Sangle*0.0174533));
162  Serial.print("\	");
163  Serial.println(timeclient.getSeconds());
164*/
165}