archit borkar
Published © GPL3+

Bluetooth Smart Watch Arduino

This is a DIY Arduino smart watch, works on Bluetooth connectivity and is chargeable - tested for 6 Hours performance on one charge.

IntermediateFull instructions provided3 hours748
Bluetooth Smart Watch Arduino

Things used in this project

Hardware components

Arduino Nano R3
Arduino Nano R3
×1
0.96" OLED 64x128 Display Module
ElectroPeak 0.96" OLED 64x128 Display Module
×1
HC-05 Bluetooth Module
HC-05 Bluetooth Module
×1
5V Vibration Motor
×1
Pushbutton switch 12mm
SparkFun Pushbutton switch 12mm
×1
Toggle Switch, Insulated Lever
Toggle Switch, Insulated Lever
×1
Charging Module
×1
Rechargeable Battery, 3.7 V
Rechargeable Battery, 3.7 V
×1

Software apps and online services

Arduino IDE
Arduino IDE
MIT App Inventor 2
MIT App Inventor 2

Hand tools and fabrication machines

Soldering iron (generic)
Soldering iron (generic)
Solder Wire, Lead Free
Solder Wire, Lead Free
Hot glue gun (generic)
Hot glue gun (generic)

Story

Read more

Schematics

Schematic diagram

Code

Arduino code for Watch

Arduino
#include <SoftReset.h>
#include "U8glib.h"
#include "SoftwareSerial.h"
#include <MemoryFree.h>
#include <avr/sleep.h>

#define nextButton 7      //define the pin numbers for the buttons
#define previousButton 5
#define menuButton 4
#define mot 9
#define buzz A3

SoftwareSerial bluetooth(2,3);    //Use software serial for bluetooth

const unsigned char PROGMEM ICON_BITMAP_1[] = 
{     //Android Logo
  0x00,0x00,
  0x00,0x00,
  0x04,0x40,
  0x07,0xc0,
  0x0f,0xe0,
  0x0b,0xa0,
  0x1f,0xf0,
  0x00,0x00,
  0x5f,0xf4,
  0x5f,0xf4,
  0x5f,0xf4,
  0x5f,0xf4,
  0x1f,0xf0,
  0x0c,0x60,
  0x0c,0x60,
  0x00,0x00
};

const unsigned char PROGMEM ICON_BITMAP_20[] = 
{    //chat
  0x00,0x00,
  0x00,0x00,
  0x3f,0xf8,
  0x40,0x04,
  0x40,0x04,
  0x40,0x04,
  0x40,0x04,
  0x49,0x24,
  0x40,0x04,
  0x40,0x04,
  0x40,0x04,
  0x3f,0xc8,
  0x00,0x28,
  0x00,0x18,
  0x00,0x08,
  0x00,0x00
}; 

const unsigned char PROGMEM ICON_BITMAP_65[] = 
{    //bar signal
  0x00,0x00,
  0x00,0x00,
  0x3f,0xe0,
  0x10,0x40,
  0x08,0x80,
  0x05,0x00,
  0x02,0x00,
  0x02,0x00,
  0x02,0x00,
  0x00,0x0c,
  0x00,0x6c,
  0x03,0x6c,
  0x1b,0x6c,
  0x1b,0x6c,
  0x00,0x00,
  0x00,0x00
};

int i,c=0,t=0;

boolean clockUp = true;
boolean menuShow = false;
boolean selectButtonbool = false;
boolean newMessage = false;
boolean newCall = false;
boolean newCallR = false;
boolean newNote = false;
boolean newBuzz = false;

byte hours = 0;
byte minutes = 0;
byte seconds = 0;
byte day = 0;
byte date = 0;
byte month = 0;
int year = 0;

int k,j,n1,n2,n3,n4,n5,n6,n7,n8,N1,N2,N3,N4,N5,N6,N7,N8 = 0;
float x1,x2,ans = 0.0;

char DateBuffer[30];
char* TimeStorage [6];
char* vout;

String monthw;
String number;
String numberR;
String NoteS;
String message;     //Variable for SMS messages
String blReceived;    //Storage for strings received from bluetooth

char msg[150];    //Char array for SMS
char numb[15];
char numbR[15];
char note[300];
String op[4]={"+","-","*","/"};

byte menuSelection = 0;   //Menu
byte menuSelections = 0;  //Settings
byte menuSelectiona = 0;  //Apps
byte len;         //Length of message
byte len1;
byte len2;
byte l;

static unsigned long lastTick = 0;

//U8GLIB_SSD1306_ADAFRUIT_128X64 u8g(U8G_I2C_OPT_NO_ACK|U8G_I2C_OPT_FAST);
//U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_DEV_0|U8G_I2C_OPT_NO_ACK|U8G_I2C_OPT_FAST); // I2C / TWI
U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NO_ACK|U8G_I2C_OPT_FAST);
//U8GLIB_SH1106_128X64_2X u8g(13, 11, 10, 9,8); // SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9, RST = 8

void setup(void) {
  // flip screen, if required
  //u8g.setRot180();
  
pinMode(nextButton,INPUT);  //Set digital pins as inputs
pinMode(previousButton,INPUT);
pinMode(menuButton,INPUT);
pinMode(mot,OUTPUT);
pinMode(buzz,OUTPUT);
  
Serial.begin(9600);
bluetooth.begin(9600);
  
digitalWrite(nextButton,HIGH);  //Enable internal pull up on all buttons
digitalWrite(previousButton,HIGH);
digitalWrite(menuButton,HIGH);
digitalWrite(mot,HIGH);
delay(500);
digitalWrite(mot,LOW);
drawStartUp();                                                                                                                                   
delay(4000);
   
}//end of setup

void loop() {
  int k,j,n1,n2,n3,n4,n5,n6,n7,n8,N1,N2,N3,N4,N5,N6,N7,N8 = 0;
  float x1,x2,ans = 0.0;
  t++;
  if(t>160)
  {
    sleep();
  }
  if(digitalRead(menuButton)==LOW)
    t=0; 
if(bluetooth.available() > 0 /*&& bluetooth.find("(")*/)
{
  blReceived = bluetooth.readString();
  if(blReceived.startsWith("1"))    //1 is the preamble date
  {
    digitalWrite(mot,HIGH);
    delay(1000);
    digitalWrite(mot,LOW);
    seconds++;
    blReceived.toCharArray(DateBuffer,blReceived.length()+1);
    vout = strtok(DateBuffer,",");
    for(int i=0;i<=6;i++)
    {
      //if(TimeStorage[i] = NULL)
      //{Serial.println("Exited Loop");
      //  break;}
      TimeStorage[i] = strtok(NULL,",");
      delay(10);
    }
    //int example = bluetooth.parseInt();
    day = atoi(TimeStorage[0] - 1);
    date = atoi(TimeStorage[1]);
    month = atoi(TimeStorage[2]);
    year = atoi(TimeStorage[3]);
    hours = atoi(TimeStorage[4]);
    minutes = atoi(TimeStorage[5]);
    seconds = atoi(TimeStorage[6]);
    blReceived="";
    t=0;
  }
  else if (blReceived.startsWith("2"))
  {
    digitalWrite(mot,HIGH);
    delay(1000);
    digitalWrite(mot,LOW);
    seconds++;
    newMessage = true;
    message = blReceived;
    //sms();
    //delay(300000);
    blReceived="";
    t=0;
  }
  else if (blReceived.startsWith("3"))
  {
    digitalWrite(mot,HIGH);
    delay(1000);
    digitalWrite(mot,LOW);
    seconds++;
    newCall = true;
    number = blReceived;
    //num();
    //delay(300000);
    blReceived="";
    t=0;
  }
  else if (blReceived.startsWith("4"))
  {
      digitalWrite(mot,HIGH);
      delay(1000);
      digitalWrite(mot,LOW);
      newCallR = true;
      numberR = blReceived;
      t=0;
      u8g.firstPage();
   do
   {
      u8g.setFont(u8g_font_unifont);
      u8g.setPrintPos(0,20);
      u8g.print("Calling...");
      u8g.setPrintPos(0,40);
      u8g.print(numberR);
      len2 = numberR.length();

      number.toCharArray(numbR, len2+1);
      //Serial.println(len2);
      if(len2<15)
      {
         //Serial.println("If");
         for (int i = 0;(i-1)<len2;i++)
         {
            //Serial.println("Enter for loop");
            u8g.setPrintPos(i*8,30);
            u8g.print(numbR[i-15]);
            delay(10);
            if(numbR[i-16] == '\0')
            { 
               //Serial.println("Break!!");
               break;
               //delay(3000);
            }
         }
      }
  }
  while (u8g.nextPage());
  blReceived="";
  delay(15000);
  seconds=seconds+15;
  newCallR = false;
  }
  else if (blReceived.startsWith("5"))
  {
    digitalWrite(mot,HIGH);
    delay(1000);
    digitalWrite(mot,LOW);
    seconds++;
    newNote = true;
    NoteS = blReceived;
    //notes();
    //delay(300000);
    blReceived="";
    t=0;
  }
  else if (blReceived.startsWith("6"))
  {
    newBuzz = true;
    Buzz();
    blReceived="";
    t=0;
  }
  
  /*Serial.println(day-1);
  Serial.println(date);
  Serial.println(month);
  Serial.println(year);
  Serial.println(hours);
  Serial.println(minutes);
  Serial.println(seconds);*/
}     //end of if for datetime

  /*Serial.println(day-1);
  Serial.println(date);
  Serial.println(month);
  Serial.println(year);
  Serial.println(hours);
  Serial.println(minutes);
  Serial.println(seconds);*/

/*else if(bluetooth.available() > 0 && bluetooth.find("CMD")==true)
{
  Serial.println("ENTERED MESSAGE");
  message = bluetooth.readString();
  Serial.println(message);
  //delay(300000);
}
*/
  
if(digitalRead(previousButton)==LOW && digitalRead(nextButton)==LOW)  //button is activated
{
  seconds=seconds+4;    
  if(menuShow == false)    //To toggle the menu states
  {
     menuShow = true;
     delay(100);
     menu();  //Get back the menu selection number                                                            
     if(menuSelection == 4)
     {
        seconds=seconds+4;
        delay(100);
        menuSelection = 0;
        while(digitalRead(menuButton)== HIGH)
        {
           HA();
           delay(10);
        }
     }
     if(menuSelection == 3)
     {
        seconds=seconds+4; 
        settings();
        if(menuSelections == 2)
        {
           seconds=seconds+4;
           delay(100);
           menuSelections=0;
           delay(100);
           while(digitalRead(menuButton)== HIGH)
           {
              notice();
           }
           delay(100);
        }
        if(menuSelections == 3)
        {
           seconds=seconds+4;
           delay(100);
           menuSelections=0;
           while(digitalRead(menuButton)==HIGH)
           {
              torch();
              delay(10);
           }
        }
        if(menuSelections == 4)
        {
           seconds=seconds+4;
           delay(100);
           menuSelections=0;
           while(digitalRead(menuButton)==HIGH)
           {
             bluetooth.write("1");
             delay(1000);
             bluetooth.write("");
           }
        }
        bluetooth.write("");
        bluetooth.write("2");
        bluetooth.write("");
     }
     if(menuSelection == 2)
     {
        seconds=seconds+4;
        apps(); 
        if(menuSelectiona == 2)
        {  
           seconds=seconds+4;
           delay(100);
           menuSelectiona = 0;
           while(digitalRead(menuButton)==HIGH)
           {
              Calc();
           }
           bluetooth.write("");    
        }  
        
        if(menuSelectiona == 3)
        {
           seconds=seconds+4;
           delay(100);
           menuSelectiona = 0;
           while(digitalRead(menuButton)== HIGH)
           {sms();}
           delay(100);
        }
        if(menuSelectiona == 4)
        {
           seconds=seconds+4;
           delay(100);
           menuSelectiona = 0;
           while(digitalRead(menuButton)== HIGH)
           {call();}
           delay(100);
        }
     }
  }
  if(menuShow == true)
  {
     menuShow = false;
     delay(100);   
  }
}//end of if
advanceTime();
delay(30);
}//end of loop

void sleep()
{
   u8g.firstPage();
   do{}
   while(u8g.nextPage());
}
  
void advanceTime()
{
   if(millis()-lastTick>950)  //somehow
   {
      lastTick = millis();
      seconds++;
   }
   
   if (seconds > 59)
   {
      minutes++;
      seconds = 0;
   }
   
   if (minutes >59)
   {
      hours++;
      minutes = 0;
   }
   
   if (hours > 23)
   {
      hours = 0;
      minutes = 0;
      date+=1;
   }
   draw();                                                                                             
}

 
//*****------------------U8Glib Functions------------------*****
void HA()
{
  u8g.firstPage();  
  do {
        bluetooth.write("3");
        u8g.setFont(u8g_font_unifont);
        u8g.setPrintPos(0,10);
        u8g.print("Home Automation");
        u8g.setFont(u8g_font_unifont);
        u8g.setPrintPos(30,10);
        u8g.print("In Development");
        bluetooth.write("");
  } while( u8g.nextPage() );
}

void Buzz()
{
    while(c<5)
    {
      for(i=1;i<256;i++)
      {
        analogWrite(buzz,i);
        delay(3.92);
      }
      for(i=256;i>0;i--)
      {
        analogWrite(buzz,i);
        delay(3.92);
      }
      c++;
    }
    c=0;
    newBuzz=false;
}

void drawStartUp()
{
  u8g.firstPage();
  do
  {
    //u8g_prepare();
    u8g.setColorIndex(0);
    u8g.drawBox(0,0,127,63);
    u8g.setColorIndex(1);
    u8g.setFont(u8g_font_7x14r);
    u8g.setPrintPos(5,10);
    u8g.print("Developed By:-");
    u8g.setFont(u8g_font_fur17r);
    u8g.setPrintPos(10,38);
    u8g.print("USER");
    u8g.setFont(u8g_font_7x14r);
    u8g.setPrintPos(5,62);
    u8g.print("V402");
  }
  while(u8g.nextPage());
}  //end of drawStartUp

void menu()
{  
   u8g.setColorIndex(1);
   //u8g.drawCircle(20,20,14);
   menuSelection = 1;
   while(digitalRead(menuButton) == HIGH)
   {
      if(digitalRead(nextButton) == LOW)
      {
         delay(20);
         menuSelection++;
         delay(50);
      }  
     
     if(digitalRead(previousButton) == LOW)
     {
        delay(20);
        menuSelection--;
        delay(50);
     }
     
     if(menuSelection > 4)
     {menuSelection = 1;}

     if(menuSelection < 1)
     {menuSelection = 4;}
     //draw picture here
     drawMenu();

     delay(50); //For debouncing
    
     //draw menus here
  }//end of while loop
}//end of menu

void drawMenu()
{
   u8g.firstPage();
   do
   {
      u8g.setFont(u8g_font_6x10r);
      u8g.setPrintPos(30,8);
      u8g.print("--- Menu ---");
      //u8g.setPrintPos(0,10);
      //u8g.print(menuSelection);
      u8g.drawFrame(0,(menuSelection*13)-3,128,13); //Box height is 13 pixels
      u8g.drawLine(0,10,128,10);

      //Draw menu options
      u8g.drawStr(3,20,"Return");
      u8g.drawStr(3,20+13,"Apps");
      u8g.drawStr(3,20+13+13,"Settings");
      u8g.drawStr(3,20+13+13+13,"Home Auto(Beta)");
      //u8g.drawStr(3,20+13+13+13,"More");   
   }
   while(u8g.nextPage());
}

void apps()
{
   u8g.setColorIndex(1);
   //u8g.drawCircle(20,20,14);
   menuSelectiona = 1;
   delay(200);
   while(digitalRead(menuButton) == HIGH)
   {
      if(digitalRead(nextButton) == LOW)
      {
         delay(20);
         menuSelectiona++;
         Serial.println("Up");
         delay(50);
      }
     
      if(digitalRead(previousButton) == LOW)
      {
         delay(20);
         menuSelectiona--;
         delay(50);
      }

      if(menuSelectiona > 4)
      {menuSelectiona = 1;}

      if(menuSelectiona < 1)
      {menuSelectiona = 4;}
      //draw picture here
    drawApps();
    delay(50); //For debouncing
  }//end of while loop
}

void notice()
{
   u8g.firstPage();
   do
   {
      u8g.setFont(u8g_font_6x10r);
      //u8g.print(NoteS);
      l = NoteS.length();
      NoteS.toCharArray(note, l+1);
      //Serial.println(len);
      if(l>0)
      {
        for(i=0;i<20;i++)
        {
           u8g.setPrintPos(i*6,8);
           u8g.print(note[i]);
           delay(10);
        }
      }
      if(l>20)
      {
        for(i=20;i<40;i++)
        {
           u8g.setPrintPos((i-20)*6,17);
           u8g.print(note[i]);
           delay(10);
        }
      }
      if(l>40)
      {
        for(i=40;i<60;i++)
        {
           u8g.setPrintPos((i-40)*6,26);
           u8g.print(note[i]);
           delay(10);
        }
      }
      if(l>60)
      {
        for(i=60;i<80;i++)
        {
           u8g.setPrintPos((i-60)*6,35);
           u8g.print(note[i]);
           delay(10);
        }
      }
      if(l>80)
      {
        for(i=80;i<100;i++)
        {
           u8g.setPrintPos((i-80)*6,43);
           u8g.print(note[i]);
           delay(10);
        }
      }
      if(l>100)
      {
        for(i=100;i<120;i++)
        {
           u8g.setPrintPos((i-100)*6,51);
           u8g.print(note[i]);
           delay(10);
        }
      }
      if(l>120)
      {
        for(i=120;i<140;i++)
        {
           u8g.setPrintPos((i-120)*6,59);
           u8g.print(note[i]);
           delay(10);
        }
      }
  }
  while (u8g.nextPage());
  delay(30);
  newNote = false;
}

void torch()
{
   u8g.firstPage();
   do{u8g.drawBox(0,0,127,63);}
   while(u8g.nextPage());
}

void drawApps()
{
   u8g.firstPage();
   do
   {
      u8g.setFont(u8g_font_6x10r);
      u8g.setPrintPos(5,8);
      u8g.print("--- Applications ---");
      //u8g.setPrintPos(0,10);
      //u8g.print(menuSelection);
      u8g.drawFrame(0,(menuSelectiona*13)-3,128,13);  //Box height is 13 pixels
      u8g.drawLine(0,10,128,10);

      //Draw menu options
      u8g.drawStr(3,20,"Return");
      u8g.drawStr(3,20+13,"CALC");
      u8g.drawStr(3,20+13+13,"SMS");
      u8g.drawStr(3,20+13+13+13,"CALLS");
      //u8g.drawStr(3,20+13+13+13,"More");
   }  
   while(u8g.nextPage());
}

void settings()
{
   u8g.setColorIndex(1);
   //u8g.drawCircle(20,20,14);
   menuSelections = 1;
   delay(200);
   while(digitalRead(menuButton) == HIGH)
   {  
      if(digitalRead(nextButton) == LOW)
      {
         delay(20);
         menuSelections++;
         Serial.println("Up");
         delay(50);
      }
     
      if(digitalRead(previousButton) == LOW)
      {
         delay(20);
         menuSelections--;
         delay(50);
      }
     
      if(menuSelections > 4)
      {menuSelections = 1;}

      if(menuSelections < 1)
      {menuSelections = 4;}
      //draw picture here
      drawSettings();

      delay(50); //For debouncing
   }//end of while loop
}

void sms()
{
   u8g.firstPage();
   do
   {
      u8g.setFont(u8g_font_unifont);
      u8g.setPrintPos(0,10);
      u8g.print(message);
      len = message.length();

      message.toCharArray(msg, len+1);
      //Serial.println(len);
      if(len>16)
      {
         //Serial.println("If");
         for (int i = 0;(i-1)<len;i++)
         {
            //Serial.println("Enter for loop");
            u8g.setPrintPos(i*8,30);
            u8g.print(msg[i+16]);
            delay(10);
            if(msg[i+17] == '\0')
            { 
               //Serial.println("Break!!");
               break;
               //delay(3000);
            }
         }
      }
      
      if(len>32)
      {
         //Serial.println("If");
         for (int i = 0;(i-1)<len;i++)
         {
            //Serial.println("Enter for loop");
            u8g.setPrintPos(i*8,50);
            u8g.print(msg[i+32]);
            delay(10);
            if(msg[i+33] == '\0')
            { 
               //Serial.println("Break!!");
               break;
               //delay(3000);
            }
         }
      }
  }
  while (u8g.nextPage());
  delay(30);
  newMessage = false;
}

void call()
{
   u8g.firstPage();
   do
   {
      u8g.setFont(u8g_font_unifont);
      u8g.setPrintPos(0,10);
      u8g.print(number);
      len1 = number.length();

      number.toCharArray(numb, len1+1);
      //Serial.println(len1);
      if(len1<15)
      {
         //Serial.println("If");
         for (int i = 0;(i-1)<len1;i++)
         {
            //Serial.println("Enter for loop");
            u8g.setPrintPos(i*8,30);
            u8g.print(numb[i-15]);
            delay(10);
            if(numb[i-16] == '\0')
            { 
               //Serial.println("Break!!");
               break;
               //delay(3000);
            }
         }
      }
  }
  while (u8g.nextPage());
  delay(30);
  newCall = false;
}

void drawSettings()
{
   u8g.firstPage();
   do
   {
      u8g.setFont(u8g_font_6x10r);
      u8g.setPrintPos(15,8);
      u8g.print("--- Settings ---");
      //u8g.setPrintPos(0,10);
      //u8g.print(menuSelection);
      u8g.drawFrame(0,(menuSelections*13)-3,128,13);  //Box height is 13 pixels
      u8g.drawLine(0,10,128,10);

      //Draw menu options
      u8g.drawStr(3,20,"Return");
      u8g.drawStr(3,20+13,"Notes");
      u8g.drawStr(3,20+13+13,"Torch");
      u8g.drawStr(3,20+13+13+13,"Find My Phone");
  }
  while(u8g.nextPage());
}

void CalcPrintdata()
{
  u8g.setPrintPos(50,25);
  u8g.print(n3);
  u8g.setPrintPos(40,25);
  u8g.print(n4);
  u8g.setPrintPos(30,25);
  u8g.print(n5);
  u8g.setPrintPos(20,25);
  u8g.print(n6);
  u8g.setPrintPos(60,25);
  u8g.print(".");
  u8g.setPrintPos(70,25);
  u8g.print(n7);
  u8g.setPrintPos(80,25);
  u8g.print(n8);
  u8g.setPrintPos(3,37);
  u8g.print(op[k]);
  u8g.setPrintPos(50,37);
  u8g.print(N3);
  u8g.setPrintPos(40,37);
  u8g.print(N4);
  u8g.setPrintPos(30,37);
  u8g.print(N5);
  u8g.setPrintPos(20,37);
  u8g.print(N6);
  u8g.setPrintPos(60,37);
  u8g.print(".");
  u8g.setPrintPos(70,37);
  u8g.print(N7);
  u8g.setPrintPos(80,37);
  u8g.print(N8);
  u8g.setPrintPos(5,46);
  u8g.print("---------------");      
  u8g.setPrintPos(5,54);
  u8g.print(ans);
}

void Calc()
{
   u8g.firstPage();
   do{
        u8g.setFont(u8g_font_unifont);
        u8g.setPrintPos(0,10);
        u8g.print("Calculator:-");
        if(digitalRead(previousButton) == LOW)
        {
          j++;
          delay(300);
          if(j>12)
            j = 0;
        }
        if(digitalRead(nextButton)==LOW && digitalRead(previousButton)==LOW)
        {
          j=13;
          delay(300);
        }
        if(j==0)
        {
          CalcPrintdata();
          if(digitalRead(nextButton) == LOW)
          {
            n6++;
            delay(300);
          }
          if(n6>9)
            n6=0;
        }
        if(j==1)
        {
          CalcPrintdata();
          if(digitalRead(nextButton) == LOW)
          {
            n5++;
            delay(300);
          }
          if(n5>9)
            n5=0;
        }
        if(j==2)
        {
          CalcPrintdata();
          if(digitalRead(nextButton) == LOW)
          {
            n4++;
            delay(300);
          }
          if(n4>9)
            n4=0;
        }
        if(j==3)
        {
          CalcPrintdata();
          if(digitalRead(nextButton) == LOW)
          {
            n3++;
            delay(300);
          }
          if(n3>9)
            n3=0;
        }
        if(j==4)
        {
          CalcPrintdata();
          if(digitalRead(nextButton) == LOW)
          {
            n7++;
            delay(300);
          }
          if(n7>9)
            n7=0;
        }
        if(j==5)
        {
          CalcPrintdata();
          if(digitalRead(nextButton) == LOW)
          {
            n8++;
            delay(300);
          }
          if(n8>9)
            n8=0;
        }
        if(j==6)
        {
          CalcPrintdata();
          if(digitalRead(nextButton) == LOW)
          {
            k++;
            delay(300);
          }
          if(k>3)
            k=0;
        }
        if(j==7)
        {
          CalcPrintdata();
          if(digitalRead(nextButton) == LOW)
          {
            N6++;
            delay(300);
...

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Credits

archit borkar

archit borkar

1 project • 2 followers

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