Project 1 - Interfacing a 16*2 LCD with Arduino using I2C protocol

PROGRAM:

                          //MASTER

#include

void setup()
{
pinMode(A1, INPUT);
Serial.begin(9600);
Wire.begin();

}

void loop()
{
float value=analogRead(A1);
signed int voltage=(value*5)/1024;
// int temp=(voltage-0.5)*100;
Wire.beginTransmission(1);
Wire.write(voltage);
Wire.endTransmission();
delay(50);
}

 

 

 

                                    //SLAVE

#include
#include
LiquidCrystal lcd(12,11,5,4,3,2);
void setup()
{
Serial.begin(9600);
Wire.begin(1);
Wire.onReceive(ruso);
lcd.begin(16,2);
}
void loop()
{
delay(50);
}

void ruso(int y)
{

signed int voltage=Wire.read();
lcd.setCursor(0,0);
lcd.print("the voltage is");
//lcd.setCursor(0,1);
lcd.print(voltage);
//Serial.print("voltage value\n");
//Serial.println(5);
delay(50);

}