Project 1 - Interfacing a 16*2 LCD with Arduino using I2C protocol
offline batch
//SLAVE
#include<Wire.h>
#include<LiquidCrystal.h>
LiquidCrystal lcd(12,11,5,4,3,2);//declaring the LCD connection
void setup()
{
Serial.begin(9600);
Wire.begin(5);
Wire.onReceive(priya);
lcd.begin(16,2);
}
void loop()
{
delay(50);
}
void priya(int y)
{
signed int voltage=Wire.read();
lcd.setCursor(0,0);
lcd.print("the voltage :");
//lcd.setCursor(0,1);
lcd.print(voltage);
//Serial.print("voltage value\n");
//Serial.println(5);
delay(50);
}
//MASTER
#include<Wire.h>
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(5);
Wire.write(voltage);
Wire.endTransmission();
delay(50);
}