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

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

Answer:

code:

slave code:

//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.print(voltage);

  delay(50);            

}

Master code

//MASTER

#include

void setup()

{

  pinMode(A1, INPUT);

  Serial.begin(9600);

  Wire.begin();

}

void loop()

{

  float value=analogRead(A1);

  signed int voltage=(value*5)/1024;

  Wire.beginTransmission(1);

  Wire.write(voltage);

  Wire.endTransmission();

  delay(50);

}

List of component:

Name	Quantity	Component
U1 U2	2	Arduino Uno R3
U4	1	LCD 16 x 2
R1	1	220 Ω Resistor
Rpot2	1	250 kΩ Potentiometer