Build Instructions

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  Run a Program

  #include #include
  #define PCF8591 (0x90 >> 1)
  #define AIN0 0x00
  const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
  LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
  int Value = 0;
  
  void setup()
  {
  Wire.begin();
  lcd.begin(16,2);
  }
  void loop()
  {
  Wire.beginTransmission(PCF8591);
  Wire.write(AIN0);
  Wire.endTransmission();
  Wire.requestFrom(PCF8591, 1);
  
  Value = Wire.read();
  lcd.print("ADC Value=");
  lcd.print(Value);
  delay(500);
  lcd.clear();
  }

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