Build Instructions

Collapse

• 1

  Run a Program

  #include

  int Read_Voltage = A1;
  int Read_Current = A0;
  const int rs = 2, en = 4, d4 = 9, d5 = 10, d6 = 11, d7 = 12;
  LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
  float Voltage = 0.0;
  float Current = 0.0;
  float Power = 0.0;
  void setup()
  {
  lcd.begin(16, 2);
  Serial.begin(9600);

  lcd.print(" Arduino ");
  lcd.setCursor(0, 1);
  lcd.print(" Wattmeter ");

  delay(2000);
  lcd.clear();

  }

  void loop()
  {
  
  Voltage = analogRead(Read_Voltage);
  Current = analogRead(Read_Current);

  Voltage = Voltage * (5.0/1023.0) * 6.46;
  Current = Current * (5.0/1023.0) * 0.239;

  Serial.println(Voltage);
  Serial.println(Current);

  Power = Voltage * Current;

  Serial.println(Power);

  lcd.setCursor(0, 0);
  lcd.print("V="); lcd.print(Voltage);
  lcd.print(" ");
  lcd.print("I=");lcd.print(Current);
  lcd.setCursor(0, 1);
  lcd.print("P="); lcd.print(Power);
  delay(1000);
  }

View all instructions