🪴 ماموریت ۶۷: گلدون تشنه

سیم‌کشی

1. Arduino Uno (VCC5) ⟷ Soil Moisture (VCC)
2. Soil Moisture (AO) ⟷ Arduino Uno (A0)
3. Soil Moisture (GND) ⟷ Arduino Uno (GND1)
4. Arduino Uno (D9) ⟷ LED (Red) (ANODE)
5. LED (Red) (CATHODE) ⟷ مقاومت 220Ω (PIN1)
6. مقاومت 220Ω (PIN2) ⟷ Arduino Uno (GND1)

کد

const int DRY = 300;   // below this the soil is dry

void setup() {
  pinMode(9, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  int wet = analogRead(A0);
  if (wet < DRY) {
    digitalWrite(9, HIGH);
    Serial.println("Water me!");
  } else {
    digitalWrite(9, LOW);
  }
  delay(1000);
}