const int buttonPin = 4; const int magnetPin = 5; int buttonState = 0; int lastButtonState = 0; bool magnetState = false; void setup() { pinMode(buttonPin, INPUT_PULLUP); pinMode(magnetPin, OUTPUT); digitalWrite(magnetPin, LOW); } void loop() { buttonState = digitalRead(buttonPin); if (buttonState == LOW && lastButtonState == HIGH) { delay(50); magnetState = !magnetState; if (magnetState) { digitalWrite(magnetPin, HIGH); } else { digitalWrite(magnetPin, LOW); }} lastButtonState = buttonState; }