const int zeroCrossPin = 2;   // Zero-crossing detection pin (D2)
const int triacPin = 12;      // Triac control pin (D12)

volatile bool zeroCrossDetected = false;

void zeroCrossingInterrupt() {
  zeroCrossDetected = true;
}

void setup() {
  pinMode(triacPin, OUTPUT);
  pinMode(zeroCrossPin, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(zeroCrossPin), zeroCrossingInterrupt, RISING);
}

void loop() {
  static uint16_t power = 7000;//map(analogRead(A0),0,1024,9990,0);

  if (zeroCrossDetected) {
    digitalWrite(triacPin, LOW);  // Ignite the triac
    delayMicroseconds(power);        // Delay for the desired phase angle (adjust as needed)
    digitalWrite(triacPin, HIGH);   // Turn off the triac
    zeroCrossDetected = false;
  }
}