Use the potentiometer sensor connect to pin A4 to enable users to configure the timer frequency.

const byte LED_PIN = 13;

const byte METER_PIN = A4;

void setup()

{

pinMode(LED_PIN, OUTPUT);

pinMode(METER_PIN, INPUT);

Serial.begin(9600);

startTimer(0.5);

}

void loop()

{

}

void startTimer(double frequency)

{

noInterrupts();

interrupts();

OCR0 = 16.000.000 / (1024 * frequency);

TCCR0A |= (1 << WGM01)

}

ISR(TIMER1_COMPA_vect){

digitalWrite(LED_PIN, digitalRead(LED_PIN) ^ 1);

}

Answer rating: 100% (QA)

ANSWER AND STEP BY STEP EXPLANATION void setup pinModeLEDPIN OUTPUT pinModeMETERPIN INPUT Serialbegi... View the full answer