How do I code to use a potentiometer to control the voltage rating going to a buzzer? Thus, changing the tone of the buzzer.
There is a example code on the net that uses a potentiometer to fade an LED. I tried modifying that code for my aim, but I was unsuccessful. I tried to make the range of the potentiometer 300-900 volts though it just came out as ~ 25 volts no matter where the potentiometer was.
Here is the example code:
int led = 9; // the PWM pin the LED is attached to
int brightness = 0; // how bright the LED is
int fadeAmount = 5; // how many points to fade the LED by
// the setup routine runs once when you press reset:
void setup() {
// declare pin 9 to be an output:
pinMode(led, OUTPUT);
}
// the loop routine runs over and over again forever:
void loop() {
// set the brightness of pin 9:
analogWrite(led, brightness);
// change the brightness for next time through the loop:
brightness = brightness + fadeAmount;
// reverse the direction of the fading at the ends of the fade:
if (brightness <= 0 || brightness >= 255) {
fadeAmount = -fadeAmount;
}
// wait for 30 milliseconds to see the dimming effect
delay(30);
}