Code Club Electronics 12
So the next project is to try and link the potentiometer value to a buzzer tone.
So, using some tutorial code for the buzzer here. I have tried to modify to change the tone of the buzzer depending on the value from the potentiometer.
// the setup function runs once when you press reset or power the board
float floatMap(float x, float in_min, float in_max, float out_min, float out_max) {
return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}
const int buzzer = 5;
void setup() {
// initialize digital pin LED_BUILTIN as an output.
pinMode(buzzer, OUTPUT);
}
// the loop function runs over and over again forever
void loop() {
// read the input on analog pin A0:
int analogValue = analogRead(A0);
// Rescale to potentiometer's voltage (from 0V to 5V):
float voltage = floatMap(analogValue, 0, 1023, 0, 5);
tone(buzzer, 1000); // 1khz tone to buzzer
delay(analogValue); // wait for time period linked to pot input value
tone(buzzer, 1000); // 1khz tone to buzzer
//https://www.instructables.com/How-to-use-a-Buzzer-Arduino-Tutorial/
}
What I have now is a little buggy, If I bind the actual pot value between 0 and 1023, anything below 20hz is inaudible, so that the frequency is within the human hearing range (20hz – 20khz)
Not quite sure what is going to work, sharing this as work in progress.
Links
Tags
#Electronics,#Code,#Arduino,#Hacking.#TempSensor
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