arduino-push-to-talk.ino

#include <Keyboard.h>

const int PEDAL_PIN = 2;
int pedalVal = LOW;
char keyToSend = 'm';

void setup() {
  Serial.begin(9600);
  pinMode(PEDAL_PIN, INPUT);
  Keyboard.begin();

  if(digitalRead(PEDAL_PIN) == HIGH) {
      keyToSend = KEY_ESC;
  }
}

void loop() {
  int newPedalVal = digitalRead(PEDAL_PIN);
  if(newPedalVal != pedalVal) {
    pedalVal = newPedalVal;
    if(pedalVal == HIGH) {
      Keyboard.press(keyToSend);
    } else {
      Keyboard.releaseAll();
    }
  }
  delay(50);
}