Keyboard/Amps Foot Switch

Goal

The goal is to build a small equipment that can:

• Control a music teleprompter on a computer (replace a keyboard).
• Control a music amps

This project is a merge of several project I found on a web.

Required items

• 2 diodes 1N4148, example: Here
• 1 ATmega32U4 (since you need the keyboard capability), example: Here
• 3 Foot Switch, example: Here
• 3 resitors 10K and 1 resistor 220
• Optional: 3 Leds to find the button eaqsily with the foot if you plan to use the device in dark room
• A stereo Female Jack socket, found it in all the good music shop
• Few wires to connect all this, example Here
• A box to host the system, example: Here

Improvement

1. Add a wireless capability for the control of the music teleprompter via Bluetooth based on This

This is the code for the Arduino. It is sending F2, F3 and F4 to the computer. You can change this based on the software you use as a teleprompter.

You can also adjust the speed of the letter by changing the delay.

int keys[] = {2,3,4};
int pinCount = 3;
int pinLed = 5;
void setup() {
 // put your setup code here, to run once:
 Keyboard.begin(); // setup keyboard
 for (int i = 0; i < pinCount; ++i) {
 // initilize pins
 pinMode(keys[i], INPUT);
 }
  pinMode(pinLed, OUTPUT);
}
void loop() {
  digitalWrite(pinLed, HIGH);
 // put your main code here, to run repeatedly:
 for (int i = 0; i < pinCount; ++i) {
 // check buttons
 if(readButton(keys[i])) {
 doAction(keys[i]); 
 }
 }
 delay(100);
}
boolean readButton(int pin) {
 // check and debounce buttons
 if (digitalRead(pin) == HIGH) {
  delay(100);
  if (digitalRead(pin) == HIGH) {
    return true;
  }
 }
 return false;
}
void doAction(int pin) {
 // perform tasks
 switch (pin) {
 case 2:
  // Keyboard.write(0x41);
  Keyboard.write(0xC5); 
  // 0xC2 -> F1
 break;
 case 3:
  // Keyboard.write(0x42);
  Keyboard.write(0xC4); 
  // 0xC3 -> F2
 break;
 case 4:
  // Keyboard.write(0x43);
  Keyboard.write(0xC3);  
  // 0xC4 -> F3
 break;
 }
}