MACRO PAD

This project was created as an affordable alternative to the popular Sayo Device while maintaining compatibility with the same software ecosystem. Whether you're using it for Geometry Dash, OBS controls, push-to-talk, media controls, CAD shortcuts, or custom macros, this device provides a simple and customizable solution.

BOM(Bill Of Materials): 

Arduino Pro Micro (this is optional you can use any micro controller)

3x Red linear switches(you can use holographic keycaps for a better response time)

3x Keycaps(I just 3d printed mine)

Micro USB cable

Assembly

Solder the switches positive to the digital pins(I used D2, D3, and D4)

Solder all the Ground wires together, then Solder it to the boards gnd

Glue the Pro Micro to the place to hold it

Plug it in and enjoy

Code

The code is super simple just modify it to your liking and load it onto Arduino ide

/*
 3-Key Macro Pad
 Easy editable Arduino IDE code

 Works with boards that support USB Keyboard:
 - Arduino Leonardo
 - Arduino Micro
 - Pro Micro / ATmega32U4
 - Some RP2040 boards with Keyboard support
*/

#include <Keyboard.h>

// =======================
// EASY EDIT SECTION
// =======================

// Button pins
const int BUTTON_1_PIN = 2;
const int BUTTON_2_PIN = 3;
const int BUTTON_3_PIN = 4;

// What each button types or sends
// Change the text inside the quotes
String BUTTON_1_TEXT = "Hello!";
String BUTTON_2_TEXT = "GG";
String BUTTON_3_TEXT = "Subscribe";

// Set this to true if you want Enter pressed after the text
bool PRESS_ENTER_AFTER_BUTTON_1 = true;
bool PRESS_ENTER_AFTER_BUTTON_2 = true;
bool PRESS_ENTER_AFTER_BUTTON_3 = true;

// Debounce delay
int debounceDelay = 200;

// =======================
// ADVANCED SECTION
// Most users do not need to edit below this line
// =======================

void setup() {
 pinMode(BUTTON_1_PIN, INPUT_PULLUP);
 pinMode(BUTTON_2_PIN, INPUT_PULLUP);
 pinMode(BUTTON_3_PIN, INPUT_PULLUP);

 Keyboard.begin();
}

void loop() {
 checkButton(BUTTON_1_PIN, BUTTON_1_TEXT, PRESS_ENTER_AFTER_BUTTON_1);
 checkButton(BUTTON_2_PIN, BUTTON_2_TEXT, PRESS_ENTER_AFTER_BUTTON_2);
 checkButton(BUTTON_3_PIN, BUTTON_3_TEXT, PRESS_ENTER_AFTER_BUTTON_3);
}

void checkButton(int pin, String textToType, bool pressEnter) {
 if (digitalRead(pin) == LOW) {
   Keyboard.print(textToType);

   if (pressEnter) {
     Keyboard.press(KEY_RETURN);
     delay(10);
     Keyboard.release(KEY_RETURN);
   }

   delay(debounceDelay);

   while (digitalRead(pin) == LOW) {
     delay(10);
   }
 }
}