Macro Keypad

What is it?
A macro keypad is physical or touch screen keypad that maps multiple or common used shortcut keys to an individual action, think (un)mute on Zoom which by default is ALT + A

Prior Art

Implementation
There are multiple ways this can be done and a common approach is to use a Pro Micro as it has the ability to be programmed as a HID device and emulate both keyboard and mouse however I struggled to do this so ended using an ESP32 and presenting it as a bluetooth keyboard.

V1.00 - Status abandoned couldn't get Pro Micro to program
Pro micro - generic clone 3D Printed case - link from thingiverse goes here Cherry MX clone switches - ebay link here

V1.01 - Status working ESP32-WROOM Module 3D Printed case - link from thingiverse goes here Cherry MX clone switches - ebay link here

Currently have 2 switched hooked up to ESP32 sending ALT + a to mute and unmute and ALT + v to start and stop video

Uses the blekeyboard library for Arduino from -----

#define UK_KEYBOARD 1 #include <Arduino.h> #include <BleKeyboard.h> BleKeyboard bleKeyboard; // Change the below values if desired #define BUTTON_1_PIN 23 #define BUTTON_2_PIN 22 #define MESSAGE "Hello from ESP32\n" #define DEVICE_NAME "My Keyboard" // Forward declarations void bluetoothTask(void*); void typeText(const char* text); bool isBleConnected = false; void setup() { Serial.begin(115200); bleKeyboard.begin(); // configure pin for button pinMode(BUTTON_1_PIN, INPUT_PULLUP); pinMode(BUTTON_2_PIN, INPUT_PULLUP); } void loop() { if (bleKeyboard.isConnected() && digitalRead(BUTTON_1_PIN) == LOW) { // button has been pressed: type message //Serial.println(MESSAGE); //typeText(MESSAGE); Serial.println("Sending Ctrl+Alt+Shift..."); bleKeyboard.press(KEY_LEFT_CTRL); bleKeyboard.press(KEY_LEFT_ALT); bleKeyboard.press(KEY_LEFT_SHIFT); delay(100); bleKeyboard.releaseAll(); Serial.println("Sending F3..."); //bleKeyboard.press(KEY_F3); bleKeyboard.press(KEY_LEFT_ALT); bleKeyboard.press('a'); delay(100); bleKeyboard.releaseAll(); } if (bleKeyboard.isConnected() && digitalRead(BUTTON_2_PIN) == LOW) { // button has been pressed: type message //Serial.println(MESSAGE); //typeText(MESSAGE); Serial.println("Sending Ctrl+Alt+Shift..."); bleKeyboard.press(KEY_LEFT_CTRL); bleKeyboard.press(KEY_LEFT_ALT); bleKeyboard.press(KEY_LEFT_SHIFT); delay(100); bleKeyboard.releaseAll(); Serial.println("Sending F3..."); //bleKeyboard.press(KEY_F3); bleKeyboard.press(KEY_LEFT_ALT); bleKeyboard.press('v'); delay(100); bleKeyboard.releaseAll(); } }