A stream deck with 6 keys using Seeeduino Xiao.
Download the board to Arduino IDE using this link: https://files.seeedstudio.com/arduino/package_seeeduino_boards_index.json
Possible keys shown here: https://www.arduino.cc/reference/en/language/functions/usb/keyboard/keyboardmodifiers/
const int keys[6][3] = {
{KEY_LEFT_CTRL ,int('c') ,-1}, // Key 1: Copy shortcut
{KEY_LEFT_CTRL ,int('v') ,-1}, // Key 2: Paste shortcut
{KEY_KP_ENTER ,-1 ,-1}, // Key 3: Enter
{KEY_UP_ARROW ,-1 ,-1}, // Key 4: Up
{KEY_DOWN_ARROW ,-1 ,-1}, // Key 5: Down
{KEY_LEFT_CTRL ,-1 ,-1} // Key 6: Ctrl
};