Adafruit-Bluetooth-Bluefruit-EZ-Link-for-HID-Keyboard-Controller-Adafruit-1535-P-The-Adafruit-Bluefruit-EZ-Key-12-input-Bluetooth-HID-Keyboard-Controller-helps-you-build-a-custom-wireless-keyboard-into-your-next-project-The-controller-has-12-inputs-that-can-be-attached-to-buttons-&-by-default-it-outputs-the-arrow-keys-w-a-s-d-1-&-2-These-keys-can-be-re-mapped-over-the-air-&-can-also-have-mouse-movements-&-buttons-assigned-Multiple-Bluefruit-boards-can-be-paired-wi