# Bluetooth ## Bluetooth Functionality This requires [some hardware changes](https://www.reddit.com/r/MechanicalKeyboards/comments/3psx0q/the_planck_keyboard_with_bluetooth_guide_and/?ref=search_posts), but can be enabled via the Makefile. The firmware will still output characters via USB, so be aware of this when charging via a computer. It would make sense to have a switch on the Bluefruit to turn it off at will. ## Bluetooth Keycodes This is used when multiple keyboard outputs can be selected. Currently this only allows for switching between USB and Bluetooth on keyboards that support both. |Name |Description | |----------|----------------------------------------------| |`OUT_AUTO`|Automatically switch between USB and Bluetooth| |`OUT_USB` |USB only | |`OUT_BT` |Bluetooth only |