USB Keyboard to Bluetooth with the “HID Relay”

If you need a Bluetooth keyboard, they can certainly be purchased. On the other hand, if you have a spare keyboard, or perhaps one that you’re really attached to that you need to be wireless, the “HID Relay” hack described in the video below should show you how to get rid of the wires.

This build uses items including an Arduino Pro Mini of the 3.3V variety, a hacked HID Bluetooth module, and several other components. This method has worked with all of the keyboards that “DastardlyLabs” has tested it on, as well as most mice. One exception was a “gamingish” mouse that did give him some problems; perhaps it was delivering too much data to the HID Relay system.

In addition to the video below, this project is outlined in much more detail here and here, where DastardlyLabs actually puts one together.

[h/t Hackaday]