A FT-232 USB to serial board is used to program the Arduino. A standard Bluetooth module has to have HID firmware installed. [Dastardly] makes a homemade daughterboard–er, shield–to connect ...

Irvine, Calif. — A single-chip Bluetooth human interface device has been released that enables wireless keyboards and mice at price points close to those of wired Bluetooth profile for human interface ...

This feature isn’t exclusive to the Leonoardo, as [Michael] explains in a build he sent in – the lowly Arduino Uno can also serve as a USB HID keyboard ... the Arduino Device Firmware Upgrade ...

I have to switch it to connect a "different device". None of it is a fault of BT or the keyboard specifically, I suppose I should have thought of that before getting this kb. I've read about HID ...

It could also allow devices programmed with Arduino "sketches" to interact with each other over Bluetooth 4.0—potentially allowing for the development of swarms of smart devices that can talk ...

So you've already outgrown Arduino's most beginner-friendly ... also equipped with features such as human device interface (HID) functionality, Bluetooth connectivity, and onboard sensors.

Have an old USB keyboard you love, but wish was wireless? DIYer DastardlyLabs shows off how to make your own little adapter that’ll convert just about any old USB keyboard to Bluetooth.