An Arduino mini pro provides the brains. 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 homemad ...

Unfortunately, though, no USB charging cable is provided ... battery, Aldi's Bauhn Mini Retro Bluetooth Speaker is definitely ...

The Asus USB Adapter with Bluetooth features a compact ... The Kretech Wireless Mini Bluetooth adapter is another option worth considering if you want to create a cable-free connection between ...