Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !
This can also be used for connecting a traditional Arduino (or other microcontroller), as a keyboard or mouse, to a computer, without needing the micro to do USB. The PS/2 keyboard protocol is relatively easy to implement by bit-banging, and a gadget like this will do the work of converting that to USB. At least in theory!