But with the ProtoArc XKM01 Keyboard and Mouse Combo, I never missed a beat. This foldable keyboard combo feels great to use, is ultra portable, and a cinch to set up quickly for peak comfort working ...

Instead of spending $149 on Apple’s standalone Magic Trackpad, Taliyah Huang designed and built a custom split keyboard with its own mouse and trackpad functionality built right in.

The keyboard is a custom build from [Taliyah Huang] which uses a pair of Arduinos, one in each half of the keyboard, to communicate key and mouse information to a third Arduino which is plugged in ...

The idea early on was to leverage existing Arduino libraries to connect with a standard USB mouse, specifically, the hardware would take the form of an Arduino Mega 2560 with a USB Host Shield.