Inside is Arduino Pro Micro and a PMW 3389 optical sensor on a breakout board. [Ben] was going to use flexible 3D printed panels as mouse buttons, but then had an epiphany — why not use keyboard ...

Features of the LightBlue Bean+ Bluetooth Arduino Micro-Controller include : – 3-axis accelerometer – Temperature sensor – RGB LED – 3.7V 600mAh LiPo battery – ATmega 328p @ 8 MHz clock ...

2. Extract to your Arduino library path, ex: C:\Users\username\Documents\Arduino\libraries, check it in your Arduino IDE, File->Preferences->Sketchbook Location 3.