GrovePi helps you build your own smart devices. The Base Kit includes the GrovePi board and 12 Grove sensors so you can build anything from a weather station or plant monitoring station to a MINECRAFT controller or automated rain notifier. Raspberry Pi sold separately.
The Grove 12 button Capacitive Touch Keypad is built around the ATtiny1616, an AVR® 8-bit processor running at up to 16 MHz. ATtiny1616 is a low-power, high-performance chip integrated QTouch® peripheral touch controller which supports capacitive touch interfaces with proximity sensing and driven shield. With this module, you can easily create an arduino password keypad or a DIY phone keypad.