The Trill I2C library targets Arduino and Bela ... Trill Bar: 101 x 22 mm linear touch sensor The Trill Bar is a 101×22 mm sensor that can detect up to five simultaneous touches on a single ...

[mircemk] shows how to create a simple non-contact proximity sensor using little more than an Arduino Nano board ... a spring elegantly used as a hidden touch sensor that works through an ...