Great interview Ken.

I have recently started to learn how to play a ukulele, and I mistakenly bought an electronic tuner without thinking it has LED tuning indicators.  I started to think about connecting either a vibration sensor or a microphone to an Arduino and knocking something up, then I heard this interview.

I have emailed the guys to ask them if the soundtrap board has any pins that might be capable of driving the acentric vibrating motor from an old mobile phone.  In this way I could maybe make a tactile ukulele/guitar tuner.

Soundtrap is an interesting project.  