I'd like to point out that the student who did that is a freshmen, new to the world of electronics and robotics. She stayed all night at our workplace to rewire that thing for the third time on the night from saturday to sunday before ship.
The idea itself comes from Don, one of our mentor, who randomly came to our workshop with two tennis racket some day and his particular look that tells us he just had yet another fun and functional idea.
Congrats to Lucy and Don
Francois.