Xylophone Eye-catching style plans photographs

A xylophone design plans of beautiful pictures that I've found: Electrical Project 201 built, wired and programmed by Jon S., Mark W., and Justin G. (University of South Carolina, Columbia) Poor video quality .. taken on my phone. Hopefully Jon will post something better some time soon. How it works ... 25 push-type solenoid wired to a PLC (programmable logic controller), each with its own key. Magnetic trigger, hitting the end of a mallet, which rotates around its own axis and

Make your own marimbas