This video shows a robotic glockenspiel playing Carol of the Bells. This instrument was constructed as a final project for the course "MIE438 - Microprocessors and Embedded Microcontrollers" at the University of Toronto.
The Microcontroller used is an Atmel AVR atXMEGA128a1. 25 individual solenoids are driven by opto-coupled mosfets on memory mapped latches on the external bus interface.
Is it possible to get more info on this project?
arashrahnama 1 year ago