Steve and Ed got the ULN2803 driver board wired up to the Megaduino
and the solenoids on the xylophone. After a few software tweaks,
Steve could send standard MIDI from his computer to play the
xylophone.
The note mapping hasn't been written in this version, so the right
notes aren't played when he hits the keys on his virtual keyboard. In
fact, they're not even in order!
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