Attempt at cheap homemade version of Harmony

[Oran]

That's a good question I have no idea at the moment. I was just riding along and suddenly it stopped shifting. The Uno has been running fine since. Apparently if an input voltage is higher than the power supply to the Arduino it can damage the chip. That's not possible with my setup as everything is supplied from the Arduino's 5V supply unless its coming through the servo somehow. Seems unlikely and would only be a problem if the Arduino's onboard regulator failed. It was a cheap clone Arduino so it may just have been a bad one. I've just bought a pack of 5, should keep me going for a while.