I've built a Chameleon using an Arduino Uno with an Adafruit Motor Shield. Rewrote the Mk4 code for the shield, which seems to work. My problem is that Homing doesn't work in the sense that the selector can make a full turn without stalling. Is this because there is too much grunt from the driver to allow it to stall or do I have a mechanical problem?
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I will try reprinting the slides. The key mechanism seems to work, but there appears to be too much give in the plastic so it doesn't stall the motor or my screwdriver. I'll get back to you after reprint