Made further modifications to the original circuit of the barn door tracker.
Put a voltage divider on the output side. 100 and 330 ohm resistors. Pulling output now from the 330 channel. Now I can vary the volts from 0.6 to 3.6. It looks like 1.35 volts is the around the sweet spot turning the motor at 4 RPM. And that's 2.5 turns (out of 10) on the pot. Before I was less than 1 turn from the end. I suppose there are different VRs that would work but I have lots of resistors kickin' around.
Monday, October 13, 2014
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