Quote:
Originally Posted by Tim Arnold
What is that circuit board precariously positioned near the outside? IR board?
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Quote:
Originally Posted by Cow Bell Solo
Is it a line sensor/light reflective sensor?
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It's a perfboard that mounts the pot that acts as PID loop feedback sensor.
A steel pinion drives the steel rack. A plastic gear on the same shaft
drives a plastic gear attached to the potentiometer. The sensor gearing
matches most of the full range of the pot to the full range of the rack to
provide better resolution for the PID loop.
It's looks more fragile than it is. Its protective cover is removed in the
photo. Perfboard is unfortunately a bit ugly but still works well.