Tim 🎮 @timixretroplays@digipres.club
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The code for this thing is dead simple - it reads from four buttons, then an if-then-else tree says what the servo does.

A regular servo gets commanded to positions expressed in degrees - 0 is fully one way, 90 centred, 180 fully the other. A continuous rotation servo like this one takes the same commands, but those values become relative speeds - so zero and 180 are full speed one way or the other, and 98 and 85 are the closest values I could get working for the slow feed option.

A screenshot of some computer code for the solder feeder being developed in this thread. There are three main sections - one defining the pins for the four buttons and the servo, a second setting the button pins to input and setting up the servo library, and then a decision tree commanding the servo to different directions and speeds based on which button is being pushed.
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