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Agitating homemade PCBs with ease
If you want to make PCBs at home and you don’t happen to own a CNC mill, then you’ll probably need to turn to chemical etching. Use one of several different techniques to mask the blank PCB’s copper that you want to keep, then toss the whole thing into a bath to dissolve away the […]
If a container with a PCB in an etchant bath is sitting on top of the machine, that action will slosh the chemicals around and the agitation will dramatically speed up the process. The bearings provide a rotational interface between the stationary base (weighed down with poured concrete) and the pivoting platform. The Arduino just tells the servo motor to move back and forth endlessly, tilting the platform and providing constant agitation.
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