Speed Controllers for Cheap Robots, Part 2: PID Controller

Hey! This is part two of a two part tutorial on how to make a speed controller out of a bottle cap and pen spring! If you haven't yet, check it out! If you like it, please consider voting for me in the Sensors contest! Thanks!Even if you don't plan to make those shaft encoders, this I'ble is still a...
By: JayWeeks

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