If you’re familiar with some of the other tutorials out on the Interwebs to modify servos for continuous rotation… you might be wondering what this guide has to offer.
Many of the mods / hacks I’ve seen use low precision resistors which will require you to poke around until you find what the servo thinks is center-position. That approach will require you to capture that value and use it as an offset in your software… which makes re-using your servos much more difficult. Using high-precision resistors is the way to go.
Cracking off a piece of the potentiometer housing is a quick and easy way to remove the servos rotational limits. It’s also a great way to make the servo wobbly and grind it’s gears; there is a better way.
Matched resistors give you sweet and smooth variable speed coming or going.
I guess you could just buy continuous rotation servos – but why buy when you can make!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.