Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
JUst buy any foam wheel with a plastic hub (like from Dubro), drill through it to match a servo horn and bolt on the servo horn. Your local RC hobby store will have lots.
The big problem with using servo's as wheels for robots is the deadzone. Once you glue the pot down you're stuck with the 'center' position, and with temperature and voltage that center position can drift enough to cause the wheels to verrryy slowly turn requiring re-trimming periodically. Good for a quick project, but a more serious robot would be better off with one of those nice double gearbox/motor sets on the Pololu site, they're very reasonably priced. Only thing you need at that point is an h-bridge.
Those 3V gearbox motors pair beautifully with most bipolar H-Bridge ICs as the 1.4V drop makes a 5V source ideal. Much easier to use PWM hardware (set & forget) over Servo software.
I used him for roger and he worked great. This robot is a completely different style than other robots. It will have 4 wheels that are all powered, and each is connected to a servo that steers it.
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