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A perfect robot wheel — Parallax Forums

A perfect robot wheel

localrogerlocalroger Posts: 3,452
edited 2012-08-10 20:18 in General Discussion
It's not erco-eBay cheap, but I recently got one of these:

http://www.allelectronics.com/make-a-store/item/DCM-351/24-VDC-GEAR-MOTOR-W/TURNTABLE/1.html

While the writeup calls the 5 inch wheel a "turntable" it's very obviously a wheel with perfectly fitted O-ring tire. Although the motor is rated for 24 volts it's also rated for 45 RPM at that voltage, which would with the 5-inch wheel be a very zippy 1 foot per second or so; it should run at more useful speeds at 12V or even lower. User reviews say it runs down below 3V and current draw is very frugal. The wheel is press-fit on, easily removed and reinstalled. If you were thinking of building a 200% scale model of a BOE-Bot it would be hard to find a cheaper and easier to use basis.

I only got one because I wanted the gearmotor, not the "turntable" / wheel, but when I got the assembly I was struck by how perfectly matched this is to a differential steering robot. I will be trying it out with the VEX robotics motor controller for 1-wire bidirectional servo style control soon; I'm interested in very low speed operation so I think the 7 volt maximum will be fine.

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