Society of Robots - Robot Forum
Mechanics and Construction => Mechanics and Construction => Topic started by: CJAlbertson on January 02, 2014, 08:21:23 PM
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I'm looking for the smallest, lowest cost gear motor that comes with or can be fitted with encoders. The task is simply to move over a solid indoor floor the biggest payload will be the battery. It's really just a software development platform. I must be looking in the wrong places, some one must sell low power motors with encodes
Those plastic $6 gear motors might be enough but I don't see a way to do odometery with them
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Sounds like you just need encoders on the wheels. Check these (about half way down the page):
http://www.pololu.com/category/7/sensors (http://www.pololu.com/category/7/sensors)
you can also build encoders yourself with LED and phototransistor.
If you need a decent quality gear motor check Pololu's selection. If used their micro and mini gear motors and they work well.
http://www.pololu.com/category/22/motors-and-gearboxes (http://www.pololu.com/category/22/motors-and-gearboxes)
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What's wrong with these motors with built-in encoders?
http://www.pololu.com/product/2286 (http://www.pololu.com/product/2286)
http://www.pololu.com/product/1445 (http://www.pololu.com/product/1445)
Or these, smaller, motors, which you can add encoders to?
http://www.pololu.com/product/2215 (http://www.pololu.com/product/2215)
http://www.pololu.com/product/2590 (http://www.pololu.com/product/2590)
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I'm looking for the smallest, lowest cost gear motor that comes with or can be fitted with encoders. The task is simply to move over a solid indoor floor the biggest payload will be the battery. It's really just a software development platform. I must be looking in the wrong places, some one must sell low power motors with encodes
Those plastic $6 gear motors might be enough but I don't see a way to do odometery with them
Yes it turns out you can, at least on the slower ones that have two output shafts. To answer my own question,
Look here http://www.ebay.com/itm/Smart-Robot-Car-with-Plastic-Tire-Wheel-1-48-1-120-DC-Gear-Motor-Encoder-Disc-/231130151482?pt=Apparel_Merchandise&var=&hash=item35d06e3a3a&vxp=mtr (http://www.ebay.com/itm/Smart-Robot-Car-with-Plastic-Tire-Wheel-1-48-1-120-DC-Gear-Motor-Encoder-Disc-/231130151482?pt=Apparel_Merchandise&var=&hash=item35d06e3a3a&vxp=mtr)
Added to the above you'd need one of those U shape IR switches too. Add another $2.
I was looking for cheap just to test some software, so I don't care about performance.