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looking for motor advice

asked 2021-11-17 21:24:03 -0600

PGTKing
13 ●16 ●28 ●38

updated 2021-11-17 21:27:50 -0600

Hi guys looking for advice on what motor to buy. I have a robot arm in gazebo simulation that I send random forces to and the arm learns to associate what force should be sent to be in a desired joint. So I need a motor that receives a voltage and outputs a position in radians or a degrees. I have been playing around with a small dc motor and power supply and noticed it goes faster the more voltage I send it, I now need to know what position the motor is in. My friend who knows about hardware told me I need an encoder and decoder, but I don't know how either of those would work with my motor. Can I get some product links from digikey or other online product retailers? thanks.

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answered 2021-11-18 08:06:42 -0600

fergs

13902 ●59 ●157 ●196 http://www.robotandchisel.com

updated 2021-11-18 08:06:54 -0600

Robot arm motors are generally "servos" - that is a motor (usually with a gearhead) coupled with a controller and encoder for position feedback. There are a variety of manufacturers of servos out there - from small hobby-sized ones up to full size industrial arms. One of the smaller hobby size servo families that have pretty decent support in ROS would be the Dynamixel servos from Robotis.

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Asked: 2021-11-17 21:24:03 -0600

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Last updated: Nov 18 '21

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