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what hardware should I use for wheel encoders.

asked 2013-01-13 13:28:22 -0500

packrat
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I am building a differential drive robot from an old powered wheelchair. The wheels are attached to the motor by a ~10:1 gearbox. I would like to add encoders to the motors. what kind of encoders should I use. I am running a full PC onboard. I have a chip kit max32 that I could use as an interface. What is the best way to add encoders. Is there a useful usb interface? What kind resolution should I look at. The motor drivers I am using do not have encoder feedback. Thanks for any feedback.

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At full power the robot can move about town miles an hour. Is it typical to use a dedicated device just to read the encoders? A device like"http://www.robotshop.com/phidgets-phidgetencoder-highspeed-usb-4-input-2.html"

packrat ( 2013-01-13 22:37:14 -0500 )edit

My other question is, what hardware do you guys recommend. 200 CPR encoder connected to an arduino?

packrat ( 2013-01-14 12:39:42 -0500 )edit

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answered 2013-01-13 17:14:56 -0500

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The encoder resolution depends on ur system demands,i.e, how fast do u want ur robot to go. If u need excellent low speed characteristics, it's better to have high resolution encoders. From the situation u've explained, I suggest u can use an ARM development board with high speed IOs to read the pulses outputted by the encoders, and communicate with ur PC via serial port like RS232.

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Asked: 2013-01-13 13:28:22 -0500

Seen: 570 times

Last updated: Jan 13 '13

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