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Measuring Distance with Analog Potentiometers

By: Daniel
New: 08-01-2006 19:42
Updated: 08-01-2006 19:42
Total downloads: 2938 times


“Measuring Distance with Analog Potentiometers” explains how to use inexpensive analog potentiometers to determine the distance a robot has traveled with surprising accuracy, simplicity and no interrupts.

“Measuring Distance with Analog Potentiometers” explains how to use inexpensive analog potentiometers to determine the distance a robot has traveled with surprising accuracy, simplicity and no interrupts.

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20-01-2006 23:45

Chriszuma


Unread Re: White Paper Discuss: Measuring Distance with Analog Potentiometers

What kind of potentiometer are you specifically referring to? With all the pots I've encountered, they have a mechanical stop that prevents them from turning past about 270 degrees. I sincerely hope you're not suggesting taking apart a potentiometer and removing the mechanical stop.



21-01-2006 10:33

Joe Ross


Unread Re: White Paper Discuss: Measuring Distance with Analog Potentiometers

Quote:
Originally Posted by Chriszuma
What kind of potentiometer are you specifically referring to? With all the pots I've encountered, they have a mechanical stop that prevents them from turning past about 270 degrees. I sincerely hope you're not suggesting taking apart a potentiometer and removing the mechanical stop.
He gives one suggestion for a single turn continous rotation pot towards the end of the white paper. However, there are many more choices availible.



23-01-2006 21:57

Daniel


Unread Re: White Paper Discuss: Measuring Distance with Analog Potentiometers

Quote:
Originally Posted by Chriszuma
What kind of potentiometer are you specifically referring to? With all the pots I've encountered, they have a mechanical stop that prevents them from turning past about 270 degrees. I sincerely hope you're not suggesting taking apart a potentiometer and removing the mechanical stop.
There is a pot specified in the white paper. I heard that that company make them without a dead space. That is the best one to get.



26-11-2008 13:52

Joe Ross


Unread Re: White Paper Discuss: Measuring Distance with Analog Potentiometers

I've implemented a LabVIEW library for doing this with the new control system.

See here: http://forums.usfirst.org/showthread.php?t=10546

By the way, even if you don't use continuous turn potentiometers, everyone should look at the method Daniel uses for a cheap flexible shaft coupling.



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