Encoder in schematic of MMBe

Bill Chennault

All--

What is the "ENCODER" referred to on page 9 of the MMBe datasheet on the Parallax web site? Can you describe what sort of device this might be? A simple hole counter? Hall Effect device? Something more complicated?

The maximum number of counts in my present application is 82 counts per minute, which represents 654 rpm. (Eight magnets mounted on a 3" diameter circle using a Melexis 90217 Hall-Effect sensor.)

Thanks!

--Bill
ps I would have posted the actual circuit, but SolutionsCubed copyrighted the·datasheet.

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You are what you write.

Franklin

www.acroname.com/robotics/parts/R253-WW02.html Here's one type. Some are just "hole counters" some use other ways of detecting the motor position. It all depends on how precise you need to be.

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- Stephen