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Problem using VEX shaft encoder
We have installed a VEX shaft encoder, connected to a digital input, on the shaft of a Fisher-Price motor. We have the routine that counts pulses from the encoder in the User Routines Fast section.
When the motor runs quickly, the encoder routine that counts pulses counts too few pulses. The spec sheet on this encoder indicates that it will handle ~ 1100 rpm. The FP motor is turning at ~100 rpm, so the shaft is not rotating too quickly.
Does anyone have any experience using this encoder, or any ideas on what could be causing this problem?
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Jerry Skene, mentor OOO OOO 2010 - Chairman's Award- DC OOOOOOOOOOOOOOOOOOOOOOOOOOO
Chantilly Academy, Team 612 - 2009 - Engineering Inspiration Award; Finalist - New Jersey
-----------------------------------2008 - Chairman's Award; Kleiner Perkins Award -Buckeye ---| ---Team Spirit Award - NASA/VCU
-----------------------------------2007 - Chairman's Award - NASA/VCU ---| ---Finalist; Kleiner Perkins Award - Chesapeake
-----------------------------------2006 - Chairman's Award - Chesapeake ---| --- Engineering Inspiration Award - NASA/VCU --
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