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19th April 2008, 12:51 PM
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Problem with the optical encoders
Hi
i am trying to measure the speed of motor using optical encoders. so i took a floppy drive's optical encoder which, in floppy drive, was used to detect the presence of floppy disk. i took another pair of receiver and transmitter from a mouse. I am trying to measure it using microcontroller and when i plug these two sets of encoders the floppy drive's encoder works fine but the one i took from mouse doesn't. the voltage outputs for both receivers are; low(V) high(V) floppy drive 0.22 4.23 mouse 0.42 3.26 i can't use floppy drive's encoder due to its large field of view which can not read small notches in the encoder wheel. help needed. Thanks in advance Bye |
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