Subject:
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Controlling motor speed/frequency
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Mon, 28 Sep 1998 01:30:36 GMT
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Original-From:
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edmund <ho106@singnet.#spamcake#com.sg>
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Viewed:
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1156 times
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hi all
does anyone know if there is a way where we can increase the
output frequency of the motor PWM output?
i did a test by typing " motor(0,50) " and connecting a probe to
Motor 0 +ve and to the L293D gnd pin respectively. the reading
on the oscilloscope showed that the frequency was 500Hz. i tested
various variations (from motor(0,0) to motor(0,100)) and found
out that the output freq. range was from around 250-500Hz. i
require around 1000Hz for my project.
a quick look at the lib_ic, lib_r22 and lib_hb files didn't help
as i'm still a beginner at C-programming. Fred, i believe you wrote
the routines in those files, could you tell me what 0x0e is? is
it the address of a register/port? and can we change the speed/
frequency of the PWM by modifying the routines?
edmund
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