HPWM problem .. pls help!

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  1. - 21st March 2005, 04:08 #10
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    Samuel Guest

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    Default 5Khz limit ... hmmm

    Well right now after playing for a whole afternoon with different conbinations of duty cycle and frequency, the HPWM 1, 135, 3000 seems to work well for me .. at high frequencies my motors start doing funny stuff .. I feel this may have to do with the how the 293D is setup. I have my two PWM lines, one going into each of the enable. And then 4 control lines, 2 for each motor. There is another way of setting up, which can reduce the number of lines by using an Inverter. Since this setup is working for me, and i have enough ports on my PIC controller, i'm not gonna try that for now ... I just have to find someway to keep the 293D cool .. Someone suggested to use some kinda paste .. tooth paste??? And then what?
    Last edited by Samuel; - 21st March 2005 at 04:11.
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