PBP projects for R/C models


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  1. #11
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    Feb 2006
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    Default Cool chip for R/C PWM: 18F2431 series

    After reading about some of Bruce's cool projects with the 18F2431 series chips, I have been playing around with them for a little while. One thing that caught my eye is that they can do Power Control PWM as low as 19 hertz (while running at 40 mhz). Something you have to bring other chips OSC down to 0.5 mhz to do. This, and a few more of it's features, make it pretty nifty for creating PWM servo output. I mocked up a quick test, and have been able to do about 10bit PWM 1 to 2ms pulses at the proper 50 hertz spacing on 3 pins with the 18F2431. The larger chips of this series can do 4 pin PCPWM. I will post a little code once I get it cleaned up a bit.
    Last edited by ScaleRobotics; - 26th July 2010 at 18:15.

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