At 12:32 31/03/1997 -0500, you wrote:
>
>        I am working on my first (complex) PIC program.  Using a PIC16c57
>at 4MHZ I am sampling the servo outputs from a R/C Reciver to convert them
>to  PWM signals for 2 motors and using steps from the other 2 channels for
>non PWM stuff.
>
Check the following URL:

        ftp://ftp.luth.se/pub/misc/rc/plans/electro

You will find a project named RX.ZIP or RXLIGHT
Note this program was completely simulated with UMPS before an SMD OTP
implementation on a PIC16C57:

        http://idls.izarbel.tm.fr/entp/techer/P01.HTM

I do exactly the same thing 2 years ago but for a FM receiver and using
also a 16C57. Main problem you will have, will be:
        - sampling problem (I was using a 10 microsecond loop)
        - servo jitter due to sampling rate, even if you use a 1 microsecond
loop there will be always jitter on servo output. This is mainly due to the
time quantification and can be avoid a little using a numerical filter.
I implement a kind of filter in my receiver software. The project contains
an english WORD document which explain that.

Best regards,
        Philippe.

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