On Mon, Aug 09, 1999 at 04:32:31PM -0400, Karl A. Uscroft wrote:
> ----  Help,
>
> I just can't get any programmer that I build to work.  I've built a com port
> programmer but I didn't have the voltage out of my computer and now I've
> built David Taits Parallel programmer, and again it doesn't work.  So my
> question is has anyone had problem's with their home made programmers and had
> problems that they have found answers to, because I just can't get mine to do
> anything.

Yes, I had some problems with my own PIC programmer
(http://www.ise.pw.edu.pl/~wzab/picprog/picprog.html).
The problems were caused by too long flat ribbon cable between programmer and
printer port.
I've added a simple RC-filters (see my web site) and introduced small delays
into the programming software. Now everything works fine!
--
                        Wojciech Zabolotny
                        wzab@ise.pw.edu.pl

http://www.debian.org  Linux - free OS for free people!