gnupic: Re: [gnupic] more on first picprog attempt
Subject:
Re: [gnupic] more on first picprog attempt
From:
Robert Pearce ####@####.####
Date:
19 Jun 2006 18:43:16 +0100
Message-Id: <moEcgYCTGulEFwk7@jonah.huneausware.local>
On Mon, 19 Jun 2006, Jan Wagemakers ####@####.#### wrote :
>
>Interesting. Can you point me to a properly designed JDM-style programmer
>that works with my low-voltage (5.6V) laptop serial port.
If by "JDM style" you mean plugs into serial port and doesn't use an
external power feed then no - it simply isn't possible to do the job
right if you're trying to cheat like that.
As I said, I gave up on all the bad designs out there and did my own.
It's a parallel port one and uses a 12V power block (non-regulated),
readily available from Radio Shack or Maplin. Because I tend to do
things properly (as someone said, I sound like a hardware designer) my
circuit gives me three different Vdd levels so I can properly comply
with Microchip's ICSP specification. I'd offer to put the schematic (and
the driver code I wrote) on my web site, but we're trying to get someone
up and running and the "throw away what you've got and start again with
mine" answer isn't very helpful.
--
Rob Pearce http://www.bdt-home.demon.co.uk
The contents of this | Life is fraught with opportunities to keep your mouth
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