a real homemade pic programmer with ICSP capabilities

Started by ydexter March 22, 2004
Hello,

I want to bring in attention an old subject but in another light. I
use JDM programmer as a PIC serial programmer. I read that it supports
ICSP but I'm not sure.

My question is what is a good programmer on the web with all those :
- can be build home (no problem if many components involved)
- has a true power supply, to avoid hazardous signaling
- respect microchip programming standards for PIC
- can deal with all (at least most popular) PICs
- can be use with a software programmer (windows or freebsd OSes)
- can support ICSP ( is this related to the programmer or not? )

As I said , I use JDM serial programmer, but from what I saw on the
schematic description, there are some spikes in the signal, the power
supply and signals are not so true generated, and I experienced some
failures if I used serial cables longer than 1 m.

I can't spend $100 for a microchip pic programmer, you know with $100
you can buy a powerful GPU graphic card, which is far more powerfull
than a PIC programmer.

thanks



--- In , "ydexter" <ydexter@y...> wrote:
> Hello,
>
> I want to bring in attention an old subject but in another light. I
> use JDM programmer as a PIC serial programmer. I read that it
supports
> ICSP but I'm not sure.
>
> My question is what is a good programmer on the web with all those :
> - can be build home (no problem if many components involved)
> - has a true power supply, to avoid hazardous signaling
> - respect microchip programming standards for PIC
> - can deal with all (at least most popular) PICs
> - can be use with a software programmer (windows or freebsd OSes)
> - can support ICSP ( is this related to the programmer or not? )
>
> As I said , I use JDM serial programmer, but from what I saw on the
> schematic description, there are some spikes in the signal, the
power
> supply and signals are not so true generated, and I experienced some
> failures if I used serial cables longer than 1 m.
>
> I can't spend $100 for a microchip pic programmer, you know with
$100
> you can buy a powerful GPU graphic card, which is far more powerfull
> than a PIC programmer.
>
> thanks


There are a couple other considderations.

One is that you can buy a programmer from MicroChip for under $50.00.

You can buy the Wisp628 for under $30.00

or a JDR kit for around $20.00

all support ICSP, and Wisp is strictly ICSP.

Second thing goes to the cost of making something.

How much would you charge to make me a pencil ? you would need to
get the wood, the lead, some metal and rubber, along with some paint.

Don't worry about sharpening it, I can do that part.

And remember, I can buy one already made for about 25 cents. Dave




I got your idea, but you know , some people will try to 'make'
something what costs almost 1/4 from the month wage!
So I 'm still with the idea of making the programmer home. Too bad is
I don't have the schematics from well known good programmers. I will
try to use JDM, but I must be somehow sure the debug problems are not
from bad PIC programming.
The other part is I really really don't like black boxes. And the
surprise in bigger when you open a black box which you paid already
for and you see there are just a few 25 cents components each.

> Second thing goes to the cost of making something.
>
> How much would you charge to make me a pencil ? you would need to
> get the wood, the lead, some metal and rubber, along with some paint.
>
> Don't worry about sharpening it, I can do that part.
>
> And remember, I can buy one already made for about 25 cents. > Dave





--- In , "ydexter" <ydexter@y...> wrote:
> I got your idea, but you know , some people will try to 'make'
> something what costs almost 1/4 from the month wage!
> So I 'm still with the idea of making the programmer home. Too bad
is
> I don't have the schematics from well known good programmers. I will
> try to use JDM, but I must be somehow sure the debug problems are
not
> from bad PIC programming.
> The other part is I really really don't like black boxes. And the
> surprise in bigger when you open a black box which you paid already
> for and you see there are just a few 25 cents components each.

That is a different story. There are people who have access to old
electroncis, but not new stuff, and some people would rather make a
pencil than buy one, just for the fact they can.

If I am correct, programmers are only trying to get certain voltages
to pins at certain times. the sequence is important, but how they
get there is not. ie: one can use transistors or a PIC, depending
what one has on the bench.

A single chip unit (18 pin) is really the same as having a socket for
an 8 pin, an 18 pin, a 28 pin and also a 40 pin on the board. The
idea of the single socket type is just small board size.

There are quite a few schematics on the web that detail different
levels of programmers from a one wire (one resistor) to things like
the WARP that does both Atmel and PIC chips.

here is a very simple unit.
http://webspace.webring.com/people/jl/leon_heller//pic.html

and go thru this site and see the different programmers that the
software supports.

And if you want something even better, check out Wouters Wisp628.

Dave



And if that pencil had a ZIF socket on it like most good PIC
programmers, you can tack on another $25 just for it.

BRW

> Second thing goes to the cost of making something.
>
> How much would you charge to make me a pencil ? you would need to
> get the wood, the lead, some metal and rubber, along with some
paint.
>
> Don't worry about sharpening it, I can do that part.
>
> And remember, I can buy one already made for about 25 cents. > Dave




also for some persons in countries with small currency, like ours, it might
be over 300% of your monthly wages.
eg: picstart+ in India is around 18,000 indian currency.
and average salary for a professional at entry level varies from 4,000 to
6,000 in an average size company.

So homemade is the only alternative.
Cheers
Amish
----- Original Message -----
From: "ydexter" <>
To: <>
Sent: Monday, March 22, 2004 11:01 PM
Subject: [piclist] Re: a real homemade pic programmer with ICSP capabilities > I got your idea, but you know , some people will try to 'make'
> something what costs almost 1/4 from the month wage!
> So I 'm still with the idea of making the programmer home. Too bad is
> I don't have the schematics from well known good programmers. I will
> try to use JDM, but I must be somehow sure the debug problems are not
> from bad PIC programming.
> The other part is I really really don't like black boxes. And the
> surprise in bigger when you open a black box which you paid already
> for and you see there are just a few 25 cents components each. >
>
> > Second thing goes to the cost of making something.
> >
> > How much would you charge to make me a pencil ? you would need to
> > get the wood, the lead, some metal and rubber, along with some paint.
> >
> > Don't worry about sharpening it, I can do that part.
> >
> > And remember, I can buy one already made for about 25 cents.
> >
> >
> > Dave >
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