Alberto Alonso (Albund) wrote:
>
> In message <2.2.32.19961210091040.00a49eec@alfred.ccs.carleton.ca>,
 grkricor@cc
> s.carleton.ca writes:
> >Dear PIC'ers
> >
>
> [Deleted stuff]
>
> >Because of time constraints, I'd rather buy than build one, but building is
> >still do-able.  Perhaps it's nothing more than building a driver/buffer
> >stage between my Picstart and the application circuit?  Does anyone out
> >there have any good pointers for in-cicuit programming?
> >
> >Many thanks,
> >... Gregg
>
> I'm currently developing a serial programmer. The following will be some
> of its features:
>
> * Still the power from the computer. (No damm adaptor needed).
> * Connects to the serial port.
> * Smallest desing posible. I'm trying to fit it into the D-sub case.
> * Modularity. Have the posibility of connecting a 5 pin cable or
> adaptors with ZIF sockets.
> * Production quality. Verify the PIC for all ranges of voltages (this is
> just a wish which probably won't be able to do, at least on the size
> that I want).
> * RS232 comm capabilities? I was planning on using a MAX232 chip to
> handle serial communications using pins B6 and B7 (since most of my
> applications use the computer for communications). This might be
> implemented in a module due to size constraints.
> * Free??? My design will probably be free. I will plan on selling the
> kits to put it together or just sell the board (this depends on whether
> there is enough interest to send it to a production place).
>
> Anyway, the desing should be complited by mid Jan or Feb. Let me know if
> you guys are interested since that would make me do it faster and also
> how many of you would like to purchase at least the board (so that I
> send it to a production place).
>
> Cheers,
>
> Alberto

Take a look at
   http://www.ebar.dtu.dk/~c888600/newpic.htm
or
   http://www.gbar.dtu.dk/~c888600/newpic.htm

Programmer is not production quality. But it meets RS232 standards.
Vpp is 13V and Vcc is stable at 5.1V during read/program.

Regards,
Jens