PIC Microcontroller Programmers

The CUMP Communitary Universal Microcontroller Programmer is in need of someone to restart development.

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Bootloaders

Q: "My Windowed part works one way usually and sometimes another, now I burned an OTP part and it behaves in the undesired of the two above."

A: You need to cover the window on /JW parts, then they'll not have memory contents affected by ambient light; I use a small piece of foil, covered by electrical tape, this is simple to clean, for erasing, and is very opaque to even IR light (Most electrical tape's transparent to IR light somewhat.) If you're doing repeated burns & erase cycles, can use a small piece of thick cardboard or something like that, you mainly want to block visible light (when indoors, which is where most of us work.)

Programming an '877 with a stripped down Tait (basically a cable) under Linux by Byron A Jeff

Can't re-program chip after code protecting the data eeprom

Can't program 16f8xx in traditional high voltage programmer?

Development Systems@ Compilers and Languages@

http://www.chipcenter.com/circuitcellar/february00/c0200dp1.htm Another Serial programmer, this one with some smarts.

Bala Chandar [Bala.Chandar at AVENTIS.COM] says:

I found one more circuit by the same author (JDM) with a few more components. That is working fine with the PIX program for programming my 16F84A PICs. It's quite fast too.

promero [promero at INSITEL.COM.CO] says:

...problem with my 17c766 circuit.

The problem wasn't located neither in the program nor in the configuration. The real problem was of the socket i was using. Apparently there is no compatibility with the ARIES 84pin PLCC socket and the cerquad of microchip, because i realized that contact was the real problem.

So be aware of this socket (mounted on the plcc to dip converetr i got) when prototyping...

Dan Michaels says:

You might check this out:

http://www.oricomtech.com/plc-adpt.htm

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