hacked GTP USB LITE pic programmer !!

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hacked GTP USB LITE pic programmer !!

Postby criss.ml » Tue Mar 18, 2014 4:43 am

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GTP USB LITE is a pic programmer based on the pic18F2550 disgned by SISPIC from spain
A lot of people built this circuit , but it became obsolete.. so i decided to hack the firmware...

GOOD NEWS
-Now it runs in windows, linux and mac .
-Now firmware is opensource..

instructions and info on how to do it , in my blog ...
http://www.valpoder.com/?p=268
Cheers!!!

GTP USB LITE= “GRABADOR TODOPIC-USB summer 2005″
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Re: hacked GTP USB LITE pic programmer !!

Postby oakkar7 » Fri Mar 21, 2014 3:41 am

Oh..,

I have this one and face the same problem also.
Thanks for sharing criss.ml.
I will try it.
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Re: hacked GTP USB LITE pic programmer !!

Postby criss.ml » Fri Mar 21, 2014 4:43 am

Hello OAKAR:

Where are are you from ??
Please share this info with other GTP USB owners... i even made a tutorial in spanish...

Sispic censored this info from todopic.com.ar forum , as he wants too keep selling his firmware...

troubleshooting will help other users, so please post any questions...
Cheers
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Re: hacked GTP USB LITE pic programmer !!

Postby oakkar7 » Tue Mar 25, 2014 12:35 pm

Hi criss.ml,

I flashed it and it work well in both XP and Windows 7 :D.

I am from Myanmar. Some of hobbyists in my region use this programmer and I will also share this info to them.
One of local supplier sold this beautifully made sandwich style programmer.
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As your guide, simply remove PIC and flash booloader first. Then replace crystal with 8MHz. Finally, reconnect programmer and updated firmware (I updated ver 0.5.0). Then connect RB6 (Pin27) to ground.
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BTW, I noticed that LEDs are connected at PIC pins 11,12 and 13 in USBPICProg and pins 27,28 at GTP-USB-Lite. So, I simply cut the trace from RB7,RB6 (pin27,28) and connected to Pin 11,12. LED shows signal now.
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Mostly, I used PICkit2 as main programmer. For now, I can use reborn USBPICProg as a backup programmer.

Cheers!

Image
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hacked GTP USB LITE pic programmer !!

Postby criss.ml » Tue Mar 25, 2014 2:46 pm

Hello oakkar !

This is great news !! Now even the leds work. :)

Thank you for the pictures !!!
This will encourage others to hack gtp usb !!

Cool beans and congratulations !!


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