Geeetech

Hello, I found this doc http://reprap.org/wiki/Geeetech_GT2560 comparing to ICSP socket http://www.google.it/imgres?imgurl=https://www.olimex.com/Products/AVR/Programmers/AVR-ICSP/resources/AVR-ICSP.gif&imgrefurl=https://www.olimex.com/Products/AVR/Programmers/AVR-ICSP/&h=187&w=343&tbnid=mnP9xdF9KM6...

Thank I am not really expert to arduino hardware I was thinked that is it possible to find some ICSP pin around the board, but probabily is not the case

Hi Eric,

thank you, by watching picture it seems only power cable and fan cable is different. isn't it? Are Termistors compatibile?

Marco

Hello i have a prusa i3 b with gt2560 broken I would like to know if I can buy a standard mega 2560 + ramps 1.4 flash prusa b 2560 firmware and swap cables : it work witout software/hardware modification? I don't like that much this gt2560 too many problems.

Yep, maybe there is some hidden pins to connect

Hello,

is it possible to reflash bootloader of 2560 in my GT2560? I don't find a suitable ICSP interface, could you please provide a pinout?

thanks

Thanks eric, It's gt2560 problem board is visible via serial but can't upload firmware for the well know avr timeout problem. How to solve?

Thanks

Hello I found this bug in the bootloader of 2560 board

https://code.google.com/p/arduino/issues/detail?id=392

It should be our case. I found in the code in source Marlinmain.cpp a "!!!" in a text. I try to remove it but I am stuck I can't upload cause of the error.

Marco

Hello I have same problem,

print work correctly few times and after that start with these blocks

Marco

Hello,

I have the same problem, printer work 10 time than display shows blocks

Ho to solve?