GT2560

[waveguidetuner]

I have a 2 week old GT2560 Rev A board that has worked great in my 3D printer but suddenly yesterday it stopped working and I cannot communicate with it anymore.
When I plug it in to the USB port I see it appear on COM18.
But I cannot upload firmware to it, I get error: "avrdude: atk500v2_RecieveMessage(): timeout"
I am using Arduino version 1.6.5. Before, I had no problems uploading the firmware to it but now I cannot upload.
I cannot even read the fuses from the Atmel chip.
I tried the avrdude command avrdude.exe -v -c usbasp -p m8 -U lfuse:r:low_fuse_val.hex:h -U hfuse:r:high_fuse_val.hex:h
and I get this result:
avrdude.exe: Version 6.0.1, compiled on Apr 15 2015 at 19:59:58
System wide configuration file is "c:\Program Files\Arduino\hardware\tools\avr\bin\avrdude.conf"
Using Port : usb
Using Programmer : usbasp
avrdude.exe: error: could not find USB device with vid=0x16c0 pid=0x5dc vendor='www.fischl.de' product='USBasp'
avrdude.exe done. Thank you.


I have experience with Arduinos and I have an Arduino Mega2560 that I just tested on my computer and it works and communicates fine.

Any ideas what is wrong? Is it a FTDI USB problem?

When I connect to a USB port I see a couple of yellow LEDs blink but then they turn off and only the green LED is on.
Is there a schematic of the GT2560 board available to help me troubleshoot the problem?

[Cup]

Did you read this post?
http://www.geeetech.com/forum/viewtopic ... 20&t=17102
In addtion,I think you can try the board on another computer if you have.I have the problem a few days ago,and i can upload on one computer but can't on another one.I'm not sure what the problem is exactly...

[waveguidetuner]

I fixed the board, it was a bad/failed 16MHz crystal. I ordered a new crystal on Ebay, soldered it in the board, and the board works perfect now.

[Cup]

I fixed the board, it was a bad/failed 16MHz crystal. I ordered a new crystal on Ebay, soldered it in the board, and the board works perfect now.

Congratulations