Geeetech

OK, thank you for your help.

"Chinese culture is great and profound, it worth learning. :D "

Yes, it is. Some of my favourite music is Chinese Pure Land Chants. It is very beautiful and relaxing.

I should say that when I cut the USB 5 volt cable and try to connect it to the board under printer power the USB cable still becomes hot very quickly. It seems to be supplying high current on one of the USB data cables. I haven't measured it because leaving it on very long at all can damage the comp...

Yes.

I removed the board entirely and removed the stepper drivers. All cables are unplugged with only the USB plugged in and supplying power. It still fails with the sync error which means it is not talking to the computer. Something is destroyed when I turned on the power before trying to upload the fir...

Perhaps I should mention that I know some Mandarin and read a little Chinese because in this part of Canada there are over 500,000 people that have a Chinese dialect as a first language. It is the third most common language in Canada. In some parts of the Vancouver area nearly all store signs are in...

Something is very wrong on the control board. I was trying to upload the firmware but this time I turned on the main power before doing it. I reached over to check the USB cable to make sure it was correctly plugged in and the cable was very hot. I immediately unplugged it and fortunately there does...

When I turned on the main power this morning the firmware immediately became scrambled again, the same as before. I double checked the voltages from the supply and they are correct. I tried to upload the firmware again but it now gives me a sync error and fails. I will be doing some more troubleshoo...

I have finished the uploading and now have a correct display on the LCD. It is now late at night and I will try the machine tomorrow. Thank you for your help so far. I hope I can make it work but there are other issues that I must still correct. Those I can do but will take some machining work to fi...

Sorry to misunderstand. I see that you attached the firmware to an e-mail so that is what I need. I will report when I test it.

I am not finding what looks like the correct firmware for this board. The board is labelled Sanguinololu Rev 1.3a The Chip is Atmega 1284p
What folder contains the correct firmware?