Geeetech

i have the A20T and running my marlin 2 build 460 on it the link is in my signature to my main post & GitHub & YouTube. i personally prefer cyclops rather then mixing control system on my 2 in 1 and 3 in 1 hotends it has far less issues then mix. Can you explain some for those of us still learning ...

orange on top and black on top is the working config

William wrote: ↑

Mon Dec 16, 2019 9:07 am

Hi, If so, you can provide your purchase method and your country, provide your order number and email address.

Hi,

I ordered it on November 24, 2019 from Amazon.com Order# 114-7471666-4895421
In the USA,

My email address is: [REDACTED]

Thanks man, seems like you got lucky and got a bootloader on yours, Mine is getting returned to amazon monday if I don't get any advice on how to fix this --- sad too as this printer has so much potential. Hi,Are you trying to press and hold the printer reset key while you select upload firmware? y...

who do I contact to get motherboard replacement. I ordered this from Amazon?

THE PROBLEM is that many of the A20T's were shipped without a bootloader, so you can't flash the firmware AT ALL. I'm asking specifically about how to connect a Ardunio Nano board to the Gt2560 V4 Board to use the Nano as a programmer, so that I can install a boot loader. Can someone share the prope...

Oh, sorry my falut. you can refer to this post connect, and can you tell me why you can't flash. My printer doesn't seem to have a bootloader on it. I got a Uno to use as a programmer but I can't find the pins to connect now for the prorgamming interface for the GT2560 V4 board, can you show me tha...

Thanks man, seems like you got lucky and got a bootloader on yours, Mine is getting returned to amazon monday if I don't get any advice on how to fix this --- sad too as this printer has so much potential.

Hi,

Can someone share a photo of how to connect a Arduino Uno to the GT2560 V4 Board to use the uno as a programmer? My board doesn't have a boot loader installed on it, and i need to flash the firmware to enable 3dtouch.

Thanks

Leigh.

I'm pretty sure the issue with my printer is that there isn't a bootloader on the board. which is why AVRDude times out constantly. I've seen some videos on how to install a bootloader with a Arduino Uno... @William or someone from Geeetech can we get instructions on how to install a bootloader on t...