Geeetech

Hi Mark,

I received finally a set of 10 AMS1117 3.3V.
I place a new one on the GTM32 and 3.3V appears again but unfortunately, once the STM32 boot, 2 - 3 seconds after the board hang up.
Take a look at the video.

https://goo.gl/photos/RogFHKHyKgiYfwDh9

I suppose i need a replacement board. What ...

Hi Mark,

Yes, 24 VDC and 5 VDC are correct.
On the pin 1 and 3 of the ams1117, 5VDC is there.

Hi Mark,

Exact, I have only 1,4 volt and that is not enough to start the microcontroller.
I will try to find a AMS1117 3.3V and replace it if you agree.

Best regards. Celian.

Hi Mark,

I switched and test the LCD cable. No matter.

As the board is "working" with a correct LCD display for a whole second, i suspect the microcontroller.
I tried to flash the firmware, no success even the STM32 USB device is well recognized by my computer.

https://goo.gl/photos ...

Hi There,

I bought a Geetech M201 couple days ago. Now assembled after facing small problems i solved with yout help on this forum.
I printed already several basic parts this afternoon when the printer & LCD freeze suddenly ??

Switch off / Switch off, i got a light lcd without nothing or sometimes ...