Radek

Was green originally black? 

That's why I wanted the photos to know that you have it connected correctly. You can't see anything at all from your photos! And even what can be seen is...

So is it connected according to the diagram? Did you adjust Marlin as recommended above?

We probably don't understand each other. I can't help you unless you can provide me with basic information. Maybe someone else will help you. Happy print.

Can you measure the electrical voltage at Gate transistor Q3? in the house when the heating nozzle is switched off and when the nozzle is to heat 

If you no longer have a problem, can you close the ticket?

Do you have a port defined in Marlin?

Either you have a damaged USB port on the SKR board, or you have problems with the drivers on your computer. Make sure that "unknown device" does not appear on...

> If you are blind as myself: There is a compiled bin file: https://github.com/ardiehl/BTT_SKR_13_14_14T_SD-DFU-Bootloader/tree/main/bootloader_bin/DFU-Bootloader.bin > And it works, thanks a lot @ardiehl! Hi, please do you have a link to...

Thank you very much As soon as a new processor arrives, I will try your guide.