Hi there,

I have a GT2560 Rev A+ Board and installed Marlin 2.1.2.4 on it.

I made not much changes. Only configured the right Board and Type of Stepper drives. Everything else is Basic configiuration.

But it is Not possible to connect to the board.
Tried it with repetierHost and Octoprint. No Connection possible.

Any ideas?

Cheers!

Its a mega2560 board you need to enable #define SERIAL_PORT 0 And #define BAUDRATE 115200

UART 0 is connected to a usb to serial chip. Normally a ch340 chip. If you using windows you need to install drivers for the OS to see port

Thank you!
I installed the Driver as written at the GT2560 Wiki:
CDM 2.12.36.2

In the hardwaremanager the devices
- USB Serial Port
- USB Serial converter
are using this driver.

So far, so good.

But I can only select COM Port 1 as the lowest. Not 0.

I also changed Baud-rate to 115200. But connection between octoprint or repetierhost still doesn‘t work.

COM ports are windows/dos operating system ports

SERIAL_PORT is Marlin firmware controller serial port


One has nothing to do with the other

------------------    usb cable       ------------------------
| windows  Com 1 |--------------------| Marlin SERIAL_PORT 0 | 
------------------                    ------------------------

Those driver are for FT232RQ chips not ch340 chips.. fairly sure your board has the later.

Look at your board, see the chip behind the usb port, what does it say written on the top of it?

Edited 1 time(s). Last edit at 10/06/2024 12:17PM by Dust.

Also make sure your using a data usb cable. Charging usb cables do not have the required data io lines