GT2560 A+ Marlin 2.09 Serial connection
My older GT2560 controller failed, and replaced it with a newer GT2560 A+ model. V1.02 of the Marlin firmware was on it previously, and Repetier Host V 2.2.2 was fine connecting to serial port. Repetier host would do a hard reset on serial port but when LCD returned, would be able to manage the controller and motors and display settings.
New controller board with new marlin 2.0.x firmware installed, but when I hit the connect button, the LCD goes black and Repetier host would never connect. Tried Cura, and Cura can communicate with new GT2560 A+ and can move motors. Comm ports are baud rates are same as Cura, so I know the serial communications are good.
Any ideas ? Thanks in advance