Just finished building my newly LR3.
I have done the motion test and everything runs, all steppers work, I moved it using the display and the knob.
I went ahead to the squaring, did my 4 points and measurements.
Tried to connect to my computer using repertier-host but got port COM error, my computer never recognized the board connected to my laptop, even though the board got powered by it.
given I couldnt use the commands to set the homing offset, I decided to try and do the crown test.
Did everything in the tutorial, made my g code, and because i cant connect via USB i tried using the provided SD card, saved the file, and the board just says No media.
I swapped the cables connecting the board and the display between them, and the display and knob control always work but i still cant connect via usb nor the SD card is being recognized. SD card is formatted fat32. the file is correctly a g-code file, i dont know what else.
The rambo needs 12V power even when just connecting to the computer. The skr does too, but there is a jumper to switch to being powered by the usb.
Start with the premade gcode at test crown. After that gcode works, you can try your gcode.
Try putting it in a folder inside the sd card. Some larger sd cards don’t work (or at least, they used to have some trouble).
There should only be one combination that remotely works. The rest should end up with a blank screen. We can help more once we know what controller you have. A picture would also tell us a lot.
