LCD Screen not scrolling

Mostly Printed CNC - MPCNC Troubleshooting
1

Hi everyone. I just finished my build of a 24"x24" MPCNC, and have been having some difficulties with the LCD screen. I bought the complete rambo 1.4 with the lcd directly from V1 engineering .

The screen seems to be booting fine, all the logos showing up on boot. The home screen seems correct also, displaying x,y,z etc…

I can click the knob into the sub screen, but that is where I run into issues, I can’t scroll up or down with the knob. I can only click back to the main info screen.

Not sure what to do to remedy this?

 

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2

Try physically swapping the cables. they tend to use different wires. Also look for solder blobs around the knob pins.

3

Hi Ryan,

No blobs on the pcb near the knob, and I tried swapping cables with no effect. Also attempted a marlin reflash, and now I have a lit but blank screen.

 

4

Marlin was good if you were getting a picture.

You must not have flashed my marlin if it is blank now.

5

Might have gotten the wrong version? I followed your links to your github, any chance you can give me a direct link? Thanks!

6

Hey Ryan.

Found the MPCNC specific marlin, downloaded and flashed the board. All is well, scroll is working correctly now too.

 

7

Cool!