nanoDLP

Fio

Member

Registered: 2021-04-08

Posts: 2

Slice appearing on LCD multiple times

Hi all,

Getting a strange error when going to print, multiple images of the print layer are appearing on the screen.

I've included some photos of what I'm getting at the printer vs what I should be getting. Tested this with multiple sliced STLs and the calibration cube 20mm2 all have the same issue

Anyone else had the same or similar issue?

Shahin

Administrator

Registered: 2016-02-17

Posts: 3,546

Re: Slice appearing on LCD multiple times

Checkout config.txt something is wrong there.

PropellerHat

Member

Registered: 2019-07-23

Posts: 35

Re: Slice appearing on LCD multiple times

"Checkout config.txt something is wrong there."

Wow, great help.

Have you managed to fix it?

I have the same issue, if I guess right how your screen looks. Like 4 or 5 silhouettes slightly on top of each other, spreading horizontally?

I have tried to set my 3840x2160 panel up for a solid workday now, and I just can´t get it to work. at its best I get this weird layer shift phenomenom. Trying now with my HD display, but the with same results.

I don´t think I  can crack this one. When the Rpi is starting, the stuff (raspberries and text) show perfectly. When it´s time to run this cursed Nanodlp system, disappintments after disappointment.

Pls share your config.txt if you found a solution

Shahin

Administrator

Registered: 2016-02-17

Posts: 3,546

Re: Slice appearing on LCD multiple times

It is highly depend on what manufacturers done on the driver side. If you are sure the display working correctly (including resolution) on boot time, you just need to put correct display type (mono, normal + fb / BCM) and resolution into nanodlp.

https://docs.nanodlp.com/guide/raspberry-pi-display/
https://docs.google.com/spreadsheets/d/ … edit#gid=0

PropellerHat

Member

Registered: 2019-07-23

Posts: 35

Re: Slice appearing on LCD multiple times

Hi

My boot screen shows perfectly now, and the calibration grid too. Some actual progress!!!! But when I try to print, I get a weird screen collage of part of the print repeated many times plus a stripe of boot screen (the text) and if I before tried the calibration screen, there is also part of that visible.

What??

I am running build 4550.

PropellerHat

Member

Registered: 2019-07-23

Posts: 35

Re: Slice appearing on LCD multiple times

how can I do what is proposed in here (https://docs.nanodlp.com/guide/raspberry-pi-display/) to get the hdmi timing data? Where do I put the command "sudo apt install read-edid"?

How do I ssh to my pi from nanodlp?

Shahin

Administrator

Registered: 2016-02-17

Posts: 3,546

Re: Slice appearing on LCD multiple times

1. If grid is fine, so everything is OK. The most probably plate itself sliced with wrong resolution you only need to reslice again.
2. SSH into pi nothing to do with NanoDLP. Any generic guide on it will be applicable.

PropellerHat

Member

Registered: 2019-07-23

Posts: 35

Re: Slice appearing on LCD multiple times

All right, I resliced yesterday and it looks good now.