BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

pi_printer · 2021-03-31 11:50:06

Has anyone attempted to get the new BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD screen to work with Nanodlp.

I think this is the LCD the Longer 4k mono is using. It has pixels 31.5um(V)*10.5um(H). I presume it has three subpixels per pixel? Is there anything that could possibly mean it won't work with Nanodlp?

I have the config file Duobond have sent me if needed.

Shahin · 2021-04-02 05:35:08

With correct EDID any display with HDMI port with lower resolution than Raspberry Pi max config should work on it. Sometimes coming up with correct configs are difficult.

matt3o · 2021-04-02 09:13:27

I'm printing with that display right now. I tried the config duobond sent me but couldn't make it work.

The solution for me is to use a RPi 4. The following configuration is compatible with every 4K screen I've thrown to it, no matter the make/model mono or color. They all worked. DO NOT SET "monochrome display" in NanoDLP screen config.

hdmi_group=2
hdmi_mode=87

hdmi_ignore_edid=0xa5000080
hdmi_pixel_freq_limit=400000000

hdmi_cvt 2160 3840 24

max_framebuffer_width=2160
max_framebuffer_height=3840
framebuffer_width=2160
framebuffer_height=3840
framebuffer_depth=24
framebuffer_ignore_alpha=1
display_rotate=0x20000
hdmi_pixel_encoding=2

hdmi_drive=2

config_hdmi_boost=7

pi_printer · 2021-04-02 10:40:09

matt3o wrote:

I'm printing with that display right now. I tried the config duobond sent me but couldn't make it work.
The solution for me is to use a RPi 4.

Thanks, at least I know one person has it working. Did you buy a 4K video board from them as well? If so could you please link to it.

Do you think this might work with a RPi 3 or is it specific to the RPi 4? Is there any advantage with going with a RPi 4 with more than 1GB, other than if you were slicing on it?

Is anti aliasing working? Have you upgraded an existing commercial printer or is it one of you own design? If you have some prints to show that would be of interest.

matt3o · 2021-04-02 10:55:37

pi_printer wrote:

Thanks, at least I know one person has it working. Did you buy a 4K video board from them as well? If so could you please link to it.

Yes, I bought both the controller board and the screen. I don't have a link, I just emailed them and did everything via email.

pi_printer wrote:

Do you think this might work with a RPi 3 or is it specific to the RPi 4? Is there any advantage with going with a RPi 4 with more than 1GB, other than if you were slicing on it?

Initially I was using a RPi3 with a 4K screen (not mono), it totally works but it's a bit slow at refreshing the screen, so you have to add more pause before/after print. With a RPi 4 everything is snappier. I don't know if the BOE 4K mono works on the rpi3, I haven't tried, but it should. You don't need much memory, I have the 4GB version.

pi_printer wrote:

Is anti aliasing working? Have you upgraded an existing commercial printer or is it one of you own design? If you have some prints to show that would be of interest.

I literally just installed it and ran 2 test prints. I'm still calibrating the resin and the UV. I'll post pictures in the coming days. The printer was originally a shuffle 2018, but I changed everything inside, so basically only the chassis is the same now.

pi_printer · 2021-04-03 09:31:54

I literally just installed it and ran 2 test prints. I'm still calibrating the resin and the UV. I'll post pictures in the coming days. The printer was originally a shuffle 2018, but I changed everything inside, so basically only the chassis is the same now.

So you used a RPi 4, new hdmi board and lcd. The lcd obviously fits in the Shuffle?

Which UV source and power source did you use?

Did you also change the front screen, which one did you use?

Thanks for the help I'm hoping to do the same upgrade.

Looking forward to seeing the test prints.

Last edited by pi_printer (2021-04-03 10:34:07)

matt3o · 2021-04-05 09:39:48

pi_printer wrote:

So you used a RPi 4, new hdmi board and lcd. The lcd obviously fits in the Shuffle?
Which UV source and power source did you use?
Did you also change the front screen, which one did you use?
Thanks for the help I'm hoping to do the same upgrade.
Looking forward to seeing the test prints.

yes the screen fits, the UV source is a paraled2 but at approximately half power.

the case needs a little dremeling to fit a RPi4

I replaced the front screen with a standard nextion.

here the first print at 40um

few details

Last edited by matt3o (2021-04-05 09:40:42)

pi_printer · 2021-04-05 15:28:38

matt3o wrote:

yes the screen fits, the UV source is a paraled2 but at approximately half power.
the case needs a little dremeling to fit a RPi4
I replaced the front screen with a standard nextion.
here the first print at 40um

Looks very good for a first print. I presume you sliced it in Nanodlp? Did you use anti aliasing at all?

How and why did you reduce the power of the Paraled2?

I'd be interested in seeing what prints look like at 10um.

matt3o · 2021-04-05 16:09:02

I don't use nanodlp AA and I still have to calibrate AA on the slicer.

Paraled2 is too powerful for a mono display (they usually have low contrast)

pi_printer · 2021-04-05 17:10:46

matt3o wrote:

I don't use nanodlp AA and I still have to calibrate AA on the slicer.
Paraled2 is too powerful for a mono display (they usually have low contrast)

You did use Nanodlp to slice the model though?

How did you reduce the amps and to how many amps?

matt3o · 2021-04-05 17:32:51

I don't use nanodlp for slicing.

you can lower the power with PWM.

pi_printer · 2021-04-05 17:37:43

matt3o wrote:

I don't use nanodlp for slicing.

What do you use?

matt3o · 2021-04-05 17:39:12

prusaslicer or lychees

pi_printer · 2021-04-05 18:20:12

matt3o wrote:

prusaslicer or lychees

Could you please explain to me how you do slicing for your printer using Lychee?

I can only see the option in the Free Zone to export as obj and stl.

matt3o · 2021-04-05 18:22:09

you need to add a printer (the shuffle 4k is a good start), then you create supports and slice the model. The software exports a file that is just a zip with the PNGs inside. Rename to .zip and you can print with nanodlp.

pi_printer · 2021-04-05 18:29:53

matt3o wrote:

you need to add a printer (the shuffle 4k is a good start), then you create supports and slice the model. The software exports a file that is just a zip with the PNGs inside. Rename to .zip and you can print with nanodlp.

But your if you use the Shuffle 4k for example, it is a 4k screen with one sub pixel per pixel, where as your lcd is a 4k that has three sub pixels per pixel. The dimensions of the pixels are also different so surely the size and dimensions of your print will be wrong.

matt3o · 2021-04-05 18:34:30

a pixel is a pixel, no matter how many subpixels it has. you just need to define the screen resolution and the screen size

pi_printer · 2021-04-05 18:59:22

matt3o wrote:

a pixel is a pixel, no matter how many subpixels it has. you just need to define the screen resolution and the screen size

The Longer 4k seems to use the same lcd but it can use the subpixels as pixels to give a higher resolution (in one direction).

Using the Phrozen Shuffle 4k as an example I am able to change the x and y in mm of the screen in Pro only(which I don't have, is yours Pro?). But it won't let me change the value of width and height in pixels, and the vertical and horizontal resolution in um, it says "You can't modify this value in an official printer".

Would you mind screen shotting the printer settings page in Lychee.

Last edited by pi_printer (2021-04-06 04:57:10)

matt3o · 2021-04-13 10:21:10

manas wrote:

Hi, @matt3o
I am having same issues. The configuration sent by the company only works in printer/screen startup when I turn on the printer I can see the code on lcd running. After that nanodlp is unable to display image on LCD. Maybe my nanodlp machine settings are not correct. I also tried with your config settings file and same error I get nothing gets displayed by nanodlp on LCD. Although the initial code startup I can see on LCD when I startup the printer. What are your nanodlp parameter settings ? I set to NORMAL display and not MONOCHROME. Please let me know following parameters inside the nanodlp machine settings on which you made it work. Horizontal Resolution, Vertical Resolution, Display Controller, X/Y Resolution, Y Resolution, or any other settings that needs to be changed. Kindly share if possible.

do you set the framebuffer on nanodlp? I'll post my config as soon as I can

matt3o · 2021-04-13 10:47:30

manas wrote:

currently for 2k mono screens i didnt need to select any other option in nanodlp settings. Only the resolutions I modified and board change to MONOCHROME. For 4k 5.5 mono, I am guessing I will have to change multiple settings. If you could provide a screenshot of Machine Display Engine settings, it would be a great help

for my config to work you need to set the framebuffer in the display config. try with /dev/fb0, it should work.

Jonners59 · 2021-04-13 15:43:56

matt3o wrote:

I'm printing with that display right now. I tried the config duobond sent me but couldn't make it work.
The solution for me is to use a RPi 4. The following configuration is compatible with every 4K screen I've thrown to it, no matter the make/model mono or color. They all worked. DO NOT SET "monochrome display" in NanoDLP screen config.
hdmi_group=2
hdmi_mode=87

hdmi_ignore_edid=0xa5000080
hdmi_pixel_freq_limit=400000000

hdmi_cvt 2160 3840 24

max_framebuffer_width=2160
max_framebuffer_height=3840
framebuffer_width=2160
framebuffer_height=3840
framebuffer_depth=24
framebuffer_ignore_alpha=1
display_rotate=0x20000
hdmi_pixel_encoding=2

hdmi_drive=2

config_hdmi_boost=7

I see there are no

hdmi_timing=

Is that because you used this instead:

hdmi_cvt 2160 3840 24

?

That's a snappy bit of code.

Stevehoo · 2021-04-13 15:48:50

Just to add myself to this thread. My Duobond 4K 5.5 arrived this morning. It's going into to a Frankenstein Wanhao Duplicator 7. But, first, after reading the above (thank you deeply for the configs) I need to upgrade to a RPI4.

matt3o · 2021-04-13 15:48:57

Jonners59 wrote:

That's a snappy bit of code.

yes, on a rpi4 that code grants 4K on any screen I've tried, without any need of the timings. framebuffer only though

PS: I don't think you need "config_hdmi_boost" and it's probably ignored by the rpi4.

Last edited by matt3o (2021-04-13 15:51:20)

Jonners59 · 2021-04-13 16:07:23

matt3o wrote:

Jonners59 wrote:
That's a snappy bit of code.
yes, on a rpi4 that code grants 4K on any screen I've tried, without any need of the timings. framebuffer only though
PS: I don't think you need "config_hdmi_boost" and it's probably ignored by the rpi4.

Brilliant. I spent a year getting my RGB 4k to work. Works perfectly now, but if I had known... Anyway useful to know. I strongly suspect that the config matters not between 4K LCD monochrome and RGB. The settings seem much the same. The only real difference between any seems to be the timings and screen size. Could save a huge amount of work if this is the case!

matt3o · 2021-04-13 16:47:12

Jonners59 wrote:

Brilliant. I spent a year getting my RGB 4k to work. Works perfectly now, but if I had known... Anyway useful to know. I strongly suspect that the config matters not between 4K LCD monochrome and RGB. The settings seem much the same. The only real difference between any seems to be the timings and screen size. Could save a huge amount of work if this is the case!

I had it working on a 4K BOE RGB, 4K AUO RGB and 4K BOE mono. So far they all worked out of the box without timing but only on a rpi4. On the rpi3 as far as I can tell you need timing.

nanoDLP

#1 2021-03-31 11:50:06

BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#2 2021-04-02 05:35:08

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#3 2021-04-02 09:13:27

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#4 2021-04-02 10:40:09

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#5 2021-04-02 10:55:37

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#6 2021-04-03 09:31:54

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#7 2021-04-05 09:39:48

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#8 2021-04-05 15:28:38

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#9 2021-04-05 16:09:02

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#10 2021-04-05 17:10:46

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#11 2021-04-05 17:32:51

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#12 2021-04-05 17:37:43

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#13 2021-04-05 17:39:12

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#14 2021-04-05 18:20:12

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#15 2021-04-05 18:22:09

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#16 2021-04-05 18:29:53

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#17 2021-04-05 18:34:30

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#18 2021-04-05 18:59:22

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#19 2021-04-13 10:21:10

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#20 2021-04-13 10:47:30

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#21 2021-04-13 15:43:56

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#22 2021-04-13 15:48:50

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#23 2021-04-13 15:48:57

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#24 2021-04-13 16:07:23

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

#25 2021-04-13 16:47:12

Re: BOE 5.5" 4k Monochrome VS055QUB-NH1-DQP0 LCD

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