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#1 2020-07-23 05:59:43

sandong69
Member
Registered: 2020-01-05
Posts: 11

mono lcd

I want to use mono lcd.
so i want to get 8bit sliced .png image.

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#2 2020-07-23 09:48:34

Shahin
Administrator
Registered: 2016-02-17
Posts: 3,536

Re: mono lcd

It should be taken care by display controller. But if you believe it should be handled on nanodlp side, you can use framebuffer support as nanodlp adopt to bit requirement automatically.

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#3 2020-07-24 01:09:15

sandong69
Member
Registered: 2020-01-05
Posts: 11

Re: mono lcd

In order to use a mono lcd, the image in the way that the mono lcd wants must be transmitted by HDMI.

1. slice picture
[v0001/h0001],[v0001/h0002],[v0001/h0003],[v0001/h0004] ... [v0001/h1618],[v0001/h1619],[v0001/h1620]
...
[v2560/h0001],[v2560/h0002],[v2560/h0003],[v2560/h0004] ... [v2560/h1618],[v2560/h1619],[v2560/h1620]

2. Picture Processed
{[v0001/h0001],[v0001/h0002],[v0001/h0003]},{[v0001/h0004] ... {[v0001/h1618],[v0001/h1619],[v0001/h1620]}
{v0001,h001}                                          ,{v0001,h002     ... {v0001/h540}
...
{[v2560/h0001],[v2560/h0002],[v2560/h0003]},{[v2560/h0004] ... {[v2560/h1618],[v2560/h1619],[v2560/h1620]}
{v2560,h001}                                          ,{v2560,h002     ... {v2560/h540}

3. HDMI control board and LCD
{v0001,h001}                                          ,{v0001,h002     ... {v0001/h540}
...
{v2560,h001}                                          ,{v2560,h002     ... {v2560/h540}

so i want to know the method or setting of nanodlp which make (1. Slice picture) image.

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#4 2020-07-24 07:00:54

Shahin
Administrator
Registered: 2016-02-17
Posts: 3,536

Re: mono lcd

#1 and #3 seem similar to me, single buffer with stride which is usual way to transmit images. Not sure what you want differently. Please, share document or online technical page defining what you need.

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#5 2020-07-24 11:18:16

Shahin
Administrator
Registered: 2016-02-17
Posts: 3,536

Re: mono lcd

After rereading documents couple of times I did understand what it means.
It is possible to support it but why they chose nonstandard way of doing something easily could be done by standards is very strange.

Is there any software supporting DUOBOND?

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#6 2020-07-24 11:53:32

Shahin
Administrator
Registered: 2016-02-17
Posts: 3,536

Re: mono lcd

Will add support, we already have automated mode detection for RGBA channel. Issue is this board being detected with wrong spec and mode should be defined manually on the software side.
Are you available for the beta testing this?

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#7 2020-07-24 20:40:31

Shahin
Administrator
Registered: 2016-02-17
Posts: 3,536

Re: mono lcd

Please, try the latest beta. Choose monochrome display from the settings / display category.

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#8 2020-07-25 09:54:04

Shahin
Administrator
Registered: 2016-02-17
Posts: 3,536

Re: mono lcd

You should use nanodlp itself to reflect as it modify on fly.

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#9 2020-07-27 04:41:06

sandong69
Member
Registered: 2020-01-05
Posts: 11

Re: mono lcd

Thank you so much for your quick fix.
I upgraded to beta version(3433). And I modified "Display Controller" to "Non-Standard Monochrome".
And I regenerated plate.
In Preview page, I can see correct size image in LCD.

Thank you so much

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#10 2020-10-04 14:44:46

Artemy
Member
Registered: 2020-10-04
Posts: 1

Re: mono lcd

Hello Shahin!   have a problem with connect 6.08 mono display. Screen is DXQ806, with driver board. Use last beta build. Screen shows almost nothing

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#11 2020-10-07 19:44:44

Shahin
Administrator
Registered: 2016-02-17
Posts: 3,536

Re: mono lcd

It is most probably config.txt related, you need to adjust HDMI settings based on your display specs.

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#12 2020-11-10 07:18:33

scud
Member
Registered: 2017-10-19
Posts: 2

Re: mono lcd

Artemy wrote:

Hello Shahin!   have a problem with connect 6.08 mono display. Screen is DXQ806, with driver board. Use last beta build. Screen shows almost nothing

806 or 608?  im have 608 and he dont work

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#13 2020-11-10 08:07:45

scud
Member
Registered: 2017-10-19
Posts: 2

Re: mono lcd

Shahin wrote:

It is most probably config.txt related, you need to adjust HDMI settings based on your display specs.

DXQ608

force_trubo=1
gpu_freq=300
core_freq=400


# HDMI Љо–{ђЭ’и Basic configuration
hdmi_pixel_freq_limit=400000000
hdmi_timings=540 0 70 10 56 2560 0 50 2 20 0 0 0 50 0 89750000 0
hdmi_drive=2
disable_overscan=1
max_framebuffer_width=2560
max_framebuffer_height=2560

# Portrait or Landscape Setting
#Portrait-1 (ѓtѓЊѓL‚Є‰є, Flexible cable is bottom side.)
display_rotate=0
framebuffer_width=540
framebuffer_height=2560

# Landscape-1 (ѓtѓЊѓL‚Є‰E, Flexible cable is right side.)
#display_rotate=1
#framebuffer_width=1920
#framebuffer_height=1200

# Portrait-2 (ѓtѓЊѓL‚ЄЏг, Flexible cable is upper side.)
#display_rotate=2
#framebuffer_width=1200
#framebuffer_height=1920

# Landscape-2 (ѓtѓЊѓL‚ЄЌ¶, Flexible cable is left side.)
#display_rotate=3
#framebuffer_width=1920
#framebuffer_height=1200

# €И‰є‚НѓIѓЉѓWѓiѓ‹config.txt (RASPBIAN JESSIE, November 2015) ‚М“а—e
# Original contents of config.txt (RASPBIAN JESSIE, November 2015) is as follows.

# For more options and information see
# http://www.raspberrypi.org/documentatio … fig-txt.md
# Some settings may impact device functionality. See link above for details

# uncomment if you get no picture on HDMI for a default "safe" mode
# hdmi_safe=1

# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
#disable_overscan=1

# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

# uncomment to force a console size. By default it will be display's size minus
# overscan.
#framebuffer_width=1280
#framebuffer_height=720

# uncomment if hdmi display is not detected and composite is being output
#hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group=1
#hdmi_mode=1

# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2

# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4

# uncomment for composite PAL
#sdtv_mode=2

#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800

# Uncomment some or all of these to enable the optional hardware interfaces
#dtparam=i2c_arm=on
#dtparam=i2s=on
#dtparam=spi=on

# Uncomment this to enable the lirc-rpi module
#dtoverlay=lirc-rpi

# Additional overlays and parameters are documented /boot/overlays/README

# Enable audio (loads snd_bcm2835)
dtparam=audio=off

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#14 2020-11-10 09:30:31

Shahin
Administrator
Registered: 2016-02-17
Posts: 3,536

Re: mono lcd

scud,

Values does not make sense, check out with the manufacturer of the LCD.

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