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Pluto
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Joined: 09/06/2017
Location: Finland
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Posted: 08:36am 03 Nov 2023

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Plasma,
I have also recycled 2 old Laptop displays by using similar AliExpress LCD adapters/drivers.
https://www.thebackshed.com/forum/ViewTopic.php?TID=14650&PID=183631#183631#183631
One of the displays has been powered continously for about 1.5 years. Most of the time in stand-by mode. Not seen any problems sofar.
12V power to the LCD adapter and 5V out that directly powers the PicoMiteVGA.
The adapters were supplied with small remote controls. When the display is swithed on, the Pico starts with the same keypress.

JohnS
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Joined: 18/11/2011
Location: United Kingdom
Posts: 3802

Posted: 09:32am 03 Nov 2023

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Mixtel90 said From the comments buyers aren't seeing a USB device when they take power from USB. Whether it needs a special driver (not supplied and no link to one) who knows?

It doesn't appear as any kind of USB for me.

Using USB-A from laptop to USB-C on LCD, with Linux it doesn't enumerate or anything as regards USB.

So... no touch I reckon.

OTOH it's probably in effect a USB-C charging-only cable (sorry, USB-C has my brain somewhat fried).

John
Edited 2023-11-03 19:34 by JohnS

JohnS
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Posted: 09:38am 03 Nov 2023

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Pluto said Plasma,
I have also recycled 2 old Laptop displays by using similar AliExpress LCD adapters/drivers.
https://www.thebackshed.com/forum/ViewTopic.php?TID=14650&PID=183631#183631#183631

Please say what board to look for on aliexpress.

(I have old laptops / they're v cheap.)

LVDS or some such? But what else...

John
Edited 2023-11-03 19:38 by JohnS

Pluto
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Joined: 09/06/2017
Location: Finland
Posts: 358

Posted: 10:12am 03 Nov 2023

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John,
VGA #1
VGA #2

These are the board I have used. They were both for old LCDs with high voltage neon backlight.
The first step is to open the laptop display and find the type number of the display.
Then you can try to find a supporting board on AE. Message with the potential seller and ask for their suggestions. At least from one of the sellers I got 3 different proposals for that particular LCD. Believe I took the cheapest.

Fred

Plasmamac

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Joined: 31/01/2019
Location: Germany
Posts: 554

Posted: 04:23pm 03 Nov 2023

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@pluto and other
Aliexpress links will not work in all country , so please post a screenshot also .this will help us for searching in Ali.
Thx

Plasma

Pluto
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Joined: 09/06/2017
Location: Finland
Posts: 358

Posted: 05:26pm 04 Nov 2023

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Plasma, screenshots enclosed.

Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 6795

Posted: 05:50pm 04 Nov 2023

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Hmmm...
If you only need a small display it's cheaper to buy one than to recycle a laptop display by the looks of things.

Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs

stanleyella

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Joined: 25/06/2022
Location: United Kingdom
Posts: 2129

Posted: 06:32pm 04 Nov 2023

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I found if you can't remember your aliexpress pass word your .. going to waste a lot of time to try to spend your money.I use ebay, it works but costs more for same item but quicker delivery.

JohnS
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Joined: 18/11/2011
Location: United Kingdom
Posts: 3802

Posted: 08:25pm 05 Nov 2023

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Pluto - thanks.

John

Pluto
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Joined: 09/06/2017
Location: Finland
Posts: 358

Posted: 09:31am 06 Nov 2023

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BTW the more expensive one also has a TV-tuner. https://www.thebackshed.com/forum/ViewTopic.php?FID=16&TID=16364&LastEntry=Y#211951#211815

Fred /Pluto

JohnS
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Joined: 18/11/2011
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Posted: 09:58am 06 Nov 2023

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Pluto said BTW the more expensive one also has a TV-tuner. https://www.thebackshed.com/forum/ViewTopic.php?FID=16&TID=16364&LastEntry=Y#211951#211815

Fred /Pluto

Interesting... what is the interface (*) for that if you know?

(*) other than the TV aerial / cable :)

John

Pluto
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Joined: 09/06/2017
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Posts: 358

Posted: 11:56am 06 Nov 2023

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John said Interesting... what is the interface (*) for that if you know?

(*) other than the TV aerial / cable :)

LCD Controller Board:

HDMI VGA AV USB ATV DTV LCD Board Work for LVDS Interface LCD Screen
Input Power Adapter:12Vdc More than 2A.
Come In Standby Model When Not Input Signal
Standby Model <1W
HDMI Port Support Transform Audio Compatible With HDMI 1.3/1.4，HDCP 1.2
USB Support Video
AV Compatible With PAL And NTSC
Video Input: HDMI VGA AV USB ATV DTV
ATV: 48.25MHZ-863.25MHZ PAL/ SECAM
DTV: VHF (50MHz ~ 230MHz) UHF (474MHz ~ 862MHz) DVB-T DVB-T2 DVB-C
Audio Input: HDMI PC-Audio
Audio Output: Speaker Connector
OSD: Brightness Contrast Auto Language And So On
Language:English French German Spanish Italian And So On
Board Size:183mm x 43mm x 17mm

For PicoMiteVGA: 12V in to the LCD controller board and 5V out to Pico. VGA out from Pico and into the bord's VGA.

Main use: PicoFrog and Tiles machine for the grandchildren (5a and 7a).

Fred

JohnS
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Joined: 18/11/2011
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Posted: 05:57pm 06 Nov 2023

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So does the TV go through a tuner (or some chips) and turn into USB or what?

(I guess some software has to select the frequency of interest.)

John

Pluto
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Joined: 09/06/2017
Location: Finland
Posts: 358

Posted: 07:18pm 06 Nov 2023

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I have no idea about what comes out via USB, except for +5V. (Neither any idea about what can be input to the USB.

The TV tuner works as a standard TV with the remote control included in the LCD adapter package. Searching and storing channels by the remote control.
I did only try the TV a couple of times about 2 years ago, but it was a fully functional TV.

Fred

stanleyella

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Joined: 25/06/2022
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Posts: 2129

Posted: 07:38pm 06 Nov 2023

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Is it freeview? Amazing what you can buy.

phil99

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Joined: 11/02/2018
Location: Australia
Posts: 2135

Posted: 09:10pm 06 Nov 2023

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The USB socket is usually for a USB drive / stick.
The most basic ones only support firmware update.
Others can play various media files and some can also record DTV.
Using the remote to search the Menu pages will reveal its capabilities.

Play and record options might only be shown when a USB stick is inserted.
Edited 2023-11-07 07:15 by phil99

Plasmamac

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Joined: 31/01/2019
Location: Germany
Posts: 554

Posted: 01:13am 07 Nov 2023

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Thx for the pics

Plasma

Volhout
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Joined: 05/03/2018
Location: Netherlands
Posts: 4238

Posted: 09:53am 10 Dec 2023

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I have been using the display in the first post, and it is amazingly sharp and bright on the PicoMiteVGA. Good picture, good colors, viewing angle is great.

I power it from one USB port of the laptop with the included cable.
The other USB port is for the PicoMite
Third for the mouse (not a touchpad guy).

Good investment. I can write code on the kitchen table without the larger 19" screen.

Volhout

PicomiteVGA PETSCII ROBOTS

stanleyella

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Joined: 25/06/2022
Location: United Kingdom
Posts: 2129

Posted: 07:58pm 18 Dec 2023

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This arrived and vga pico is fine for 7". No sound but shows avi socket but none so hdmi no sound either.. do I moan or it's useful?
edit.. it's great. mode 0 320x240 fine. could replace my monitor. just need a small ps2 keyboard.

not what it said,no av just composite phono.no hdmi sound.. no sound... but nice picture.

Edited 2023-12-19 06:42 by stanleyella

Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 6795

Posted: 08:17pm 18 Dec 2023

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Monitor sound is often rubbish anyway. I never use it on mine and the speakers are much bigger than they'd be in that monitor. It's up to you :)

Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs

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