LVDS 320x240 LCD signal to VGA or HDMI output? Possible?

Projects General Guidance
1

I have an electronic device with a 320x240 LCD.

I'd like to mirror what I see on the small LCD on to a monitor. VGA or else HDMI. I realize that it'll still be 320x240 resolution, just on a larger screen.

I'm hoping I can buy an adapter and make this work with some soldering and wiring.

The pinout diagram going to the LCD looks like this:

1 FLM First Line Mark / Shift Direction Select
2 M Alternation Control Signal
3 CL1 LP, data latch (row) / Display Data I/P Clock
4 CL1 CP, data shift (column) / Display Data I/P Clock
5 DISPOFF Controls Display off, 0: off, 1: on
6 D0 Data Pin
7 D1 Data Pin
8 D2 Data Pin
9 D3 Data Pin
10 VDD+5V Power Supply 5volts
11 VSS-GRD Ground
12 VLC-24V
13 VO Contrast Adjustment, usually uses POT that can source 0-5V
14 FGND

I'd like to split out these pins to feed both the LCD and an optional monitor so I don't have to squint over the device and look at the small LCD to see what I am doing all the time.

Any ideas on how I could accomplish this? Thanks!

2

No. Forget it. Not going to happen for under $10,000.

3

LOL Come on man.

There's lots of options to convert VGA or HDMI to LVDS. But not vice versa. I need to convert the signal the opposite way. monochrome. Only 4 bits. It shouldn't be too difficult.

I was thinking something like this, but it doesn't have a pinout diagram to help me: https://www.mouser.com/datasheet/2/763/LVDS-DVI_20131105-844208.pdf

And I don't quite understand the difference between 18 bit LVDS versus what is only 4bit LVDS in my case.

This thread has been the most helpful on this forum so far: Interfacing a 320x240 monochrome LCD display - Displays - Arduino Forum

This might help me get to the right solution too: Gammon Forum : Electronics : Microprocessors : Arduino Uno output to VGA monitor

Something similar here too: VGA library for Arduino UNO and ATMega328 - Displays - Arduino Forum

Whether you guys help me or just have jokes, I'll work toward a solution.

4

Hmmm. Here's the first problem: :roll_eyes:

Sense-A:
I have an electronic device with a 320x240 LCD.

Do you have the complete schematic and source code for this device?

5

I was not joking at all. Unless you are a really experienced and knowledgeable engineer armed with complete documentation on the device and all the interface protocols, you haven't even a slim chance.