Large, simple display for Mega

Other Hardware Displays
1

Hi all,
I am looking for a relatively large display, around 50x30cm, to be controlled by a Mega.
LED matrix, LCD, anything will do, I need to display simple characters and not much more. B/W is fine too. Size and brightness are the only important factors for this project.
But I cannot find anything bigger than a 30x16cm, 64x32 dot matrix.
Any idea?
Thanks!

2

You could search for "dot matrix display" on AliExpress,
Dot Matrix Display - Tools - Aliexpress - The best dot matrix display

and combine e.g. 3 of https://www.aliexpress.com/item/32810789401.html

This is the cheapest solution, I think.

1 Like
3

For easy solution, you can chain six 8x32 ws2812 led matrix panels together just like led strips..
https://www.aliexpress.us/item/3256807032434058.html

1 Like
4

Thanks!
Out of complete ignorance, how do you control something like this with the Arduino? I2C?

5

the MAX7219 is more or less SPI. You will find libraries for that, start with MD_MAX72XX .

6

HDMI display running on a Raspberry Pi Zero. Connect the Pi to the Mega over a serial port and send your data that way.

That's probably the easiest, and also least expensive way to do it.

7

With

around 50x30cm

?

Are there any inexpensive 24" HDMI displays? (~60cm / 2.56)

8

Nice idea. I guess you could skip Mega as well if resources of Pi Zero are sufficient for rest of the setup?
But 6x ws2812 panels make $30...

9

I've seen some on Aliexpress but the aspect ratio is kind of weird.

10

Hi all,
Thanks a lot for the feedback.
I'll give a shot to the 6x 8x32 ws2812, hopefully the Mega will manage. Otherwise I'll have to go with the Esp32 but my C is inexistent, so it will be steeper...

11

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