How to build a 700 LEDs Matrix Display - and scroll Text on it
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- Опубликовано: 7 сен 2024
- core.Weaver here.
I'm starting a new series. This project's goal is to design and build a Matrix LED Display which we're gonna use to put some scrolling text on.
In this first Part, I'm explaining the idea behind, I'll show you the schematic and the boards I designed and then we're gonna go ahead and work from there.
The Design is modular, meaning, I only used 10 panels (700 LEDs) as a proof of concept, but in theory it should work with 10 times as many panels (100 modules - 7000 LEDs :)
So if you have the time and patience... go ahead .. make me proud !
The software is still in development at this moment and there are literally lots of things which can be done here (special text moving routines, other scrolling effects, etc).
Stay tuned for - Part 2 - !!
I'm gonna build a controller for this display, build a power supply and finish the case design.
= The MUSIC =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
The 2 tracks I used for the score of this video:
"Northern lights" by Stellardrone
Licensed under Creative Commons License (CC BY 3.0)
stellardrone.b...
"Windlands" by arwelone
Author's written permission (Very special thanks !)
/ windlands
My thanks to both of them for creating such masterpieces.
Please support them in any way you can !
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Thanks for watching !
core.Weaver
You have a special of of explaining stuff.. It calms me down and honestly, I really do think even my granma would understand the principle behind this project. Thanks a million and please keep'em coming !
@ mike jones
" I just started with electronics and i appreciate you making this easy to understand, i just got an arduino and after doing the simple blking LED's tutorial i was dreaming about doing something like this and its so cool that someones done it and willing to share. Thank you. Im just having trouble understanding how you can control so many LED's with so little I/O pins. I was under the impression youd need 1 I/O pin for each LED? "
It's called multiplexing. Basically I'm scrolling though each row (or line if you want), turn on or off the desired LEDs on that row, and then move to the next row. If you do this fast enough the human eye will be tricked to see a continuous sequence.
The project (both hardware and software) is open source and it's hosted here:
github.com/coreWeaver/LED-Panels
The bill of materials can be easily extracted from the schematic. All parts are none critical. Make sure to use the same type of LEDs for all the panels.
This is so well explained. I've seen similar projects but nothing compares to this. Can you post a pdf of the schematic ? I'd like to build this too. Maybe make it a little longer. Thanks
Thanks for making this open source. I already ordered 2000 LEDS and I'll try to build 20 modules. What's the name of those side connectors you used ?
try looking for: 2x5 Pin, 90 degrees angle, 2.54mm, male and female connectors. You can also use 2x40 pins or longer ones. They're cheaper, if you're ok with cutting them and then doing a little bit of sanding on the edges. Good luck ! And tell me how it went.