scholliyt / led-matrix-16x16

RGB LED Matrix 16x16

LED-Matrix-16x16

A 16x16 RGB LED Matrix controlled by DMX over wifi

Some facts:

• 256 RGB LEDs
• 768 DMX Channels
• Teensy 3.6 as Main Controller
• ESP8266 as ArtNet Node
• 3 TLC5940s for controlling brightness
• 2 74CH595 Shift Registers for multiplexing

History

So, this is the second LED Matrix we are building. The first one was a bit smaller (10x10) and used shift registers only for controlling the LEDs. We weren't that happy about the limitation we got using shift registers only. We ran into refresh rate problems while trying to increase possible grayscale values. We ended up with 8bit grayscale (0-255).

The plan

So the basic data flow should look like this

Schematic

How multiplexing works

This are some images explaining how multiplexing with a LED Matrix works

The images are from this instrucable. There you can also find more information on multiplexing:

The building process

So after some weekends of soldering 4 wires to every single SMD LED we finally made it.

Lets start soldering them on the frame...

After dozen weekends spend soldering we made it

First testing

As you can see. It works! :) But there are some LEDs that need to be fixed

DMX

Using ArtNet Node running on an ESP8266. See this awesome project.

led-matrix-16x16's Issues

High side transistor type?

I'm looking to build a comparable Matrix.
I have a single color and an STP16CPS05 as a sink driver, I'm looking to switch about 30mA per LED with a total of 480mA per transistor. What kind of transistor did you use in your design? The transistors aren't marked on your schematic :/

Thank you

Need some translations help for readme

Somone to fix readme

animations of rain,snow,wind

Using openweathermap.com API which takes weather data from the API and send to controller by the controller we are using 16*16 ws2812b RGB matrix using animations of weather in the matrix but I am unable to get the animations

LED Common Type?

Really just a question... I wanted to confirm, are the LEDs you used Common anode? I believe that's what you need for the TLC5940 but wasn't sure if that swapped when using the shift registers to multiplex it all?