RGB Full-Color LED Matrix Panel for Raspberry Pi and Ardui, 3mm Pitch, 64×64, 4096 Individual RGB LEDs, Brightness Adjustable

The LED matrix works as expected. I'm coupling it with an ESP32 microcontroller, and it's fairly easy to make it work with the ESP32-HUB75-MatrixPanel-DMA library.One thing to notice is that it requires 14 GPIOs to control, in addition to 5V and GND. My older microcontroller (TTGO T-Display), although being an ESP32, did not have enough GPIOs available - notice that the pins 36-39 are input only. I had to get some new boards to make it work.It's very bright; in the indoor condition I'm working with, I only need to dial the brightness up to ~30 for it to work, out of 255.One downside is that, the power cable it provided does not work well with the power adapter it provided: the power cable ends with some fork-like Y plugs, while the power adapter accepts stripped cables. Although you can screw one leg of the Y plug into the adapter, I am a bit concerned as there's a lot of metal still exposed.

With a little patience I was able to connect up the entire bus to the screen with the GPIO of a raspberry pi4. The instructions were a little difficult but once read a bit and found the rpi4 docs all was clear. This is not for someone wanting to "plug and play" so be warned that wiring directions and programming skills in either C++ or Python are required.The included instructions do include links to where to get related docs on github. The examples compiled, with make, right away as well which is super nice not to need to debug anything. The included demos work great with all the options needed to run just about any screen. The example and included code really help learn the control interface quickly so that custom coding can be easily done.The only instruction that was not clear was strobe and latch pins in the diagrams, they are the same thing and I knew enough to understand that. Without this pin in the right spot the screen won't lock in an image correctly. Pay attention to the connection and use ALL of the wires, careful not to get the [2] bus mixed with the [1] bus in the diagrams.In terms of power at max brightness with a white screen (RGB is full on) I was able to draw 2.66A on my bench supply which is below the 4A spec. None the less a 4A 5V supply is required, I tested the min voltage at 4.2V but that comes at some instability to be able to latch correctly on partial text.The screen kit included everything needed to get connected including a daisy chain for another screen. The magnetic pegs and straight pins for desk positioning was really beneficial.**Note: My pictures have a little stray pixel here and there on the actual screen. This is due to using software based latching and not allowing/configuring the rpi4. The examples give warnings and how to configure or work around the problem.

As a hobbyist interested in Arduino, Raspberry Pi and so on this was my first experiment into RGB boards. It includes the main board and several cables including one that can serve as either input or output. I wish that the wiring would had been labels or that their site indicated pin correlation more explicitly, as it took a bit of self documentation to figure out the mappings. The included cable has male ends so will not go into an ordinary Maxduino with headers already attached, without additional male-female type connectors. I will continue experimenting with this when I have better connectors. The website mentioned includes sample projects for various microcontrollers.

This is a huge LED matrix display of the kind often seen in sports stadiums and other public venues as a large format display. You get a single borderless 'tile', which can be daisy chained with other tiles to create any display size you need. The tiles connect together with a relatively standard connector called HUB75E (the 'E' being an extra pin that needs to be connected because this panel goes up to 64x64 resolution); you can either control this from your favorite microcontroller or source a backpack from a variety of sources that builds the control logic right in and plugs directly into the HUB75E port.The biggest thing you need to keep in mind when working with this display is its power consumption requirements. This is a lot of brightness and the specs indicate you need 5V/4A, which is an awful lot of low voltage power; you'll need a specialty power supply, as well as very beefy wire to transport it if the power supply is any distance away, as 5V is not a great voltage for long distance power transmission.If you're planning on daisy-chaining multiple modules, you really need to think very carefully about how to get power to and through your system - the solution may involve multiple power supplies, bus bars, or other complex distribution methods. With a single module, you should be able to just buy a single fancy 5V/4A supply and call it good, though. For more info on this topic, search rpi-rgb-led-matrix on Github and read wiring.md.I found the packaging and product to be as descibed and thought the documentation for this module was sufficient on the Waveshare page (although other resources definitely help further if you search for HUB75E and your preferred controller). I'm excited about the possibilities for this 4096 LED display!