ESP32-HUB75-MatrixPanel-DMA
SmartMatrix
ESP32-HUB75-MatrixPanel-DMA | SmartMatrix | |
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13 | 8 | |
831 | 595 | |
- | 0.3% | |
7.8 | 1.9 | |
10 days ago | 4 months ago | |
C++ | C++ | |
MIT License | - |
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ESP32-HUB75-MatrixPanel-DMA
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Diffuser for pixel matrix
I whipped up a quick ESPHome wrapper (as a custom component) for this library: https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-DMA
- What would I need to make this with arduino?
- Cloud Based LED Matrix (HUB75) Display Controllers
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Taking over a Dead IoT Company
The ESP32 can handle a 64x64 HUB75 display pretty handily. Several of them, even. There’s a solid library out there [0] that just pumps pixels right from memory via the ESP32’s built-in DMA engine. Adafruit_GFX is the supported library for drawing primitives/text/bitmaps/etc., so you can re-use a lot of code that’s out there.
But let’s start with a simple, quick hit of dopamine: There’s a web-based installer [1] (it uses web serial, so Chrome is required) for a couple varieties of clock designed for a 64x64 HUB75 panel and an ESP32. $20 in parts from AliExpress if you already have a suitable 5V power supply.
To use that site, all you need is that aforementioned 5V power supply—4A or more recommended, 10A if you’re planning to drive a full panel of pixels on an outdoor panel at full brightness—a 64x64 HUB75 matrix panel, and an ESP32. Everything except power is run directly to the ESP32. Many panels even come with a 16-pin female IDC connector for the panel, with individual DuPont-style female connectors at the other end that you can just slip over the pins on the ESP32.
The source code for each clock (repo is linked from the web page) is a great starting point for making your own versions.
The panels, as others have mentioned, are shockingly cheap from the usual sources like eBay [2] or AliExpress (search for “HUB75 panel” or “p3 64x64”), but even those in a hurry can get a 64x64 panel for under $40 from Amazon [3].
[0]: https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-DMA
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Just finished this rebuild from original to ESP32
I'm about to share the whole project documentation in german. I used ESP32-HUB75-MatrixPanel-DMA with additional 74HC245 to shift the levels up from 3.3 to 5v (as there is a 2m flat cable running through the frame to the display). The Library is based of Adafruit GFX, for which you can find plenty of examples. If you don't want blanking, use two buffers or partially repaint (for the text and image animation I added black filled boxes on each redraw before painting the new position/text). The ESP32 has just enough pins to power the basic functions, but I'm about to order a new PCB with a portexpander, which frees some pins and allows for blinking buttons. Will add a DFPlayer Mini as well, as soon my customer decided, which MP3 files he wants.
- Tidbyt hardware display device: a review
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how do i connect this panel to my esp32/breadboard? cant find any videos online i want to run a pxmatrix library
will this work? , also im very new to this space but very willing to learn . so far all i have is the freenove starterkit that came with an esp32 because the first one i got from aliexpress wasn't showing up in arduino IDE, but i have a feeling it just wasn't configured properly.
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Read gif from sd card, display on Wa2812B matrix. Difficult to find examples.
Here's some sample code that does exactly that this is a "HUB75" board, but it looks like a HUB75 is just an ESP32 with an LED matrix attached. The code should work fine for you so long as you change the number of LEDs, and the pin out.
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animated gifs in circuitpython
unless someone can help me fix the Arduino Code...
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Working on a DMD that displays GIFS, what do you think?
See: https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-I2S-DMA#panels-supported
SmartMatrix
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Is there an alternative to using two WS2811 ics to control RGBW channels [first image], and are there any adjustments needed for the current regulator circuit [second image] ?
SmartMatrix panels - needs the SmartMatrix library (https://github.com/pixelmatix/SmartMatrix)
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Need help with using Teensy 4.0 for 8x32 WS2812B LED Matrix
SmartMatrix has a shield you can use. Just plug the teensy into it, no need for a bunch of wires. They also have a library you can use for coding. This is the route I went.
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12 animation layers, temporal dithering, still 240 fps @1024 LEDs. But I'm close to the thermal limit of a stock Teensy 4. Time to introduce active cooling I guess. Please ignore the interference stripes, only the camera sees it.
That's why I use APA102 LEDs driven at 12 MHz (my 16x16 panel) and in this video here I use a HUB75 panel (multiplexed LEDs) driven by the excellent SmartMatrix library from Louis (Pixelmatix). https://github.com/pixelmatix/SmartMatrix
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Can I drive a HUB75 panel directly with a Teensy 4 without using a levelshifter? The SmartMartix community seems a bit inactive - that's why I'm asking here.
Seems to be this one here: https://github.com/pixelmatix/SmartMatrix/blob/master/extras/hardware/Teensy4/SmartLEDShield_Teensy4_V5_sch.pdf
- SmartMatrix Teensy4.1/SmartMatrixShield beginner question(s)...
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how do i connect this panel to my esp32/breadboard? cant find any videos online i want to run a pxmatrix library
check out https://github.com/pixelmatix/SmartMatrix and https://community.pixelmatix.com/
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Open Source Ticker Tape
This is really neat. If you were interested in doing it in future with dotmatrix panels, take a look at HUB75 addressable panels. Not crazy expensive on Aliexpress and friends.
https://github.com/pixelmatix/SmartMatrix has more details on hardware/software required.
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LED PANEL : flexible module, 256x128mm resolution, 64x32 dots, HD SMD2121, P4
That's a HUB75 panel. FastLED can't drive those. You'll need a library like SmartMatrix and the associated hardware.
What are some alternatives?
ESP_Python_Serial - A tutorial on how to make an ESP and a Python script (running on PC or a RPi) communicate via Serial and do useful stuff while communicating
stm32-usart-uart-dma-rx-tx - STM32 examples for USART using DMA for efficient RX and TX transmission
ESP32-HUB75-MatrixPanel-I2S-D
dmdclock
NeoGB-Printer - An open-source and standalone Gameboy Printer emulator 100% compatible with all officially released games (110 in total) that support the accessory. Just print and save the images as BMP
MatrixFireFast - A fire simulation for LED matrix displays on Arduino/ESP8266/ESP32 using the FastLED library.
firmware
ESP32-A2DP - A Simple ESP32 Bluetooth A2DP Library (to implement a Music Receiver or Sender) that supports Arduino, PlatformIO and Espressif IDF
esp-pixel-matrix - Control a 32x64 pixel matrix via websockets
vbz-fahrgastinformation
clack - Controller and web server for KRUSH Flip Clock