ESP32-HUB75-MatrixPanel-DMA
stm32-usart-uart-dma-rx-tx
ESP32-HUB75-MatrixPanel-DMA | stm32-usart-uart-dma-rx-tx | |
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13 | 4 | |
831 | 1,163 | |
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7.8 | 4.8 | |
10 days ago | 2 months ago | |
C++ | C | |
MIT License | 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
stm32-usart-uart-dma-rx-tx
- 📟Using DMA for transmitting data through USART in circular mode (Baremetal Embedded C)
- Architecture for efficient UART communication
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How to implement bare metal C program to interface with multiple serial devices with minimal packet loss?
I suggest considering DMA as well. You can check this application note on using UART transfers (TX/RX) with DMA and interrupts.
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STM32 Documentation Rant/Please help me I'm tired and I just want UART to work...
Majerle has a GitHub repo which you may find useful https://github.com/MaJerle/stm32-usart-uart-dma-rx-tx
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
Modbus-STM32-HAL-FreeRTOS - Modbus TCP and RTU, Master and Slave for STM32 using Cube HAL and FreeRTOS
ESP32-HUB75-MatrixPanel-I2S-D
OTA_update_STM32_using_ESP32 - Program STM32Fxx MCUs Over-the-Air using ESP32
dmdclock
LovyanGFX - SPI LCD graphics library for ESP32 (ESP-IDF/ArduinoESP32) / ESP8266 (ArduinoESP8266) / SAMD51(Seeed ArduinoSAMD51)
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
stm32mp1-baremetal - Baremetal framework and example projects for the STM32MP15x Cortex-A7 based MPU
MatrixFireFast - A fire simulation for LED matrix displays on Arduino/ESP8266/ESP32 using the FastLED library.
stm32-ws2812b - STM32 Library for WS2812B using DMA+PWM
firmware
USBMidiKliK4x4 - UMK4x4 - 4-16 in/out and 3-15 IN/3OUT USB MIDI interface for STM32F103 series board