goled

Raspberry Pi LED Matrix Controller

Controls one of these https://www.adafruit.com/product/420 with one of these https://www.raspberrypi.org/products/raspberry-pi-3-model-b-plus/ using a web application written in Go.

This project has a dependency on the C library from https://github.com/hzeller/rpi-rgb-led-matrix

As well as the Go binding to that C library here: https://github.com/mcuadros/go-rpi-rgb-led-matrix

I recommend following hzeller's fantastic instructions, then those of mcuadros. Once those are satisfied, this code should compile on the Pi properly.

Sanity warning

If using the Adafruit HAT or Bonnet, make sure to use HardwareConfiguration adafruit-hat or adafruit-hat-pwm as appropriate. If you use regular as found in many examples, you'll get no visual feedback, and no errors.

Goals

• Create friendly web-based prototyping tool for testing designs
  • Simple Web UI to assign colors to individual LEDs by clicking-to-paint on table cells
  • "Drawing" mode to allow assignment of colors to LEDs by simply hovering over the table cells
  • Synchronization between browsers of canvas state
  • Optimized fast polling of canvas state
  • Color selector using http://bgrins.github.io/spectrum/ (no more manual RGBA value inputs)
  • Clear canvas button
  • Upgrade to websocket
  • Write text with font selection
  • Create scrolling images and text
• Create frame capture and re-play logic to enable animation creation
  • Save canvas
  • Recall canvas
  • Create animation (slice of canvas frames)
  • Save animation frame
  • Recall animation frame
  • Play animation button
  • Rearrange animation frames with drag-n-drop
  • Delete animation frames using checkbox selection
  • Per-animation frame rate selector
  • Animation elements like sleep and loop?
  • Programmatic animation? (Define pixel regions, loops, sleep, etc programmatically)
  • Upgrade to HTML5 Canvas
  • Support copy-paste of pixel regions
  • Optimize updates to animations to update only the modified animations
• Create API-hooking code to allow piping in data from outside sources

Stretch Goals

• Create sign orchestration system to control many signs from a Single Pane of Glass