Luma.LED_Matrix: Display drivers for MAX7219

• Introduction
• Installation
  • Pre-requisites
  • GPIO pin-outs
  • Installing from PyPi
  • Examples
• Python Usage
  • 8x8 LED Matrices
  • 7-Segment LED Displays
  • WS2812 NeoPixels
  • Next-generation APA102 NeoPixels
  • Emulators
• API Documentation
  • Breaking changes
  • luma.led_matrix.device
  • luma.led_matrix.virtual
• Notes
  • Cascading, power supply & level shifting
• References

Contributing

Pull requests (code changes / documentation / typos / feature requests / setup) are gladly accepted. If you are intending some large-scale changes, please get in touch first to make sure we’re on the same page: try and include a docstring for any new methods, and try and keep method bodies small, readable and PEP8-compliant.

GitHub

The source code is available to clone at: http://github.com/rm-hull/luma.led_matrix

Contributors

• Thijs Triemstra (@thijstriemstra)
• Jon Carlos (@webmonger)
• Unattributed (@wkapga)
• Taras (@tarasius)
• Brice Parent (@agripo)
• Thomas De Keulenaer (@twdkeule)
• Tero Korpela (@terokorp)

ChangeLog

Version	Description	Date
Upcoming	Alternative WS2812 low level implementation Add support for @msurguy’s modular NeoSegments
0.10.1	Add block_orientation=180 option	2017/05/01
0.10.0	BREAKING CHANGE: Move sevensegment class to luma.core.virtual package	2017/04/22
0.9.0	Add support for APA102 RGB neopixels	2017/03/30
0.8.0	Change MAX7219’s block_orientation to support ±90° angle correction Deprecate “vertical” and “horizontal” block_orientation	2017/03/19
0.7.0	BREAKING CHANGE: Move sevensegment class to luma.led_matrix.virtual package Documentation updates & corrections	2017/03/04
0.6.2	Allow MAX7219 and NeoPixel driver constructors to accept any args	2017/03/02
0.6.1	Restrict exported Python symbols from luma.led_matrix.device	2017/03/02
0.6.0	Add support for arbitrary MxN matrices rather than a single chain	2017/02/22
0.5.3	Huge performance improvements for cascaded MAX7219 devices Documentation updates	2017/02/21
0.5.2	Add apostrophe representation to seven-segment display Deprecate luma.led_matrix.legacy (moved to luma.core.legacy)	2017/02/19
0.4.4	Support both common-row anode and common-row cathode LED matrices	2017/02/02
0.4.3	Add translation mapping to accomodate Pimoroni’s 8x8 Unicorn HAT MAX7219 optimizations	2017/01/29
0.4.2	Fix bug in neopixel initialization Improved demo scripts Additional tests	2017/01/27
0.4.0	Add support for WS2812 NeoPixel strips/arrays	2017/01/23
0.3.3	Fix for dot muncher: not handling full-stop at line end Documentation updates	2017/01/21
0.3.2	Replace bytearray with mutable_string implementation More tests	2017/01/20
0.3.1	Python 3 compatibility (fix exception in bytearray creation) Begin to add tests & test infrastructure	2017/01/20
0.3.0	BREAKING CHANGE: Package rename to luma.led_matrix	2017/01/19
0.2.3	Bit-bang version using wiringPi	2013/01/28

The MIT License (MIT)

Copyright (c) 2017 Richard Hull & Contributors

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.