Introduction
------------
Python library interfacing LED matrix displays with the MAX7219 driver (using
SPI) and WS2812 & APA102 NeoPixels (inc Pimoroni Unicorn pHat/Hat and Unicorn
Hat HD) on the Raspberry Pi and other Linux-based single board computers - it
provides a Pillow-compatible drawing canvas, and other functionality to
support:

* multiple cascaded devices
* LED matrix, seven-segment and NeoPixel variants
* scrolling/panning capability,
* terminal-style printing,
* state management,
* dithering to monochrome,
* Python 3.6+ is supported

.. image:: .com/rm-hull/luma.led_matrix/master/doc/images/devices.jpg
   :alt: max7219 matrix

A LED matrix can be acquired for a few pounds from outlets like `Banggood
<http://www.banggood.com/MAX7219-Dot-Matrix-Module-DIY-Kit-SCM-Control-Module-For-Arduino-p-72178.html?currency=GBP>`_.
Likewise 7-segment displays are available from `Ali-Express
<http://www.aliexpress.com/item/MAX7219-Red-Module-8-Digit-7-Segment-Digital-LED-Display-Tube-For-Arduino-MCU/1449630475.html>`_
or `Ebay <http://www.ebay.com/itm/-/172317726225>`_.

.. seealso::
   Further technical information for the specific devices can be found in the
   datasheets below:
   
   - :download:`MAX7219 <tech-spec/MAX7219.pdf>`
   - :download:`WS2812 <tech-spec/WS2812.pdf>`
   - :download:`WS2812B <tech-spec/WS2812B.pdf>`
   - :download:`APA102 <tech-spec/APA102.pdf>`
