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Chicago Electronic Distributors has become part of the PiShop family. Please place orders through PiShop.us, as we are no longer taking orders through this site. More details are in our blog!
Chicago Electronic Distributors has become part of the PiShop family. Please place orders through PiShop.us, as we are no longer taking orders through this site. More details are in our blog!

Wouldn't it be awesome if you could control a matrix without tons of wiring? That's where these adorable LED matrix backpacks come in. 


The matrices use a driver chip that does all the heavy lifting for you: They have a built in clock so they multiplex the display. They use constant-current drivers for ultra-bright, consistent color (the images above are photographed at the dimmest setting to avoid overloading our camera!), 1/16 step display dimming, all via a simple I2C interface. The backpacks come with address-selection jumpers so you can connect up to four mini 8x8's or eight 7-segments (or a combination, such as four mini 8x8's and four 7-segments, etc) on a single I2C bus.

The product kit comes with:

  • A fully tested and assembled LED backpack
  • Ultra-bright 8x8 red matrix
  • 4-pin header

A bit of soldering is required to attach the matrix onto the backpack but its very easy to do and only takes about 5 minutes.

Of course, in classic Adafruit fashion, we also have a detailed tutorial showing you how to solder, wire and control the display. We even wrote a very nice library for the backpacks so you can get running in under half an hour, displaying images on the matrix or numbers on the 7-segment. If you've been eyeing matrix displays but hesitated because of the complexity, his is the solution you've been looking for!

Technical Details

  • This board/chip uses I2C 7-bit address between 0x70-0x73, selectable with jumpers

Backpack Dimensions:

  • 20mm x 28mm x 4mm / 0.8" x 1.1" x 0.2"
  • Mounting Holes: 12mm x 22mm / 0.5" x 0.9"

Datasheets, schematic, EagleCAD PCB files, and Fritzing available in the product tutorial

    RoHS 2 2011 65 EU CompliantRoHS 2 2015 863 EU Compliant

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