Wouldn’t it be awesome if you could control a matrix without tons of wiring? That’s where these lovely LED matrix backpacks come in! They work perfectly with the matrices we stock from the Adafruit shop and make adding a bright little display trivial.
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. These 1.2″ matrix backpacks come with three address-selection jumpers so you can connect up to eight 1.2″ 8×8’s together (or a combination, such as four 1.2″ 8×8’s and four 7-segments, etc) on a single I2C bus.
The product kit comes with:
- A fully tested and assembled 1.2″ LED backpack
- Ultra-bright 1.2″ 8×8 matrix
- 4-pin header
A bit of soldering is required to attach the matrix onto the backpack, but it’s very easy to do and only takes about 5 minutes.
Of course, in classic Adafruit fashion, they also have a detailed tutorial showing you how to solder, wire and control the display. they 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 eying matrix displays but hesitated because of the complexity, this is the solution you’ve been looking for!
TECHNICAL DETAILS
This board/chip uses I2C 7-bit addresses between 0x70-0x77, selectable with jumpers.
Datasheets, Fritzing object, EagleCAD PCB files and more in the tutorial!
| Color | Red, Pure Green, Yellow Green |
|---|
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Note: Orders with more than one item will be assigned a separate processing time for each item.
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Returns
Stock is dynamic, and cannot be fully controlled by us because of the involvement of multiple parties including the factory and our warehouse. This means that the actual stock could alter at any time. It's possible that the stocks could be depleted after your order has been processed.
The policy is for 30 days. Unfortunately, if 30 days have passed from the date you purchased the item, we will not be able to provide a refund or exchange.
The item must not be in use and must be in the original packaging. You must have the item in the original packaging.
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