DESCRIPTION
What’s better than a single LED? Lots of LEDs! These 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 colour (the images are photographed at the dimmest setting to avoid overloading the 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 8x8s or eight 7-segments (or a combination, such as four mini 8×8 and four 7-segments, etc) on a single I2C bus.
This kit comes with:
- A fully tested and assembled LED backpack
- Ultra-bright 4-digit 0.56″ tall colour seven-segment display
- 4-pin header
To get you going fast, they have revised this popular board to be the same size and pinout as before but now with two STEMMA QT connectors on either side that are compatible with the SparkFun Qwiic I2C connectors. This allows you to make solderless connections between your development board and the HT16K33 or to chain it with a wide range of other sensors and accessories using a compatible cable.
A bit of soldering is required to attach the matrix to the backpack but it’s very easy to do and only takes about 5 minutes.
Of course, in classic Adafruit fashion, they have a tutorial showing you how to set up, wire and control the display. They have written a 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, this is the solution you’ve been looking for!
FEATURES
This board/chip uses an I2C 7-bit address between 0x70-0x77, selectable with jumpers
- Backpack Dimensions: 50.0mm x 26.7mm x 6.0mm / 2.0″ x 1.1″ x 0.2″
- Backpack Weight: 5.6g
- 7-Segment Display Dimensions: 19mm x 50mm x 14mm / 0.75″ x 2″ x 0.56″
- 7-Segment Display Weight: 8.4g
RESOURCES
- Datasheets, schematics, EagleCAD PCB files, and Fritzing
| Color | Red, Yellow, Green, Blue, White |
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