Adafruit 0.56 4-Digit 7-Segment Display w/I2C Backpack - Red

What39s better than a single LED? Lots of LEDs! A fun way to make a small display is to use an 8x8 matrix or a 4-digit 7-segment display. Matrices like these are 39multiplexed39 - so to control all the seven-segment LEDs you need 14 pins. That39s a lot of pins, and there are driver chips like the MAX7219 that can control a matrix for you but there3...

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What39s better than a single LED? Lots of LEDs! A fun way to make a small display is to use an 8x8 matrix or a 4-digit 7-segment display. Matrices like these are 39multiplexed39 - so to control all the seven-segment LEDs you need 14 pins. That39s a lot of pins, and there are driver chips like the MAX7219 that can control a matrix for you but there39s a lot of wiring to set up and they take up a ton of space. Here at Adafruit we feel your pain! After all, wouldn39t it be awesome if you could control a matrix without tons of wiring? That39s where these adorable LED matrix backpacks come in. We have them in two flavors - a mini 8x8 and a 4-digit 0.56 7-segment. They work perfectly with the matrices we stock in 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. The backpacks come with address-selection jumpers so you can connect up to four mini 8x839s or eight 7-segments (or a combination, such as four mini 8x839s and four 7-segments, etc) on a single I2C bus. The product kit comes with A fully tested and assembled LED backpack Ultra-bright 4-digit 0.56 tall red seven-segment display 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 you39ve been eyeing matrix displays but hesitated because of the complexity, this is the solution you39ve been looking for!
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