{"product_id":"16-x-8-12-led-matrix-backpack-ultra-bright-square-white-leds","title":"16 x 8 1.2\" LED Matrix + Backpack - Ultra Bright Square White LEDs","description":"\u003cp\u003eWhat's better than a single LED? Lots of LEDs! And what's better than lots of LEDs? \u003cstrong\u003eTWO TIMES AS MANY LEDS!!!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWith the 16x8 LED Matrix Backpack, we've doubled your project's matrix capacity by making it super easy to get two separate 8x8 matrices onto one handy board! Matrices like these are 'multiplexed' - so to control 64 LEDs you need 16 pins and to control 128 LEDs, you'd need 24 pins. That's a lot of pins, and there are driver chips like the MAX7219 that can control a matrix for you but there's a lot of wiring to set up and they take up a ton of space. Here at Adafruit, we feel your pain! After all, wouldn't it be awesome if you could control two matrices without tons of wiring? That's where this lovely 16x8 LED matrix backpack comes in. It works perfectly with the matrices we stock in the Adafruit shop and makes adding a bright little display trivial.\u003c\/p\u003e\n\u003cp\u003eThe 16x8 backpack is also great for making scrolling displays or small video displays. In our example, we set it up so words flow from one matrix to the other - kind of like a sign in front of a miniature car dealership. We powered the demo with a Trinket - \u003cstrong\u003enot included\u003c\/strong\u003e - so it all comes in a nice compact package.\u003c\/p\u003e\n\u003cp\u003eThe backpack uses an HT16K33 driver chip that does all the heavy lifting for you. This chip has a built-in clock so they multiplex the display. It uses constant-current drivers for ultra-bright, consistent colour\u003cstrong\u003e (the images above are photographed at the dimmest setting to avoid overloading our camera!)\u003c\/strong\u003e, and 1\/16 step display dimming, all via a simple I2C interface. Each matrix backpack comes with three address-selection jumpers so you can connect up to 8 x 1.2\" 16 x 8's together on a single I2C bus. \u003cbr\u003e\u003cbr\u003eThis kit comes with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA fully tested and assembled 16 x 8 1.2\" LED Backpack\u003c\/li\u003e\n\u003cli\u003e2x Ultra-bright square 8 x 8 white matrices\u003c\/li\u003e\n\u003cli\u003e4-pin Header\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA bit of soldering is required to attach the two matrices onto the backpack but it's very easy to do and only takes about 10 minutes.\u003c\/p\u003e\n\u003cp\u003eOf 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 run 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!\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eRevision History\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAs of February 10th, 2025\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e- We updated this PCB with Adafruit Pinguin to make a lovely and legible silkscreen, along with the addition of two Stemma QT connectors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv class=\"panel-collapse collapse in\" id=\"tab-technical-details-content\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-lg-12 col-md-12 col-sm-12 col-xs-12\"\u003e\n\u003cul\u003e\n\u003cli\u003eBackpack Dimensions: 72mm x 32mm x 2mm\u003c\/li\u003e\n\u003cli\u003eMatrix Dimensions: 32mm x 32mm x 7mm\u003c\/li\u003e\n\u003cli\u003ePin Length: 13mm\u003c\/li\u003e\n\u003cli\u003eThis board\/chip uses I2C 7-bit addresses between 0x70-0x77, selectable with jumpers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMatrix Datasheet\u003c\/li\u003e\n\u003cli\u003eTutorial and Downloads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":49567682429155,"sku":"jeb1787257377696","price":16.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/2961\/4819\/files\/16-x-8-12-led-matrix-backpack---ultra-bright-square-white-leds_1.jpg?v=1787257382","url":"https:\/\/regalcladfashion.shop\/products\/16-x-8-12-led-matrix-backpack-ultra-bright-square-white-leds","provider":"My Store","version":"1.0","type":"link"}