{"product_id":"adafruit-bi-color-red-green-24-bar-bargraph-w-i2c-backpack-kit","title":"Adafruit Bi-Color (Red\/Green) 24-Bar Bargraph w\/I2C Backpack Kit","description":"\u003cp\u003eWhat's better than a single LED? Lots of LEDs! A fun way to make a small linear display is to use two 12-bar Bi-color bar-graphs.\u003c\/p\u003e\n\u003cp\u003eHowever, this LED bargraph is 'multiplexed' - so to control all the 48 LEDs you need a lot of pins. Wouldn't it be awesome if you could control a colorful bargraph without tons of wiring? That's where this adorable LED bar-graph backpack comes in. \u003cbr\u003e\u003cbr\u003eThe backpack uses a driver chip that does all the heavy lifting for you:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIt has a built in clock so it can multiplex the display.\u003c\/li\u003e\n\u003cli\u003eIt uses constant-current drivers for ultra-bright, consistent color, 1\/16 step display dimming, all via a simple I2C interface.\u003c\/li\u003e\n\u003cli\u003eThe backpack comes with address-selection jumpers so you can connect up to eight of these bar-graphs on a single I2C bus. You can also mix-and-match the bar-graph breakout with our other types of I2C LED backpacks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003eThe product kit comes with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA fully tested and assembled LED backpack stick\u003c\/li\u003e\n\u003cli\u003eTwo \u003ca href=\"http:\/\/www.adafruit.com\/datasheets\/KWL-R1230XDUGB.pdf\" target=\"_blank\"\u003e12-bar bi-color bar-graphs\u003c\/a\u003e\n\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 matrix onto the backpack but its very easy to do and only takes about 5 minutes. \u003cbr\u003e\u003cbr\u003eAdafruit have provided a \u003ca href=\"http:\/\/learn.adafruit.com\/adafruit-led-backpack\/\" target=\"_blank\"\u003edetailed tutorial\u003c\/a\u003e showing you how to solder, wire and control the display. They even wrote a \u003ca href=\"https:\/\/github.com\/adafruit\/Adafruit-LED-Backpack-Library\" target=\"_blank\"\u003elibrary for the backpacks\u003c\/a\u003e so you can get running in under half an hour, displaying images on the matrix or numbers on the 7-segment.\u003c\/p\u003e\n\u003cp\u003eIf you've been eyeing matrix displays but hesitated because of the complexity, this is the solution you've been looking for!\u003c\/p\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":568732169,"sku":"ADA1721","price":9.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0174\/1800\/products\/1721.jpg?v=1393425005","url":"https:\/\/shop.pimoroni.com\/en-eu\/products\/adafruit-bi-color-red-green-24-bar-bargraph-w-i2c-backpack-kit","provider":"Pimoroni Ltd","version":"1.0","type":"link"}