Sign In SHOP BLOG LEARN FORUMS 0 Items VIDEOS LEDS / 1.2" LED MATRICES / ADAFRUIT SMALL 1.2" 8X8 LED MATRIX W/I2C BACKPACK - PURE GREEN Adafruit Small 1.2" 8x8 LED Matrix w/I2C Backpack - Pure Green PRODUCT ID: 1632 IN STOCK ADD TO CART 1 1-9 10-99 100+ ADD TO WISHLIST DESCRIPTION TECHNICAL DETAILS DESCRIPTION What's 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 'multiplexed' - so to control 64 LEDs you need 16 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 a matrix without tons of wiring? That's where these lovely LED matrix backpacks come in. We have them in three flavors - a mini 0.7" 8x8, a small 1.2" 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. These 1.2" matrix backpacks come with three address-selection jumpers so you can connect up to eight 1.2" 8x8's together (or a combination, such as four 1.2" 8x8'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" 8x8 pure-green matrix 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 7segment. If you've been eying matrix displays but hesitated because of the complexity, this is the solution you've been looking for! New Products 01/04/2014 Adafruit Small 1.2" 8x8 LED Matrix w/I2C Backpack - Pure Green (0:57) 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! LEARN Adafruit LED Backpacks Control small LED matrices with ease LED Backpack Displays on Raspberry Pi and BeagleBone Black Use LED matrix, bar graph, and segment displays on your favorite small board computer. Adafriend the Virtual Pet Cube Need a friend or a workbench buddy for long hacking sessions? Build one that responds to your interactions, sings, and shows emotion! CircuitPython Hardware: LED Backpacks & FeatherWings How to use LED Backpacks & FeatherWings with CircuitPython! MAY WE ALSO SUGGEST... Adafruit Small 1.2" 8x8 LED Matrix w/I2C Backpack - Small 1.2" 8x8 Ultra Bright Pure Green LED Matrix Adafruit Small 1.2" 8x8 LED Matrix w/I2C Backpack - Red Small 1.2" 8x8 Ultra Bright White LED Matrix + Adafruit Small 1.2" 8x8 LED Matrix w/I2C Backpack - Adafruit Small 1.2" 8x8 LED Matrix w/I2C Backpack - Bi-Color (Red/Green) 12-LED Bargraph - Pack of 2 Bi-Color (Red/Green) 24-Bar Bargraph w/I2C Backpack 16x8 1.2" LED Matrix + Backpack - Ultra Bright 16x8 1.2" LED Matrix + Backpack - Ultra Bright DISTRIBUTORS CONTACT SUPPORT DISTRIBUTORS EXPAND TO SEE DISTRIBUTORS "Flexibility is the key to stability" John Wooden EDUCATORS JOBS FAQ SHIPPING & RETURNS TERMS OF SERVICE PRIVACY & LEGAL ABOUT US ENGINEERED IN NYC Adafruit (R) 4.9