LED matrix screen
What's much better than just one Light-emitting Diode? countless LEDs! And what exactly is much better than countless LEDs? TWICE AS NUMEROUS LEDS!!!
Utilizing the 16x8 LED Matrix Backpack we've doubled any project's matrix capability by simply making it quite simple to obtain two split 8x8 matrices onto one handy board! Matrices such as these tend to be 'multiplexed' - so to regulate 64 LEDs you want 16 pins also to get a handle on 128 LEDs, you would require 24 pins. That's lots of pins, and you can find driver chips such as the MAX7219 that may control a matrix for your needs but there is lots of wiring to setup in addition they take up a ton of space. Here at Adafruit we feel your discomfort! In the end, won't it is awesome if you could get a grip on two matrices without a great deal of wiring? That's where this beautiful 16x8 LED matrix backpack is available in. It works completely using matrices we stock within the Adafruit store and makes incorporating a bright small display insignificant.
The 16x8 backpack can be great for making scrolling shows or little video clip displays. Within example, we install it so terms stream from matrix to the other - similar to an indication facing a miniature dealership. We driven the demonstration with a Trinket - not included - so that it all is available in a nice compact package.
The backpack makes use of a HT16K33 motorist chip that does all of the heavy lifting for you. This processor chip has a built-in clock so they really multiplex the show. It utilizes constant-current drivers for ultra-bright, constant shade (the photos above are photographed on dimmest setting-to avoid overloading our digital camera!), 1/16 step show dimming, all via an easy I2C interface. Each matrix backpack comes with three address-selection jumpers to help you link around 8 x 1.2" 16x8's collectively about the same I2C bus.
This kit comes with:
A bit of soldering must attach the two matrices on the backpack but its very easy to accomplish and only takes about ten minutes.