4 Digit LED display
What exactly is a lot better than an individual LED? a lot of LEDs! An enjoyable solution to make a numeric display is to utilize a 4-digit 7-segment screen. LED matrices such as these are 'multiplexed' - so to manage most of the seven-segment LEDs you will need 14 pins. That's plenty of pins, and you will find motorist potato chips just like the MAX7219 that may get a handle on a matrix available but there is countless wiring to set up and they take up a huge amount of room. At Adafruit we feel your discomfort! All things considered, won't it be awesome if you could get a grip on a matrix without a lot of wiring? That's where these adorable LED matrix backpacks may be found in. We all of them for multiple 8x8 and 7-segment displays. They work perfectly with all the displays we stock in Adafruit shop and then make incorporating a bright show trivial.
The backpacks make use of a motorist chip that does all heavy lifting obtainable: they will have a built in clock so they multiplex the show. They normally use constant-current drivers for ultra-bright, consistent color (the pictures above tend to be photographed at dimmest setting-to stay away from overloading our digital camera!), 1/16 step display dimming, all via an easy I2C program. The backpacks incorporate address-selection jumpers in order to link up to eight 7-segments (or a mix, such as four mini 8x8's and four 7-segments, an such like) for a passing fancy I2C coach.
The item kit includes:Some soldering must attach the matrix on the backpack but its quite simple to accomplish and only takes about five full minutes.
Naturally, in classic Adafruit fashion, we have an in depth guide showing you how to solder, line and control the screen. We also penned good libraries for backpacks to get working in less than half an hour, showing numbers from the 7-segment for either Arduino or Raspberry Pi. If you've already been eyeing matrix displays but hesitated due to the complexity, his could be the answer you've been searching for!