SparkFun LED Array - 8x7
COM -1 3795 RO HS
images are CC BY-NC-SA 3.0
Description:
The SparkFun LED Array is a set of 56 red LEDs arranged in a nice 8x7
grid. This little board requires eight pins while the library supports any ATmega 168
and 328-based Arduino device. The SparkFun LED Array was developed to be used
in conjunction with the BadgerStick as a fun and interactive way for people to learn
about soldering and engage with SparkFun products at the multiple trade shows we
appeared at. Now this LED array is available to everyone!
This board relies on the Charlieplexing technique to control individual LEDs, which
means less GPIO pins are used (as opposed to a traditional grid format). Through the
use of Charlieplexing we have been able to control all 56 LEDs with a total of only
eight pins (labeled ‘A’ through ‘H’). With a little bit of code you will be able to cycle
through all combinations of the pins to turn each LED on individually, and if cycled
fast enough, you can create simple images and text!
https://www.sparkfun.com/products/13795
3/29/2016
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