Adafruit
Small 1.2 8x8 Ultra Bright Blue LED Matrix [KWM-30881CBB]
Make a scrolling sign, or a small video display with this 8x8 gridded blue LED matrix. Only 1.2" on a side, it is quite visible but not so large it wont p...
Make a scrolling sign, or a small video display with this 8x8 gridded blue LED matrix. Only 1.2" on a side, it is quite visible but not so large it wont plug into a breadboard! There are 16 pins on the side, 8 on each, with 0.1" spacing so you can easily plug it into a breadboard with one row on each side for wiring it up.
Since the display is in a grid, you'll need to 1:8 multiplex control it. We suggest either using a 74HC595 and TPIC6B595 (using the 74HC' to control the 8 anodes at once and then using the TPIC' to drive one cathode at a time) or just using a single MAX7219 which will do the multiplexing work for you.
The Arduino playground has a nice set of tutorials introducing the MAX7219 and 8x8 LED matrices
Jargon buster
Plain-language definitions for the technical terms used above.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
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