Click here to purchase one from the Adafruit shop
The IS31FL3731 will let you get back to that classic LED matrix look, with a nice upgrade! This I2C LED driver chip has the ability to PWM each individual LED in a 16x9 grid so you can have beautiful LED lighting effects, without a lot of pin twiddling. Simply tell the chip which LED on the grid you want lit, and what brightness and it's all taken care of for you.
The IS31FL3731 is a nice little chip - it can use 2.7-5.5V power and logic so its flexible for use with any microcontroller. You can set the address so up to 4 matrices can share an I2C bus. Inside is enough RAM for 8 seperate frames of display memory so you can set up multiple frames of an animation and flip them to be displayed with a single command.
This chip is great for making small LED displays, and we even designed the breakout to match up with our ready-to-go LED grids in red, yellow, green, blue and white. Sandwich the driver and matrix breakout, solder together for a compact setup. Or you can DIY your own setup, just follow the LED grid schematic in the IS31FL3731 datasheet.
See the following products for various flavors of this product:
- https://www.adafruit.com/products/2946 (the IS31FL breakout)
- https://www.adafruit.com/products/2973 (blue LEDs)
- https://www.adafruit.com/products/2974 (cool white LEDs)
- https://www.adafruit.com/products/2948 (yellow LEDs)
- https://www.adafruit.com/products/2947 (red LEDs)
- https://www.adafruit.com/products/2972 (green LEDs)
PCB files for the IS31FL3731 CharliePlex LED Breakouts. The format is EagleCAD schematic and board layout
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Designed by Limor Fried/Ladyada for Adafruit Industries. Creative Commons Attribution/Share-Alike, all text above must be included in any redistribution. See license.txt for additional information.