The Adafruit 15x7 CharliePlex LED Matrix Display FeatherWing - Cool White adds 105 individually dimmable LEDs to any Feather, with an I2C driver providing 256 brightness levels and built-in memory for creating animated displays.
You wont be able to look away from the mesmerizing patterns created by this Adafruit15x7 CharliePlex LED Matrix Display FeatherWing. This 15x7 LED display can be paired with any of their Feather boards for a beautiful, bright grid of 105 charlieplexed LEDs. It even comes with a built-in charlieplex driver that is run over I2C.
We carry these FeatherWings in two vivid colours cool white and red - this is the cool white matrix.
What is particularly nice about this Wing is the I2C LED driver chip has the ability to PWM each individual LED in a 15x7 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. You get 8-bit (256 level) dimming for each individual LED.
The IS31FL3731 is a nice little chip - and it runs happily over 3.3V power. Inside is enough RAM for 8 separate frames of display memory so you can set up multiple frames of an animation and flip them to be displayed with a single command. Since it uses I2C, it takes up only the SDA/SCL pins on your Feather and can share those pins with other I2C devices and sensors.
Adafruit's graphics library makes it easy to draw shapes, text and bitmaps for some strikingly beautiful LED displays. Check out the tutorial for assembly instructions, CircuitPython and Arduino example code, pinouts, schematics and more!
Features
15x7 CharliePlex LED matrix display with 105 total LEDs
Cool White LED colour
Compatible with any Adafruit Feather board
Built-in IS31FL3731 charlieplex driver chip
I2C interface (SDA/SCL pins only)
8-bit (256 level) PWM dimming for each individual LED
3.3V power compatible
8 frames of display memory for animations
Shareable I2C bus with other devices and sensors
Compatible graphics library for shapes, text and bitmaps
Includes assembly instructions, CircuitPython and Arduino code examples
Specifications
Uses I2C address 0x74 or 0x77
Dimensions: 51.0mm x 23.0mm x 3.0mm
Weight: 3.8g
Revision History
As of November 28, 2022 we've updated this PCB with Adafruit Pinguin to make a lovely and legible silkscreen. This version also has brighter LEDs!
