The Adafruit 15x7 CharliePlex LED Matrix Display FeatherWing - Red 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 red 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 LEDs
Compatible with all Feather boards
Built-in IS31FL3731 I2C LED driver chip
8-bit (256 level) PWM dimming for individual LEDs
8 frames of display memory for animations
Operates on 3.3V power
Uses only I2C (SDA/SCL) pins
Compatible with other I2C devices and sensors
Red LED colour
Includes graphics library for shapes, text and bitmaps
Supports CircuitPython and Arduino code
Specifications
Uses I2C address 0x74 or 0x77
Dimensions: 51.0mm x 23.0mm x 3.0mm
Weight: 3.8g
Revision History
As of October 2022 we've updated this PCB with Adafruit Pinguin to make a lovely and legible silkscreen - you may get the new PCB or the older version with vector fonts - both are identical other than the fancy silkscreen.
