charlieplex-led-matrix-featherwing-green

Important Note

This entire repo was AI created - including all of the data within. The intent was to A) help me with my personal electronics inventory; and B) see how I could use AI to make that process a bit easier. DO NOT TRUST!

Adafruit 15x7 CharliePlex LED Matrix Display FeatherWing - Green

Details

• Location: Cabinet-1, Bin 23
• Category: FeatherWings
• Type: 15x7 CharliePlex LED Matrix Display FeatherWing
• Color: Green
• LEDs: 105 individually controllable
• Form Factor: Feather-compatible wing
• Quantity: 1
• Product URL: https://www.adafruit.com/product/3136

Description

Mesmerizing 15x7 CharliePlex LED Matrix FeatherWing with 105 bright green LEDs. Features built-in IS31FL3731 I2C driver for easy control with any Feather board. Each LED can be individually controlled with 8-bit PWM dimming for stunning lighting effects and animations.

Specifications

• Part Number: 3136
• Matrix Size: 15x7 (105 LEDs total)
• LED Color: Green
• Driver: IS31FL3731 CharliePlex LED driver
• Interface: I2C (address 0x74 or 0x77)
• PWM Resolution: 8-bit (256 levels) per LED
• Form Factor: Feather-compatible wing
• Voltage: 3.3V
• Dimensions: 51.0mm x 23.0mm x 3.0mm (2.0” x 0.9” x 0.1”)
• Weight: 3.8g (0.1oz)

Image

Features

• 105 Individual LEDs: Full 15x7 matrix of bright green LEDs
• CharliePlex Technology: Efficient LED control with minimal pins
• 8-bit PWM Dimming: 256 brightness levels per LED
• I2C Control: Simple 2-wire interface
• Frame Memory: 8 frames of display memory for animations
• Feather Compatible: Works with any Feather board
• Graphics Library: Arduino and CircuitPython support
• Animation Ready: Built-in frame switching capabilities

Driver Features

• IS31FL3731: Advanced CharliePlex LED driver
• I2C Interface: Addresses 0x74 or 0x77
• 8 Frame Buffer: Store multiple animation frames
• Auto Frame Advance: Hardware-controlled animations
• Individual LED Control: Each LED independently addressable
• Low Power: 3.3V operation

Applications

• LED animations and effects
• Status displays and indicators
• Visual feedback systems
• Art installations
• Wearable projects
• Educational demonstrations
• Interactive displays
• Ambient lighting

Interface

• Communication: I2C (TWI)
• Addresses: 0x74 or 0x77 (selectable)
• Voltage: 3.3V
• Pin Usage: Only I2C pins (SDA/SCL)
• Libraries: Arduino, CircuitPython
• Graphics: Built-in drawing functions

Compatibility

• All Feather Boards: ESP32, M0, M4, RP2040, etc.
• Stackable: Can be used with other FeatherWings
• I2C Sharing: Multiple devices can share the I2C bus
• Cross-Platform: Arduino IDE and CircuitPython

Programming

• Arduino Library: Adafruit_IS31FL3731 library
• CircuitPython: Built-in support
• Graphics: Shape, text, and bitmap drawing
• Animations: Frame-based animation system
• Effects: Built-in patterns and transitions

Notes

• CharliePlexing allows 105 LEDs with minimal pin usage
• IS31FL3731 handles all LED multiplexing automatically
• 8 frames of memory enable smooth animations
• Can create mesmerizing patterns and effects
• Leaves most Feather pins available for other uses
• Perfect for projects requiring eye-catching displays

Tags

featherwing, led-matrix, charlieplexed, green, is31fl3731, i2c, adafruit