# Adafruit CharliePlex LED Matrix Bonnet ## Overview ![](https://cdn-learn.adafruit.com/assets/assets/000/072/653/medium800thumb/adafruit_products_4120.jpg?1552497223) You won't be able to look away from the mesmerizing patterns created by this **Adafruit CharliePlex LED Matrix Display Bonnet**.  This 16x8 LED display can be placed atop any Raspberry Pi computer with a 2x20 connector, for a beautiful, bright grid of 128 CharliePlexed LEDs. It even comes with a built-in CharliePlex driver that is run over I2C. We carry these Bonnets in [a few vivid colors](https://www.adafruit.com/?q=charlieplex%20bonnet). ![](https://cdn-learn.adafruit.com/assets/assets/000/072/368/medium800/adafruit_products_CharliePlexBonnetTopAngle.jpg?1551827301) What is particularly nice about this Bonnet is the I2C LED driver chip has the ability to PWM each individual LED in a 16x8 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. ![](https://cdn-learn.adafruit.com/assets/assets/000/072/370/medium800/adafruit_products_CharliePlexBonnetTop.jpg?1551827324) 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 Pi and can share those pins with other I2C devices and sensors. The bonnet comes fully assembled, no soldering required, so you can plug it in immediately. To program it, [you'll use our CircuitPython library](https://github.com/adafruit/Adafruit_CircuitPython_IS31FL3731), which works with Linux computers like Raspberry Pi. After a pip install, [run some of the examples to display simple graphics or text](https://github.com/adafruit/Adafruit_CircuitPython_IS31FL3731/tree/master/examples). ![](https://cdn-learn.adafruit.com/assets/assets/000/072/369/medium800/adafruit_products_CharliePlexBonnetBottom.jpg?1551827313) - [Next Page](https://learn.adafruit.com/adafruit-charlieplex-bonnet/pinouts.md) ## Primary Products ### Adafruit CharliePlex LED Matrix Bonnet - 8x16 Blue LEDs [Adafruit CharliePlex LED Matrix Bonnet - 8x16 Blue LEDs](https://www.adafruit.com/product/3467) You won't be able to look away from the mesmerizing patterns created by this **Adafruit CharliePlex LED Matrix Display Bonnet**.  This 16x8 LED display can be placed atop any Raspberry Pi computer with a 2x20 connector, for a beautiful, bright grid of 128 charlieplexed... In Stock [Buy Now](https://www.adafruit.com/product/3467) [Related Guides to the Product](https://learn.adafruit.com/products/3467/guides) ### Adafruit CharliePlex LED Matrix Bonnet - 8x16 Yellow LEDs [Adafruit CharliePlex LED Matrix Bonnet - 8x16 Yellow LEDs](https://www.adafruit.com/product/4119) You won't be able to look away from the mesmerizing patterns created by this  **Adafruit CharliePlex LED Matrix Display Bonnet**.  This 16x8 LED display can be placed atop any Raspberry Pi computer with a 2x20 connector, for a beautiful, bright grid of 128... In Stock [Buy Now](https://www.adafruit.com/product/4119) [Related Guides to the Product](https://learn.adafruit.com/products/4119/guides) ### Adafruit CharliePlex LED Matrix Bonnet - 8x16 Green LEDs [Adafruit CharliePlex LED Matrix Bonnet - 8x16 Green LEDs](https://www.adafruit.com/product/4120) You won't be able to look away from the mesmerizing patterns created by this **Adafruit CharliePlex LED Matrix Display Bonnet**.  This 16x8 LED display can be placed atop any Raspberry Pi computer with a 2x20 connector for a beautiful, bright grid of 128... In Stock [Buy Now](https://www.adafruit.com/product/4120) [Related Guides to the Product](https://learn.adafruit.com/products/4120/guides) ### Adafruit CharliePlex LED Matrix Bonnet - 8x16 Cool White LEDs [Adafruit CharliePlex LED Matrix Bonnet - 8x16 Cool White LEDs](https://www.adafruit.com/product/4121) You won't be able to look away from the mesmerizing patterns created by this **Adafruit CharliePlex LED Matrix Display Bonnet**.  This 16x8 LED display can be placed atop any Raspberry Pi computer with a 2x20 connector, for a beautiful, bright grid of 128 charlieplexed... In Stock [Buy Now](https://www.adafruit.com/product/4121) [Related Guides to the Product](https://learn.adafruit.com/products/4121/guides) ### Adafruit CharliePlex LED Matrix Bonnet - 8x16 Warm White LEDs [Adafruit CharliePlex LED Matrix Bonnet - 8x16 Warm White LEDs](https://www.adafruit.com/product/4122) You won't be able to look away from the mesmerizing patterns created by this **Adafruit CharliePlex LED Matrix Display Bonnet**.  This 16x8 LED display can be placed atop any Raspberry Pi computer with a 2x20 connector, for a beautiful, bright grid of 128 charlieplexed... Out of Stock [Buy Now](https://www.adafruit.com/product/4122) [Related Guides to the Product](https://learn.adafruit.com/products/4122/guides) ### Adafruit CharliePlex LED Matrix Bonnets - 8x16 LEDs [Adafruit CharliePlex LED Matrix Bonnets - 8x16 LEDs](https://www.adafruit.com/product/4127) You won't be able to look away from the mesmerizing patterns created by this **Adafruit CharliePlex LED Matrix Display Bonnet**.  This 16x8 LED display can be placed atop any Raspberry Pi computer with a 2x20 connector, for a beautiful, bright grid of 128 charlieplexed... Out of Stock [Buy Now](https://www.adafruit.com/product/4127) [Related Guides to the Product](https://learn.adafruit.com/products/4127/guides) ### Adafruit CharliePlex LED Matrix Bonnet - 8x16 Red LEDs [Adafruit CharliePlex LED Matrix Bonnet - 8x16 Red LEDs](https://www.adafruit.com/product/6115) You won't be able to look away from the mesmerizing patterns created by this **Adafruit CharliePlex LED Matrix Display Bonnet**.  This 16x8 LED display can be placed atop any Raspberry Pi computer with a 2x20 connector for a beautiful, bright grid of 128 charlieplexed... In Stock [Buy Now](https://www.adafruit.com/product/6115) [Related Guides to the Product](https://learn.adafruit.com/products/6115/guides) ## Related Guides - [Adafruit Chainable DS18B20 Extender Breakout](https://learn.adafruit.com/adafruit-chainable-ds18b20-extender-breakout.md) - [Adafruit Fruit Jam](https://learn.adafruit.com/adafruit-fruit-jam.md) - [Adafruit PCA9548 8-Channel STEMMA QT / Qwiic I2C Multiplexer](https://learn.adafruit.com/adafruit-pca9548-8-channel-stemma-qt-qwiic-i2c-multiplexer.md) - [3D-Printed Bionic Eye](https://learn.adafruit.com/3d-printed-bionic-eye.md) - [Raspberry Pi LED Matrix Sand Toy](https://learn.adafruit.com/matrix-led-sand.md) - [Matrix Portal Money-Sensing Tip Jar](https://learn.adafruit.com/matrix-portal-money-sensing-tip-jar.md) - [Adafruit ADS122C04 24-Bit ADC](https://learn.adafruit.com/adafruit-ads122c04-24-bit-adc.md) - [Adafruit TPA2012 2.1W Stereo Audio Amplifier](https://learn.adafruit.com/adafruit-ts2012-2-8w-stereo-audio-amplifier.md) - [Quickstart IoT - Raspberry Pi Pico RP2040 with WiFi ](https://learn.adafruit.com/quickstart-rp2040-pico-with-wifi-and-circuitpython.md) - [Pi Hole Ad Detection Display with PiTFT](https://learn.adafruit.com/pi-hole-ad-pitft-tft-detection-display.md) - [Pi Hole Ad Blocker with Pi Zero W](https://learn.adafruit.com/pi-hole-ad-blocker-with-pi-zero-w.md) - [Introducing Adafruit ItsyBitsy M4](https://learn.adafruit.com/introducing-adafruit-itsybitsy-m4.md) - [PiTFT Python + Pillow Animated Gif Player](https://learn.adafruit.com/pitft-linux-python-animated-gif-player.md) - [Adafruit ESP32-S2 Feather](https://learn.adafruit.com/adafruit-esp32-s2-feather.md) - [Adafruit I2S MEMS Microphone Breakout](https://learn.adafruit.com/adafruit-i2s-mems-microphone-breakout.md)