{"title":"Adafruit 16x8 LED Matrix Driver Backpack - HT16K33 Breakout","handle":"adafruit-16x8-led-matrix-driver-backpack-ht16k33-breakout","url":"/products/adafruit-16x8-led-matrix-driver-backpack-ht16k33-breakout","description":"The Adafruit 16×8 LED Matrix Driver Backpack is a breadboard-friendly breakout for the HT16K33 multiplexed LED driver. Unlike the pre-configured LED backpacks, this version breaks out all 16 anode and 8 cathode pins, letting you wire up any LED matrix configuration you need — up to 128 individual LEDs.\n\nCommunication is over I2C using just 2 pins, with 8 selectable addresses allowing up to 8 boards on one bus for a total of 1,024 LEDs. The chip also supports reading a 3×13 keypad matrix for input applications.\n\nKey Features\n\n\n16×8 LED Multiplexing – Drive up to 128 individual LEDs\n\nHT16K33 Driver – I2C control with 8 selectable addresses\n\nAll Pins Broken Out – 16 anodes and 8 cathodes for custom wiring\n\nStackable – Up to 8 boards on one I2C bus (1,024 total LEDs)\n\nKeypad Support – Can read a 3×13 keypad matrix (see datasheet)\n\nArduino and Python Support – Libraries available for both platforms\n\n\nIdeal For\n\nCustom LED matrix configurations\nDriving non-standard matrix modules\nLED signage and indicator arrays\nCombined LED display and keypad input projects\n\n\nPackage Contents\n\n1× Adafruit HT16K33 16×8 LED Matrix Driver Backpack breakout\n\n\n\nNote: LED matrix not included. You will need to wire the anodes and cathodes to match your chosen matrix module's pinout. The HT16K33 can turn LEDs on and off but does not support individual PWM dimming.\n\n\nSpecifications\n\n\nDriver Chip – HT16K33\n\nMatrix Capacity – 16×8 (128 LEDs)\n\nKeypad Capacity – 3×13 matrix\n\nInterface – I2C (8 selectable addresses)\n\nMax Boards per Bus – 8 (1,024 total LEDs)\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":7819,"title":"Default Title","sku":"AF-1427","price":16.24,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":92,"option1":"Default Title"}]}