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LEDS / OTHER MATRICES / ADAFRUIT 16X8 LED MATRIX DRIVER BACKPACK - HT16K33 BREAKOUT
DESCRIPTION
This is the magic sauce in our 7-segment and matrix backpacks, now available in breadboard-
friendly breakout board format. The HT16K33 is a neat little chip that has the ability to drive a
multiplexed 16x8 matrix (that's 128 individual LEDs). The communication protocol is I2C so it
uses only 2 pins, and you can have up to 8 selectable I2C addresses so thats a total of 8
matrices, each one controlling 16x8 LEDs for 1024 total LEDs.
Unlike our LED matrix/segment backpacks, this breakout does not have holes for an existing
LED module. Instead, we break out all 16 anodes and 8 cathodes as well as the I2C and power
pins. You'll need to wire up the anodes and cathodes by checking out your matrix datasheet
and lining up the pins. Wire up any matrix you want and use our handy library to write to the
display however you wish. Note that the driver can turn LEDs on and off but does not have the
ability to individually PWM dim them. This chip is rock solid, has Arduino & Pi example code
written for it and is easy to use.
The chip supports also reading a 3x13 keypad matrix but we do not have example code for it in
our library, check the datasheet for more details about the keypad functionality
Adafruit 16x8 LED Matrix Driver Backpack - HT16K33 Breakout (3:16)
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Adafruit 16x8 LED
Matrix Driver
Backpack - HT16K33
Breakout
PRODUCT ID: 1427
IN STOCK
1-9
10-99
100+
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DESCRIPTION
TECHNICAL DETAILS
TECHNICAL DETAILS
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MAY WE ALSO SUGGEST...
Datasheets, schematics, Fritzing objects and more in the tutorial
Dimensions: 35.77mm / 1.4" x 20.37mm / 0.8" x 4.03mm / 0.15"
I2C addresses!
I2C addresses from 0x00 to
0x7F (inclusive)
Adafruit Bicolor LED Square
Pixel Matrix with I2C
Adafruit 0.56" 4-Digit 7-
Segment Display w/I2C
Adafruit 0.56" 4-Digit 7-
Segment Display w/I2C
Adafruit Mini 0.8" 8x8 LED
Matrix w/I2C Backpack -
Adafruit Small 1.2" 8x8 LED
Matrix w/I2C Backpack -
Adafruit Small 1.2" 8x8 LED
Matrix w/I2C Backpack - Red
Adafruit 0.56" 4-Digit 7-
Segment Display w/I2C
Adafruit 0.56" 4-Digit 7-
Segment Display w/I2C
Adafruit Mini 8x8 LED Matrix
w/I2C Backpack - Yellow
Adafruit Mini 8x8 LED Matrix
w/I2C Backpack - Ultra
Adafruit Mini 8x8 LED Matrix
w/I2C Backpack - Red
Adafruit 0.56" 4-Digit 7-
Segment Display w/I2C
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"I'm an engineer. I see myself as a
toolmaker and the musicians are my
customers... They use my tools" -
Robert Moog
