7 Segment Led Ht16k33 Backpack

This backpack uses an i2c constant current matrix controller on the back of the pcb so you only need 2 pins to drive it.

7 segment led ht16k33 backpack. Led backpack displays are a great way to add a simple bright led display to your project. There are maker friendly modules available with 7segment leds 14segment leds dot matrix and even blank pcb als simple backpacks for your own project. As the ht16k33 communicates via i2c you only need two gpios. This ht16k33 controller can drive up to 128 multiplexed leds in matrix bar graph 7 segment numeric and even 14 segment alpha numeric.

The ht16k33 is a neat little chip that has the ability to drive a multiplexed 16x8 matrix that s 128 individual leds. The 7 segment displays normally require 16 pins to drive. A fun way to make a small display is to use an 8x8 matrix or a 4 digit 7 segment display. The functions included in this demo sketch should be all that s needed to control the ht16k33 s led matrix from an arduino.

Adafruit industries unique fun diy electronics and kits adafruit 0 56 4 digit 7 segment display w i2c backpack yellow id. This is the magic sauce in our 7 segment and matrix backpacks now available in breadboard friendly breakout board format. These backpacks drive the massive 1 2 7 segment modules. The ht16k33 led driver chip can control up to 16 x 8 leds.

This version of the led backpack is designed for these big bright 7 segment displays. These 7 segment displays normally require 13 pins 5 characters and 8 total segments each this backpack solves the annoyance of using 13 pins or a bunch of chips by having an i2c constant current matrix controller sit neatly on the back of the pcb. 879 what s better than a single led. With 2 leds per segment these make a gorgeous and impressive display.

Adafruit led backpack library for our 8x8 matrix and 7 segment led backpacks adafruit adafruit led backpack.