7 Segment Led Ht16k33 Backpack

This ht16k33 controller can drive up to 128 multiplexed leds in matrix bar graph 7 segment numeric and even 14 segment alpha numeric.

7 segment led ht16k33 backpack.

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. A fun way to make a small display is to use an 8x8 matrix or a 4 digit 7 segment display. Matrices like these are multiplexed so to control all the seven segment leds you need 14 pins. These backpacks drive the massive 1 2 7 segment modules.

Adafruit industries unique fun diy electronics and kits adafruit 0 56 4 digit 7 segment display w i2c backpack yellow id. There are maker friendly modules available with 7segment leds 14segment leds dot matrix and even blank pcb als simple backpacks for your own project. This version of the led backpack is designed for these big bright 7 segment displays. With 2 leds per segment these make a gorgeous and impressive display.

The 7 segment displays normally require 16 pins to drive. These displays get their name because of the controller chip attached to the back of them like a backpack. For the demo sketch i m using a 16 bit buffer which makes each array element correspond to all outputs for a given com pin you could also use an 8 bit buffer which would make things easier if i only had 7 segment displays. The functions included in this demo sketch should be all that s needed to control the ht16k33 s led matrix from an arduino.

The ht16k33 led driver chip can control up to 16 x 8 leds. Adafruit led backpack library for our 8x8 matrix and 7 segment led backpacks adafruit adafruit led backpack. Led backpack displays are a great way to add a simple bright led display to your project. 879 what s better than a single led.

This is the magic sauce in our 7 segment and matrix backpacks now available in breadboard friendly breakout board format.