Baosity 4 Digit 7-Segment 0.56 inch LED Display Module Clock HT16K33 I2C forPack of 5

Description: - These 7-segment displays normally require 13 pins (5 characters and 8 total segments each). - 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. - The controller chip takes care of everything, drawing all the LEDs in the background. - All you have to do is write data to it using the 2-pin I2C interface. - There are three address select pins so you can select one of 8 addresses to control up to 8 of these on a single 2-pin I2C bus (as well as whatever other I2C chips or sensors you like). - The driver chip can dim the entire display from 1/16 brightness up to full brightness in 1/16th steps. - It can't dim individual LEDs, only the entire display at once. Specification: - Size: Approx. 5.03 x 2.68 x 1.2 cm/2 x 1.1 x 0.5 inch Package Includes: 5 Pieces 0.56" 4 Digit LED Display