TM1638 3 Wire MCU Control 8 bit LED 16 Keys Keyboard Scanning and Display Module for Arduino

Feature: 1. Made of high quality material, being practical to use, it uses TM1638 digital tube driver chip. 2. Only need 3 ordinary IOs can drive, and no MCU scanning is required, which saves MCU resources very much. 3. With eight 8 segment digital tubes including decimal point, it is with total 16 buttons, being convenient to use. 4. Supporting 8 levels of brightness adjustment. As a display module, its color is blue. 5. Working as a practical accessory to keyboard, it is given with high performance via effecient process. Specification: Item Type: LED module Model: TM1638 Color: Blue Size: Approx. 70 x 70mm 2.8 x 2.8 in Package List: 1 x TM1638 Module1 x Connection Cable