Tm1638 3-wire 16 Keys 8 Bits Keyboard Buttons Display Module Digital Tube Board Scan And Key Led Geekcreit For Arduino

Specifications only need 3 wire control adapts tm1638 digital tube drive chip common anode led digital tube only need three common io and could drive no need mcu scan save mcu sources with 8 8 digital tube including decimal point 2 8 16 buttons support 8 degree brightness adjustment weight 34 g size about 70mm x 70mmpackage included 1 x tm1638 16 buttons display module with pin cable

Specifications only need 3 wire control adapts tm1638 digital tube drive chip common anode led digital tube only need three common io and could drive