Controlling TM1638 modules with Arduino
Connecting the TM1638 to Arduino:
Arduino TM1638 based board 3.3V ------------------ VCC GND ------------------ GND PIN #7 ------------------ STB PIN #8 ------------------ DIO PIN #9 ------------------ CLK
Blog post: http://blog.3d-logic.com/2015/01/10/using-a-tm1638-based-board-with-arduino/