ARDUINO Accessory, 8-Bit Digital LED Tube 8-Bit TM1638 8 Key Display Module For AVR Arduino

Features: 1. 8 key 2. 8 LED common cathode 3. 8 a digital tube common cathode Use TM1638 digital tube drive chip to drive common cathode LED digital tube Hardware – Connection to an Arduino-compatible board (or other MCU) is quite simple. The pinouts are shown on the rear of the PCB, and match the fitting on the ribbon cable. If you look at the end of the cable as such: The top-right hole is pin one, with the top-left being pin two, the bottom-right pin nine and bottom-left pin ten. Therefore the pinouts are: Vcc (5V) GND CLK DIO STB1 STB2 STB3 STB4 STB5 not connected For Arduino use, pins 1~4 are the minimum necessary to use one module. Each additional module will require another digital pin connected to STB2, STB3, etc. More on this later. Please note that each module set to full brightness with every LED on consumes 127mA, so it would be wise to use external power with more than one module and other connections with Arduino boards. After spending some time with the module, I made a quick shield with an IDC header to make connection somewhat easier: