8-Bit Digital LED Tube 8-Bit TM1638 Key Display Module for Arduino

With 8 keys�� 8 LED�� 8-bit digital tubes common cathode; - Can directly connect with singlechip such as STC; - Provide Ardiuno driving program; - Adopt TM1638 chip�� has the common peripheral circuit in the mentioned 3 singlechips. Its most remarkable feature is it only needs 3 IO of the single chip to drive�� scan display and key scan do not need singlechip but register to transmit data or test keys�� meantime saving MCU source. Provide sample program once buy this module. - Wire Connecting Method: Connect VCC GND to 5V power�� connect STB CLK DIO to singlechip IO port.