Key&Led TM1638

Including the following resources:

• 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

How to connect:

• VCC GND 5V power supply, STB CLK DIO MCU I/O port
• This module for the chip TM1638, set the above three kinds of single chip microcomputer common peripheral circuit, the biggest characteristic is to simply take microcontroller three IO mouth can drive, scanning display and key scan don't need microcontroller intervention, only need to register to display data related to reading and writing or testing buttons, save MCU resources. Buy the module provides an example program.

Wiring methods :

• VCC GND connected 5V supply, STB CLK DIO connected microcontroller IO port.