TM1638 8-Bit LED Digit Tube Display Module 16 Keys Keyboard

• 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 digital tube (including decimal point).
• 2*8 16 buttons.
• Support 8 degree brightness adjustment.

For the wiring connect VCC GND to a 5V supply and connect STB CLK DIO to the microcontroller IO ports. 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.

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