TM1638 LED and keypad module

8 Bits, 8 keys, 8 LEDs, 8 digital tubes, common cathode LED digital tube.
With TM1638 Chip, this module gather more than three common SCM peripheral circuits.
The advantage is only three IO ports will be occupied when it drives.
SCM doesn’t need to work for scaning display and key scaning.
It only need to read the relevant register to send display data or test button so it save MCU resources effectively.
Keys are sensitive and display effectively.

Technical Specification:

• Weight: 28g
• Material: Glass fiber reinforced plastic, PBT shell, PA blades
• Use TM1638 digital tube drive chip to drive a common cathode LED digital tube.
• Can be extended to 3 * 8 buttons, led digital tube and can be controlled separately.
• Support 8 brightness control, led digital tube and use the same brightness.
• Support cascading up to 6 of the same module.
• Wiring: VCC GND connected the 5V power supply, STB CLK DIO connected microcontroller IO port.
• 8 LED, 8-bit digital tube and 8 buttons, common cathode LED digital tube, such as STC microcontroller can be directly connected.