Hướng dẫn sử dụng màn hình 4 số LED 7 đoạn TM1637 với Arduino

If you want to design a clock, timer or counter in your next project, you will need a 4-digit seven-segment display. But a bare 4-digit 7-segment display usually requires 12 connection pins. That’s quite a lot and leaves no room for other modules and sensors.

After all, wouldn’t it be awesome if you could control a 4-digit seven-segment display without tons of wiring? That’s where the TM1637 module comes in. The TM1637 module reduces pin connections to just four. Two pins are used for power connections and the other two pins are for controlling segments.