Uploaded January 2021 | Updated September 2026, 1 week ago

---

TM1638 module is programmed as a frequency counter displaying frequency of TTL periodic signals.

Link to code:
akuzechie.blogspot.com/2021/01/tm1638-frequency-counter.html

Contents:
0:00 Introduction
0:14 Block Diagram
0:42 C++ Sketch
2:53 Demonstration
3:30 Conclusion