How to Count Pulse Using Arduino Pulse Counter - YouTube
Digital Pulse Counter - Codrey Electronics
GitHub - BlackBrix/Arduino-Frequency-Counter-Library: The library makes it possible to measure frequencies with a high resolution and accuracy. Please read the README.md
Smartmeter Pulse Counter (2) - Tinkerman
Digital Pulse Counter - Codrey Electronics
Arduino Frequency Counter Tutorial with Circuit Diagrams & Code
Pulse Counter using Interrupts - Project Guidance - Arduino Forum