From our › Theremin Project I derived this Frequency Counter Library. The library makes it possible to measure frequencies with a high resolution and accuracy. The Frequency input is fixed to digital ...

frequency: 1.5 Hz, delta: -0.1 Hz, counts: 9 You can also use the program as an event counter. It increments the counts value for each high to low change on the input pin. Start the Arduino IDE, open ...

So [Todd] has set out to build an Arduino frequency counter for a Kenwood TS-520S HF ham radio. This post (and the video found after the break) doesn’t cover the entire project. It’s rather ...

[mircemk] had previously built a frequency counter using an Arduino, with a useful range up to 6 MHz. Now, they’ve implemented a new design on a far more powerful STM32 chip that boosts the ...