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 ...

Note: This counter is based on chip 74xx93 (counter) used as a frequency divider by 8 the maximum bandwidth for arduino to count is 8 Mhz and we can multiply this number using 74xx93 or any other ...

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 ...

There’s a transformer for the linear supply, through-hole components, and an Intersil frequency counter on a chip. Everything is easy to get to and large enough to see.

as an external clock with frequency other than 8MHz or 16MHz to Arduino would require change of crystal ... Also is it possible to run a coarse counter on the external reference clock and obtain at ...