Computer engineer Thiery Guennou based in France has created a new Arduino compatible precision frequency counter 5 or 120 MHz. The inspiration behind the Arduino board was to build an open, very ...

Making a microcontroller perform as a frequency counter is a relatively straightforward task involving the measurement of the time period during which a number of pulses are counted. The maximum fr… ...

When looking to port over a frequency measurement library he ended up writing his own that works better and is much more portable. He had two big beefs with the Arduino Frequency Counter Library.

The GPSDO used a push button and was read by an ADC on the Arduino Nano (Figure 3). This frequency counter design uses 2 pushbuttons that are connected to analog comparators to read their states.