I wanted to make a frequency meter that displays the frequency on an oled display. The first idea was to use pulseIn() but I discovered it's a blocking function and it messed up with the oled, as it took quite long to update the screen. Now I am an absolute begginer and I want to avoid at any costs the interrupts, so is there any kind of code/library that will be useful? The frequency is generated by a 555 timer and it ranges from 10Hz to 10kHz. Any suggestions?
Edit: I am using an Arduino nano
Edit: I am using an Arduino nano
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