Frequency Counter Using Arduino - Electronics Hub

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AVR 8/16 Bit Timers/Counters - Tutorial #11

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Using millis() for timing | Multi-tasking the Arduino

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Arduino Interrupts and Timed Events - DIYI0T

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Advanced Arduino: direct use of ATmega counter/timers

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  • Yes, depending your Arduinos basic clock rate. For example here are the counter-timer input frequencies and periods after pre-scaling, for an ATMega2560s counter-timer 2, and a basic clock rate of 16MHz. The timer has built in "prescaler" value options which determine frequency/period, shown in this table:
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  • 16-Bit Timer/Counter 1 and 3 Modes of Operation: Clear Timer on Compare Match (CTC) Mode-resolution of counter is manipulated by output compare register A (OCRnA) or input capture register (ICRn)-counter is cleared to zero when its value equals either ICRn or OCRnA-TOP is defined by ICRn or OCRnA-interrupt can be generated at compare point

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