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Frequency Counter [Project]
posted December 24 2013 12:32.51 by spic0m

This project uses a minimal number of components for a very economical and compact design. A bare-bones Arduino clone is at the heart of this project and the measured frequency is shown on an LCD display.

The maximum frequency that this can measure is about 8 MHz (at a 50% duty cycle). Despite the fact that this counts the frequency on one of the digital pins, maker have found that it will quite happily measure sine and triangle waves providing that they have a suitable amplitude.

[Link: instructables]

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