Sine wave frequency measurement project is designed using pic microcontroller. This project measures the frequency of sine wave. Zero crossing detection technique is used to measure frequency of sine wave.Zero crossing detection using pic microcontroller has been done. PIC16F877A microcontroller timer is used as a counter. Time is measured between two consective zero crossings. Timer is used to measure time. Time is converted back into frequency by taking its inverse. check this post for code of sine wave frequency measurement project using pic microcontroller
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