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Microphone Circuit, First Iteration

A project log for BoatDetect

detect, log, and analyze boat traffic

John OpsahlJohn Opsahl 06/14/2020 at 19:340 Comments

The first iteration of the piezo diaphragm microphone circuit includes:

The microcontroller will wake up at 2-4 second intervals, measure voltage at the rectifier, and write the analog voltage reading and RTC timestamp to the SD card. 

Parts are on order and should arrive in 30 to 50 days.

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