μMoth (“micro-moth”) is the world's smallest full-spectrum acoustic development board, based on AudioMoth and the Gecko processor range. Just like its namesake, the moth, μMoth can listen at audible frequencies, well into ultrasonic frequencies. It measures just 25mm x 36mm and weighs 4 grams. It is capable of recording uncompressed audio to microSD card at rates from 8,000 to 384,000 samples per second. It also shares the same supporting software and firmware as AudioMoth.

Features

• EFM32 Gecko processor
• Capable of recording at sample rates up to 384kHz
• Records uncompressed WAV files to microSD card
• Powered by a two pin JST-PH connector 
• Can be used with 3.7 V - 6 V batteries
• Analog MEMS microphone
• Analog pre-amplifier with adjustable gain
• Measures just 26 x 36 mm
• Configurable USB interface
• Onboard real-time clock keeps track of time in UTC
• Exposed header for GPIO expansion 

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