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AudioMoth

 

AudioMoth is a low-cost, full-spectrum acoustic logger, based on the Gecko processor range from Silicon Labs. Just like its namesake the moth, AudioMoth can listen at audible frequencies, well into ultrasonic frequencies. It is capable of recording uncompressed audio to microSD card at rates from 8,000 to 384,000 samples per second and can be converted into a full-spectrum USB microphone.

  • EFM32 Gecko processor

  • Capable of recording at sample rates up to 384kHz

  • Records uncompressed WAV files to microSD card

  • Can be converted into a full-spectrum USB microphone

  • Powered by 3 x AA batteries

  • Analog MEMS microphone

  • Analog pre-amplifier with adjustable gain

  • Measures just 58 x 48 x 15 mm

  • Configurable USB interface

  • Onboard real-time clock keeps track of time in UTC

  • Exposed header for 3.5mm jack mic from version 1.2.0 onwards 

Click Getting Started for help setting up a new AudioMoth.

A manual containing all AudioMoth information for offline usage, is available 
here.
HydroMoth

HydroMoth

 

HydroMoth is a variant of the standard AudioMoth specifically designed to be deployed in the underwater case.

  • Re-positioned LEDs for improved visibility in the underwater case

  • Improved 32.768 kHz MEMS oscillator to reduce clock drift

  • In-built magnetic reed switch, which enables recordings to be started and stopped in wet conditions without opening the case.

  • Compatible with all AudioMoth software

 

 


An application note containing examples of HydroMoth deployments,

is available here.

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AudioMoth Dev

 

AudioMoth Dev is a variant of the standard AudioMoth 1.2.0 designed as a development board for skilled users to integrate into other boards and products.

  • Power socket (JST-PH) supporting 3.7 - 6V batteries

  • All controls, indicators and IO ports broken out to 5 JST-PH style headers

  • 3.5 mm jack socket for external electret condenser microphones

  • Compatible with all AudioMoth software

The AudioMoth Dev datasheet is available here.

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MicroMoth

MicroMoth is a micro-size variant of the standard AudioMoth 1.1.0 open-source design, while maintaining full compatibility with all versions of the existing firmware.

  • Power socket (JST-PH) supporting 3.7 - 6V batteries

  • Measures just 32 x 24 mm

  • Weighs just 5g (excluding battery)

  • Compatible with all AudioMoth software

The MicroMoth datasheet is available here.

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USB Microphone

AudioMoth USB Microphone

AudioMoth USB Microphone is a variant of the standard AudioMoth 1.2.0 design which removes many of the components which aren't needed when an AudioMoth is being used as a USB microphone. It's designed to specifically run the AudioMoth USB Firmware and uses an identical audio front-end to the AudioMoth 1.2.0 and AudioMoth Dev variants.

  • 3.5 mm jack socket for external electret condenser microphones

  • Supported by Windows, Mac, and Linux (including Raspberry Pi)

  • Measures just 40 x 35 mm

  • Compatible with the AudioMoth USB Microphone firmware and

       the AudioMoth Live App

An application note describing the use of AudioMoth USB Microphone, 

is available here.

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Cases
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IPX7 Waterproof Case

 

The AudioMoth IPX7 Waterproof Case is designed specifically for AudioMoth version 1.0.0, 1.1.0 and 1.2.0 (without the 3.5mm socket). The case is made from injection-moulded polycarbonate and comes with an adjustable velcro strap, which makes securing AudioMoth simple and easy. The case is compact and highly resilient and will house AudioMoth for extended periods of time in a wide variety of terrestrial environments.

  • Injection-moulded polycarbonate protective case

  • Sealed using an easy-to-use clasp and compression o-ring

  • Rain hood designed to prevent water pooling

  • Opening protected by a waterproof GAW334 acoustic vent 

  • Comes with a removable adjustable velcro strap

  • Available in green

 

An application note describing the IPX7 Waterproof Case,

is available here.

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Underwater Case

 

The AudioMoth Underwater Case enables a standard AudioMoth to make recordings underwater. The case is designed specifically for AudioMoth version 1.2.0 (without the 3.5mm socket). Although other versions of AudioMoth will fit inside the case, we recommend version 1.2.0 to minimise self-noise in recordings. The case is made from injection-moulded polycarbonate and comes with an adjustable velcro strap, which makes securing AudioMoth simple and easy. The case is compact and highly resilient and will house AudioMoth for extended periods of time at depths of 30-60m.​

  • Injection-moulded polycarbonate protective case

  • Sealed using an easy-to-use clasp and compression o-ring

  • Submersible underwater case

  • Tested to a depth of 30m for 2 months

  • Comes with a removable adjustable velcro strap

  • Available in frosted transparent 

An application note describing the use the Underwater Case,

is available here.

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AudioMoth USB Microphone Case

 

The AudioMoth USB Microphone Case is designed specifically for AudioMoth USB Microphone. The case is made from injection-moulded polycarbonate with an accessible polycarbonate switch, protecting the device during hand-held applications. 

  • Injection-moulded polycarbonate protective case

  • Opening protected by a splashproof GAW112 acoustic vent 

  • Available in green and blue

An application note describing the use of the AudioMoth USB

Microphone Case, is coming soon. 

 

Accessories

AudioMoth GPS Board

 

The AudioMoth GPS Board is a hardware module that extends AudioMoth with a connected GPS module and magnetic switch. The AudioMoth GPS Board comes in two variants, using different GPS modules: the PA1616S module that uses GPS satellites only, and the PA1616D module that uses both GPS and GLONASS satellites.

  • Interfaces with AudioMoth using the GPIO and power pads / headers

  • Automatically supported by the standard AudioMoth firmware

  • Also compatible with the AudioMoth-GPS-Sync firmware

An application note describing the use the AudioMoth GPS Board with the

standard firmware, is available here.

 

An application note describing the use the AudioMoth GPS Board for synchronised recordings, is available here.

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