Hydromoth by Open Acoustic Devices

Description

HydroMoth is the latest product from the AudioMoth range and offers everything needed to start recording underwater sound for extended periods of time at depths of 30-60m. HydroMoth hardware is directly compatible with all AudioMoth firmware, meaning you can use the device in any number of underwater applications, from scheduled recording in coral reefs, to triggering recordings by amplitude or frequency in freshwater ponds. HydroMoth has improved LED visibility and more accurate time keeping for long deployments. It also has an in-built magnetic reed switch, which enables recordings to be started and stopped in wet conditions without opening the case. HydroMoth is sold with the AudioMoth Underwater Case as standard, with the option to add a waterproof magnetic key chain fob to make use of the magnetic reed switch.

Features

• EFM32 Gecko processor
• Capable of recording uncompressed audio to micro SD from 8k to 384k samples/second
• Records uncompressed WAV files to SD card
• Powered by 3 x AA batteries
• Analog MEMS microphone acts as contact hydrophone
• Analog pre-amplifier with adjustable gain
• Configurable USB interface
• Onboard real-time clock keeps track of time in UTC
• Improved 32.768 kHz MEMS oscillator to reduce clock drift

• Tested to a depth of 30m for 2 months
   

  Applications 

• Boat noise monitoring

• Freshwater sound surveys

• Coral reef soundscape monitorin

• Cetacean underwater acoustic studies

 
How Other Scientists, Ecologists, (& Basically Cool People) Have Used the HydroMoth:

@RobinSandfort: 20 minutes from post box to pond. Our first dedicated #hydromoth arrived. Can‘t wait for some underwater #bioacoustics. Show us your freshwater hydromoth sites! #capreolus

@and1hill: Very exciting! My first #HydroMoth recording of dolphins off the coast of Exmouth. Recorded at 250kHz and downsampled to 32kHz to improve SNR ⁦@OpenAcoustics

@900hz: #HydroMoth listening and an Egret looking in this tidal pool full of life