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MicroMoth (Round 9)

MicroMoth (Round 9)


Regular price $99.00 USD
Regular price $119.00 USD Sale price $99.00 USD
Discounted Sold out
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MicroMoth is the worlds smallest full-spectrum acoustic development board, based on AudioMoth and the Gecko processor range. Just like its namesake the moth, MicroMoth 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.

The MicroMoth's in this group buy are In Stock and will ship soon after you place your order! We only have a limited number of these available so get one before we sell out.


  • 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 

Some Compatible Batteries:

Important Notes

  • International Duties and Taxes are not included, you may be required to pay these before delivery.
  • Once your order is shipped you will receive an automatic email with your tracking information. 
  • uMoth HTSUS 8519.81.25.00, Country of Origin USA, ECCN EAR99


About Open Acoustic Devices

Open Acoustic Devices designs, supports, and deploys open-source acoustic hardware and software for our user community, as well as our own environmental and wildlife monitoring projects.

Their main product is AudioMoth, a low-cost, open-source acoustic monitoring device which has been used in multiple applications, including automating the search for an elusive insect species, monitoring poaching by gunshot and listening for ultrasonic bat calls.

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