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AudioMoth (Round 4)

AudioMoth (Round 4)


125% Funded
125% Funded
35 Backers
200 Unit Target
Ended 1 Year Ago

+ shipping

250 reserved of 200 Minimum
Limited quantity of 250 Available!

Product Details

Open Acoustic Devices
Product Description

AudioMoth is a low-cost, full-spectrum acoustic logger, based on the Silicon Labs Gecko processor range. Just like its namesake, AudioMoth can listen for sound from audible frequencies, well into ultrasonic frequencies. It is capable of recording uncompressed audio to micro SD card at up to 384,000 samples per second.

  • 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
  • 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

AudioMoth is an output from a research project at the University of Southampton and the University of Oxford to develop low-cost acoustic sensors for environmental and biodiversity monitoring. The hardware design, and all associated software, is open-source and freely available. Note that AudioMoth is a prototype research tool, and is not a commercial product. As such, it comes with no warranty or guarantee that it is fit for purpose.

For more information about the AudioMoth 1.0.0 and device support, please visit the Open Acoustic Devices website.

AudioMoth Board

Why GroupGet?

This Group Buy was created by Alasdair Davies of the Arribada Initiative in response to requests from a large number of individuals all wishing to individually acquire an AudioMoth device. The individual price of devices from CircuitHub varies with their current component stock levels and the number of devices ordered. We have chosen a fixed price to cover this variation in cost and to support users. This cost does not include taxes and duties. This margin will be used to purchase additional AudioMoth devices to be held in a common spares pool and to provide trial devices to interested parties. The Arribada Initiative actively supports both the conservation community and the developers of conservation technology, and is exploring how open tools can help the developers of conservation technologies to distribute, support and maintain the devices they design into the future.

Purchase Information

Unit Deliverable
An AudioMoth device (batteries, SD card, USB cable and case not included)
Unit Price
Campaign Part #
Campaign funded, scheduled end date: Sat, 05 May 2018 01:10:51 -0700
Factory Lead Time

8 weeks Days

Shipping Details
GroupGets will handle the shipment of orders for this product.

Options and Add-Ons

SanDisk Extreme® microSDHC™ UHS-I w/adapter- 32GB


Image of SD Card

USB A to Micro B Charge & Sync Cable


300.0 mm (0.98') Micro USB Cable, black

10 x 1 Mil Transparent Clear Zipper Self Seal Zip Lock Polyethylene Plastic Bags


Ten basic plastic bags to cover the AudioMoth during deployment.

How it works

This is a group buy campaign that needs to acquire at least the stated minimum amount of pledges from backers like you before the Unit Deliverable and any Add-Ons ship. We do not charge anyone until the Progress above hits 100% or greater, otherwise there is no charge. All campaign products are vetted as existing and functional so your order will be fulfilled within the Factory Lead Time if the campaign succeeds. Please see our FAQ page for more details on our billing process.

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    Kim Leyland

    Hi, shipping to UK is now coming up as around $50, is this correct?

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    I just ordered 5 of these awesome devices. It would be great if I can get them before June 16th, before my fieldwork with lesser horseshoe bats starts. :-)

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    Tim Bailey


    Is there an option for shipping from the UK for low numbers of units, as per the previous rounds?

    Thanks, Tim

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    David Martin

    Do these have the same shipping rates as the previous rounds? I could only see the more expensive individual rates.

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    Hi.. Is there a reason why shipping rates are more expensive than previous rounds?

  • Bsfhk5ll normal

    @David, @r.kwafo2 - There should be an $11 freight forwarding option if shipping to the UK. I've contacting GroupGets to add this to any existing orders in this round if it wasn't available.

  • Bsfhk5ll normal

    @thomas - Thanks, we are due to confirm stock and delivery dates once we have an update on component availability this week from CircuitHub. Both Round 3 and 4 are due to be manufactuered when the new stock arrives shortly, then we'll know the best ETA for delivery in your hands.

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    David Martin

    I have some ordered in each of rounds 3 &4. Happy for postage/packing to be combined when shipping them.
    Now back to making the cases waterproof :)

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    I didn't see the $11 shipping option to the UK either. Cheapest option was $47.98.

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    Tried to purchase in both rounds 3 and 4, no luck, wow super popular.
    Please open more slots...thanks

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    So excited to get these! If there is a cheaper shipping option to the UK, than showed up originally that would be great.

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    I just drove out of the field to get signal early this morning and found this was already completely sold out which is incredible. It’s amazing to see how much demand there is when the price of the unit is not hundreds of dollars. I had needed these for fieldwork in July so I am stuck now as to what the options might be. I know you have worked really hard to put up this fourth-round, but he said it is at all possible to help me with 14 recorders to match with camera traps in a study that begins in July that would be incredible helpful.

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    In the time it took me to get approval for purchasing 25 of these devices, they had sold out. Would very much appreciate another opportunity to purchase asap for projects starting this summer in the UK.

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    Are these gone already? I've been getting a "limit reached (250)" message since the first day (4/30).

  • 9zi7mnmg normal

    We have adjusted all UK and EU orders to the correct shipping cost, sorry for the confusion.

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    David Martin

    anne.harrison (and others). If you are wanting significant numbers then why not organise your own production run. The schematics etc are open source and I'm sure there are UK companies who would build them. Obviously the more items, the cheaper the build so it may be possible to find collaborators to work with to get the numbers up.

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    @David Martin, or anyone else who has already worked with these recorders: We have ordered for the first time these devices and you seam quiet experienced already. Would you be willing to share your experience in setting them up in waterproofed cases? What cases do you use? How does it affect the sensitivity of devices?
    Thanks in advance

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    David Martin

    As a follow up, I've not actually used them but folk like may be happy to give you a price. Obviously you then have to manage all the different groups yourself rather than having the benefits of GroupGets infrastructure, but with a few folk wanting many tens or hundreds each it would be a credible alternative.

  • 9zi7mnmg normal

    @David Martin you are correct, anybody is free to take the open source design files and fund their own production run if they have critical needs. The OpenAcoustics team is working hard to change parts that are biting us with limited supply and a solution is near. On the flip side, units bought from these campaigns fund the developers to add new features and improve the design.