©2019 Open Acoustic Devices

May 6

Any Updates on the Acrylic Case Kits?


Edited: May 6

Over a year ago Alex posted "We're going to make the parts for a laser cut acrylic case available in a couple of weeks..." and "I think Alasdair is planning to distribute them directly, rather than through GroupGets as they will be distributed as kits from the UK".


According to your latest news item you "have recently added the design files to enable users to cut their own acrylic enclosure" and construction details have also appeared. Does this mean that there is no longer any intention to supply the enclosures in kit form as was promised?


I'm sure that there would be a large demand for these kits as it is likely to be prohibitively expensive to obtain the laser-cut parts in the typically small quantities that most users will require.

I just thought I'd add to the chorus of interested parties! I'm interested in the reply before I embark on building cases from other components.

I've just had an update from Peter Prince...


"...the enclosures are still coming. We have been designing a waterproof protective case which can house the AudioMoth without limiting its recording ability. The design is complete, we are in the process of co-ordinating manufacture. We'll have more information about it soon."


AudioMoth development has been linked to two PhD projects so inevitably progress with some developments such as the case has been slower than we may have liked. We should be patient and grateful for all the effort that has been put into these devices.


The acrylic case design files are out, they can be found in the resources and the instructions under News. However, it would be more useful to put the building instructions somewhere else on the website so they are easier to find.

Also, I wanted to ask: how much is the approximate price of the enclosures (depending on order quantity)? We need to plan the budget for a large EU project.

I would hang fire on realising the "acrylic case design" until we receive further information. I mentioned the Audio Moth enclosures in a chat with Katherine Boughey after her talk at the Wales Bat Workers "Conference" (on 11th May) and she warned me that there were problems with this design and it is not the enclosure that will finally be released. She added that all of the initial batch of new enclosures had been earmarked for the NBMP "British Bat Survey" so it could be a while before any would be generally available. That's all I know - and I can't guarantee that the message hasn't been scrambled in transmission - however it would be very useful if we could have an update from the Audio Moth team about the current state of enclosure development.

@davidlee_malvern Any details on what the problems with the current design are? I've just purchased some AudioMoths and am looking into housing options.

New Posts
  • Hi all, I thought I would share my case with the community, it is a variation on a theme but it has worked well in the few tests I have done. The case is a Lock & Lock rectangular 180ml container (HPL805): http://www.reallyusefulproducts.co.uk/uk/html/onlineshop/locklock/rec_hpl805.php The inner foam housing is 2 layers of EFP30 Polyethylene closed cell foam sheets 20mm thickness. One is supporting the AudioMoth the other is cut to fit the AudioMoth inside : https://www.easyfoam.co.uk/closed-cell-polyethylene-foam.php Then over the hole drilled for the microphone I have used Buzzer Waterproof Acoustic Membranes brought on Alibaba: https://www.alibaba.com/product-detail/Buzzer-Customize-Size-Black-Waterproof-Acoustic_60812354593.html?spm=a2700.galleryofferlist.0.0.6c233527JZ969G&s=p The box remained watertight under a tap at full strength, focused directly on the acoustic membrane, so I am hoping rain at an angle won't pose too much of an issue. Only thing I am a bit nervous about is the glue holding the membrane, if it will withstand tropical humidity. I will keep everyone updated. Cheers
  • Hello! I am a phd and my focus is to record felid vocalizations in zoo enclosures. I need large number of samples and large number of species, so I was thinking to buy many audiomoth to handle in the exhibits. I just wondering if the quality of registrations can be good also in environments with strong noises such as visitors voices, zoos speaker voices, other animal vocalizations etc. what do you suggest? Any previous experiences? thank you Ros
  • Hello all. For those who are looking for some inspiration: I found a cheap yet practical shock-/waterproof case. Available in three colours (beige, black orange) in the Geek/Wish store. With some minor adaptations it’s ideal for the AudioMoth. The inner lining consists of foam in which the shape of the AudioMoth can be easily cut out. For the fixation of the membrane I was inspired by the Aurita design and used a PVC shoulder washer. After drilling a hole just above the mic I enlarged it until the washer fits tightly. Since the materials (plastic vs PVC) are difficult to glue I used butyl tape to attach the shoulder washer. The membrane, standard cling film (10 micron), is mounted on top of the washer. In order to prevent damage by the sharp edges there there is an O-ring on top. The second O-ring stretches the membrane over the first one and provides extra protection against water ingress. I also provide a silicagel packet to prevent condensation on the membrane and as extra safety in case of the membrane is compromised. It is advised to check the membrane after each battery change because the cling film degrades due to weather conditions. Also the O-rings suffer from UV-degradation after a time so be sure to check their condition as well. The box has two ‘eyelets’, very convenient to attach the box. The box costs 2€ and together with the other stuff you have an excellent enclosure for less than 5€ and 15 minutes crafting.
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