Having recently got my v1.1 AM in GG round7, I'm really pleased to report that the recessed card and switch, means it fits really well in this case sized 85x58x33mm:
The width is a perfect snug fit, with small fillets of (camping mat) foam for the length in either end of lid, and also on the base.
As was used in the recent British Bat Survey 2019 SW pilot (BBS19) I have used two layers of metal mesh treated with NicWax over the Mic- https://www.inoxia.co.uk/products/mesh/sheets/500-mesh
Pros of this case:
- Small sized, but has thick plastic making it strong. For example a bit smaller and much stronger than the OBO Bettermann Junction Box (A8 75x75x36mm) used for the BBS19 survey, and also here.
- A proper waterproof compressed rubber seal, mean this is very likely to be fully waterproof case
- Not as cheap as the OBO A8, but at around £1.50 GBP its not expensive
Cons:
- Four small screens to lose in the field, and screwdriver to carry.
- AMv1.1 only., It is too narrow for a AMv1.0
Overall I think I'll use these case for AM v1.1 in damp, or less secure situations. But if it is a dry and secure site I think I'll stick with the convenience of the OBO A8 case.
Indeed Shawn, did some tests in the open and came to the same conclusion in differences of the signal strength, will try some more to try to find out how it' s caused and if it can be solved in some way and keeping the box waterproof.
Have you noticed a "clicking" sound on your recordings at lower frequencies (~5-30kHz) with the AudioMoth inside the case? See here for why I ask - https://www.openacousticdevices.info/support/main/comment/5dce2a2732c0dc00170ca837
I use same electronics enclosure with the clear lid, kept the hole for the microphone slightly bigger as the hole in the circuit board and for the moment covered it with part of waterproof band-aid (also ordered the speaker cloth). Replaced the 4 (M3-15mm) screws by hand screws and small rubber o-rings from aliexpress so I don't need any tools to open it. And I made the holes in the flanges a bit bigger so the wire of a "PAW" mini bicycle lock can slip through. It also makes it harder for others to open the box when fitted tight around a branch or so..
Finished some more cases this weekend. Attached photo shows eBay case (with solid and clear lid), and also OBO Betterman A8 cases in various Camo coverings. Interestingly the clear lid case was much easier to work on and get everything lined up nicely.
Pleased to report this case remained dry while out in the storm that flooded Ottery St.Mary yesterday. The case was on top of rocks, at about 10 degrees off horizontal, so I'm surprised the metal mesh kept the Mic. dry.