So, if we haven't been contacted, means no award, right:)?

Good question, I'd like to know the answer as well.  I'm inclined to think that it does mean what you say, but I could be wrong and it's still a couple of weeks away till March :)

To clarify. The answer could affect plans I have for the short term. However,  I can also understand a decision that wants to hold the tension right up to the announcement 😀 For myself I’d guess that it’s 99.9999% likely that it’s like you say. I really couldn’t imagine it being any other way.

Beware that the AudioMoth in itself will drift. It can be hooked up with a GPS to allow for GPS time synchronization, though.

https://www.openacousticdevices.info/gps-sync

Unless you are planning on making a mesh network between nodes then the total distance spanning the location of all the nodes is important to know, not just the intra node distance.

If you have a Raspberry Pi as a main master node then you could install my sbts-aru project as a base project and you would get a sub-microsecond master time base by default as well as the GPS synchronizes the main system time with typically less than 0.1 microsecond, and SD card corruption resilience due to the in-memory overlayFS architecture.

If the total distance was 20m across all nodes, then the approach above could also combined the audio gathering capability as the sbts-aru project does audio logging as it would be within 20m of an audiomoth anyway, then you also have time-synchonized audio. If the distance is spanning 100m for example and it's just the intranode distance that is 20m then everything is somewhat different with respect to synchronization.

I am sure Simon can chime in with exact specifications. I do not have it with me now. The centre distance between the attachment holes at each in end is 20mm wich will fit the standard holes in a collar from Vectronics Aerospace. 



Simon posted images of the logger attached to a collar on a spotted Hyeana here: https://twitter.com/chamaillejammes/status/1441657479612542990

To-do now done in South Africa:

☑️ Being ridiculously proud of achieving data transfer over local GSM and LoRa networks for tracker

☑️ Being ridiculously proud of the way our wehear logger fits on lions and hyaenas. Looking forward to listening to their life. pic.twitter.com/CvgvovVjOp

— Simon Chamaillé (@chamaillejammes) September 25, 2021

We are studying muskoxen which are exposed to a polar night of between 3-4 month where the sun does not come over the horizon. On the other hand it also means that it will be continously OVER the horizon during the 3-4 summer months.

We are keeping an eye out for kinetic energy harvesting and there has been some interesting progress recently:

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0285930

@M_Stanton , you provide a nice list of uses of animal borne audio. We could add environmental sounds both abiotic and biotic.

We would LOVE to use audio more for ground truthing behavioural states and we would LOVE if the audio recordings could be GPS time synced...

@jared , it sounds interesting with the mentioned increased capabilities of the Iridium system. Can you link to any references for that?

Cheers, 

Lars

I heard it through industry chatter but can't find a news release on it yet.

I doubt there is an off the shelf solution. Likely you will have to build one. Again I think the FLIR leptons could be of value here.

@krasi_georgiev  you have worked with Leptons before ? Is this something you are able to advise on ?

@mguins should share some more details on the project. IIUC she needs IR at night and not thermal images so a simple CCTV camera with some code will do the job.

Ah yes. I didn’t notice that. Indeed it’s “near infrared”, 850nm lighting.

Thanks for the update @Frank_van_der_Most . I have been curious about the AA Li-Ion/Li-Po batteries and how they perform. The sudden drop in reported voltage will likely be from the internal voltage regulator switching off when the internal cell gets to the low voltage threshold (usually around 3V) to avoid damage to the cell. Looking now at a discharge curve they show a constant 1.5V, then a step down to 1.1V before dropping to zero. I don't know how you can possibly test these externally to know how much energy they have left until you hit the 1.1V step. 

Hi Alistair @alsnothome , see the comments of @Amanda_Matthes at the post here. Basically, it is not easy