Alex, Thanks for the prompt and fulsome response. I've downloaded the 'SetupSTM32CubeProgrammer-2.8.0' but it doesn't want to run on the Mac, so I'll try the W'doze version :( Looking for an edge connector to avoid soldering pins on the Moth pads. Cheers Greg PS: Interesting if it was such a simple thing, that it was trying to write to SD, but as no card, stuck, and then I compounded the problem. Might be worth adding to a FAQ.

Hi Team, One of my Moths (1.0.0) had this 'No Audiomoth Found' by Config with 'red on & green flashing, no response to switch' problem. Numerous other Moths work fine on this OSX setup. I've taken the clip & slider out of the switch, but still the same behaviour. Paperclip at power on got it recognised, so installed 1.6.0, but it still disappears after reboot, although OSX could still 'see' it in System Report. Next move was fatal - I ticked 'Overwrite bootloader'. Now nothing. Oops! - I see elsewhere in the forum, Alex generously offering to rewrite it if mailed back to him. However, should the ST-Link V2 for STM32 be able to rewrite, it, I'm keen to try. I would need directions though; the file and the pinouts of the port. Otherwise, Alex might be kind enough to email me the address to mail it to. Sorry to have been impulsive... (but the warning might be made even more expliicit!) Regards Greg

There must be hundreds of Audio Moths in the wild now, and perhaps there are alternative versions of the code in use, but not a word of it on this forum! Is there another forum we should be participating in? My Moths are collecting dust waiting for me to learn a LOT more about programming for signal detection, without ANY examples to work from... It's a year and a half since the code used in the New Forest Cicada project was to be released 'very soon now'. I appreciate that research priorities are obviously elsewhere, and we're all under the pump, but isn't it time that the raw code, warts'n'all was released so those of us who really need this? The Open Source community doesn't sit on code, there's a community of enthusiasts out here keen to understand and improve it. (Apologies for the tone, but I'd REALLY like to get on with this. If anyone has suggestions for how we might create a crowd-sourced & funded alternative firmware, I'm in.)

In the interests of assisting the development of the detection algorithms, I submit several URLs to the calls of the Rufous Scrub-bird Atrichornis rufescens, a species of significance in the rainforests of Eastern Australia. https://www.hbw.com/ibc/species/57581/sounds & https://www.xeno-canto.org/species/Atrichornis-rufescens It appears that the fundamental of these calls may be anywhere between 2-6KHz. From the support forum it is clear that many of us are keen to implement recording triggers, and more than a few are ready to experiment with them in code. Perhaps the authors would refer us to literature describing the approaches taken, and share snippets of the code used in the New Forest Cicada project for us to experiment with.

Membranes: Reading the critique of the MEMS microphone (admittedly written by the makers of the competitor piezo design), it may be inviting trouble to operate them without a waterproofing membrane. Might an inflated ziplock bag with an packet of dessicant make a suitable inner container? Purists might even like to pop an oxygen-absorber packet in as well. An easy way to get (very close to) a dry Nitrogen fill). It will be very interesting to characterise the response of the AudioMoth with swept frequency and transient impulses, in various types of enclosure and membrane. Enclosures: As 'total waterproofing is near-impossible (for those of us without serious engineering shops)', I'm presently inclined to separate the mechanical protection and mounting, from the moisture ingress function (above). Perhaps use a standard electrical enclosure, or that hardy standby, plastic plumbing. I'll be keeping the size quite small to avoid unwanted echo & resonance, especially at the highest frequencies, and may insert some acoustic absorbent foam. For the aperture, we have a product in Australia called 'Termi-Mesh', a lightweight woven stainless-steel fine mesh, that I have fused to plastic pipe for other projects. Pensively waiting for the Group-Gets announcement ... Greg Hall

In my experience, it's all but impossible to keep condensing moisture out of equipment, especially in tropical forests. Better to provide very good protection against rain and splashes, and a generous area of finely-screened ventilation below, so the inevitable accumulation of dew can be evaporated away when the day warms up. Probably needless to say, the PCB must be well lacquered, and all external contacts well lubricated to displace corrosion-causing moisture and electrolysis. (I like lanoline-containing sprays, they are slow to evaporate) The area of (stainless-steel) wire mesh will also provide an ample area for the ambient sounds to get to the microphone, rather than depending on a tiny hole with an occluding membrane. The microphone specified for 'our' device on page 6 of http://datasheet.octopart.com/SPM0408LE5H-TB-Knowles-Acoustics-datasheet-14433657.pdf is a bit vague about environmental tolerance, although page 3 of http://datasheet.octopart.com/SPM0408LE5H-TB-Knowles-Acoustics-datasheet-10100519.pdf shows it to be a tough little beast. Incidentally, it seems to be only specified up to 10kHz. The ultrasonic sensor on page 3 of the first catalogue is charted up to 100kHz, but its response does change quite a bit over that range. It would be very helpful to see a sweep plotted up to 250kHz. All that said, I like hundreds of others, are champing at the bit to get experimenting with our AudioMoths! Regards Greg Hall PS: These piezoelectric microphones may be worth paying attention to: http://www.tomshardware.com/news/vesper-vm101-piezoelectric-mems-microphone,29187.html & http://www.edn.com/design/analog/4457396/3/SmartEverything-and-the-rise-of-the-microphone-array