Forum Posts

davidlee_malvern
Aug 08, 2021
In Device Support
@Alex Rogers The issue of warping of AudioMoth battery holders has been going on for a long time, with several enquiries on the support forums but as yet no solution. I have the same issue with two ver 1.0.0 and two 1.1.0 AudioMoths. The older pair has now deteriorated to the extent that simply the vibration of driving to a survey dislodged the batteries in both detectors. Since my mobile phone and laptops are too old to run the Time apps I was unable to reset the clocks on the devices and, as I had programmed a night-time schedule, the survey had to be abandoned and two night's data lost. Other models of detector use similar battery holders without exhibiting this issue - eg the Anabat Express uses a 4-cell Keystone Electronics holder and the Peersonic RPA3 a 3-cell COMF holder of identical design to the Keystone unit in the AudioMoth. There would appear to be two possible explanations for the problem: 1) GroupGets is using counterfeit Keystone Electronics components of inferior quality. 2) The battery holder in the AudioMoth is being used in a manner for which it was not designed and so is not fit for purpose. This design of holder is intended to be fixed by two screws or rivets in the centre of each side of the holder, which would secure it flat against the circuit board or case of the instrument and prevent the bowing of the holder that we are experiencing. In contrast the holder is not securely fixed to the AudioMoth at all - held only by the solder pins and a single spot of hot-melt glue. I would be grateful for comments from the team before I waste time and money replacing the holders only to find that the same problem rapidly occurs. Thanks David
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davidlee_malvern
Jun 25, 2020
In Configuration Support
@Alex Rogers, @Peter Prince I've just started experimenting with Simplicity Studio and have already run into problems. I followed the instructions for downloading and installing Simplicity Studio and successfully built the Minimal AudioMoth Project and flashed the resulting binary to a device. However, when I tried to build v1.4.1 firmware, after replacing main.c with the version from AudioMoth-Firmware-Basic and adding digitalFilters.c and digitalFilters.h, the build failed with undefined references to sqrtf, csqrt, hypotf, sinf & tanf in digitalFilter.c. Is there a problem with the source code or am I doing something stupid?
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davidlee_malvern
May 05, 2020
In Device Purchase
The AudioMoth web page states: "LabMaker (Worldwide shipping from EU)" Why then is shipping to the UK quoted as $29 whilst only $19 to the US?
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davidlee_malvern
Jan 27, 2020
In Configuration Support
Every time I try to upload a new firmware over version 1.2.2 or 1.3.0, using "flash -u COMx AudioMothx.x.x.bin", the Flash utility fails at the first attempt with message "ERROR: Timed out waiting for send confirmation from AudioMoth". The device is then left in an apparently "bricked" condition, with no LED activity when connected to the PC via USB. However if the Flash procedure is repeated, after disconnecting the power, the device connects correctly as a USB serial device and the Flash utility behaves correctly and re-installs the firmware (any version). This behaviour is repeated every time I attempt to flash the firmware - ie Flash fails at the first attempt but succeeds at the second. The problem only occurs if the existing firmware is AudioMoth1.2.2 or later - when up/down-grading from AudioMoth1.2.1 or earlier Flash will always succeed at the first attempt.
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davidlee_malvern
May 06, 2019
In Configuration Support
I've just noticed that the maximum number of time periods allowed in the latest Configuration App has been reduced from 5 to 4 - defined as MAX_PERIODS = 4 in timePeriods.js. However in the latest version of the firmware (main.c) we have "#define MAX_START_STOP_PERIODS 5" . It's a small point but I'm trying to complete a Visual Basic config app that will be compatible with my XP field netbooks (I don't possess a laptop with a more recent version of Windows) and it would be helpful to know whether there is a reason to limit the number of periods to 4. Incidentally - it would be very helpful if you would add version numbers into the source code files - or at least remember to update the dates in the code when you make updates. At the moment it is quite confusing to have several versions of all the source files all with the same dates.
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davidlee_malvern
May 06, 2019
In Enclosures
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.
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davidlee_malvern
Mar 14, 2019
In Device Support
It's over a year since Andy posted: "We are still in the process of restructuring the sound triggering functionality for the current AudioMoth hardware" (Jan 15, 2018). Lack of triggering functionality remains the major disadvantage of the AudioMoth - is there likely to be a solution for this issue?
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davidlee_malvern
Oct 15, 2018
In Configuration Support
The "flash" source code from GitHub is directly compatible with 32 bit XP - provided you don't try to compile it using a Microsoft compiler as it uses C-99 extensions. I've just compiled it without any trouble on XP using gcc from the MinGW distribution . The USB driver is already available in XP - you just need the same inf file as works in Windows 7, ie EFM32-Cdc.inf. The XP build is reading the UID and firmware CRC and uploading new firmware and runs on 64-bit Windows 7 as well. The configuration software is more tricky but I've managed to edit main.c and hid.c so that usbhidtool will compile in MSVC 6 and it's now working perfectly from the command line in XP. My grasp of C is very shaky and it's a long time since I used Visual Basic so it may take me some time to produce a working user interface - although I have progressed as far as setting the AudioMoth time in either UTC or local time.
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davidlee_malvern
Sep 24, 2018
In Enclosures
Posted by Heather Wood, a PhD student studying bats at Stockholm University: www.wildlabs.net/community/thread/554 Her junction box is from a Swedish company - Rutab - but similar IP66 boxes are available from the UK (including RS Components & eBay) PS: IP66 = Dust Tight and protection against "Powerful Water Jets" - NOT immersion (that would be IPP67/68). See https://en.wikipedia.org/wiki/IP_Code
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davidlee_malvern
Sep 24, 2018
In Device Support
The projecting switch-tab on the current AudioMoth circuit boards is extremely vulnerable and easily broken. Should this occur, it is much easier to perform transplant surgery on the switch than to try to remove it from the board and solder in a new surface mounted component. The switch is held together by a simple spring clip, which is easy to remove with tweezers. Replace the broken slider assembly with a new one taken from a new switch and snap the clip back in place and the job is done. The clip has two projections on the base that engage in small holes in the circuit board to relieve stress on the solder joints so you need to tip the spring gently over the edge of the board when removing in order to avoid damage. The component is pretty small so you need either good eyesight or a strong pair of reading glasses but otherwise it's dead easy! Removal and replacement of the battery clip from the circuit board is straightforward as it is only secured by the two soldered pins and a spot of hot-melt glue on the opposite corner - you just need to take care not to damage any components when releasing the glue. I've had to repair two broken switches - the first time I replaced the entire switch and managed to rip off three of the solder pads from the board in the process, leading to a very tricky board repair before I could fit a new switch. Replacing the switch slider, as described above, was very much easier. The switch you need is a Nidec Copal CSS-1310TB - available from Farnell (order code 2854772) at £1.98 +VAT for a pack of 5 (plus a handling charge of £3.95 +VAT for orders under £20). https://uk.farnell.com/nidec-copal/css-1310tb/slide-switch-sp3t-0-1a-12vdc-smd/dp/2854772
Simple AudioMoth Switch Repair content media
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davidlee_malvern
Sep 24, 2018
In Enclosures
In another thread on this forum (Acoustic Cloth) David Martin describes a neat enclosure based on the smallest "Really Useful Box" (0.07 litre). There is likely to be some variation between AudioMoth units but the width of this box at the top is marginally narrower than the overall width - including protruding switch, USB socket and SD card - of the two AudioMoths I have here. Worse, the box narrows towards the base so there is a serious risk of breaking off the switch tab. I believe future AudioMoth boards will be modified with a cut-out to protect the switch but in the meantime you would be well advised to find a slightly larger box. I had already tried to use one of these boxes as an enclosure and only discovered this problem the hard way when the switch tab did indeed break off. Should this problem occur then it is reasonably straightforward to perform transplant surgery on the switch and replace the broken contact assembly, without having to remove the entire surface mounted switch from the board. I'll post details and a photo in another post on the Device Support forum, where it may be more obvious. Edit: Apart from breakage of the switch there is also a risk that the SD card can accidentally be released. If this occurs, not only will you lose the data but the card is likely to be ejected at great speed, and possibly lost, when the AudioMoth is removed from the box.
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davidlee_malvern
Sep 20, 2018
In Configuration Support
Plan B was to run the Configuration software on my old netbook using a portable Linux distro from a USB drive. I've tried 3 different versions: Knoppix (possibly too old), Lubuntu 16.04.3 and Puppy Linux: Slacko 6.3.0. In each case I can't get "AudioMoth-1.1.1.AppImage" to do anything. I've checked that permissions are set and created the rules file but double clicking the icon does not work and there is no Run option in the context menu. The Appimage file was on the USB stick but I also tried copying it int bin and onto the desktop without any success. Linux utilities, browser etc all run properly. Can any Linux Guru suggest a solution?
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davidlee_malvern
Sep 20, 2018
In Configuration Support
There has been a couple of recent threads espressing frustration that the configuration software will not install on Windows XP. Comments from Alex and Peter have suggested that since the executable has been built for 32 bit platforms it should work on XP. However, after dipping into the arcane morass that is GitHub, it is apparent that the current version of the compilation tools for js apps (node.js & Electron) will only support Windows 7 and later. As the release notes for the current version of AudioMothSetup state: "Increased required node.jsversion number" & "Increased required Electron version number" it is clear that it will not be possible to compile the app for XP in its current form. Since the app is not exactly complex, the question is whether it (and other AudioMoth software) could easily be modified so it could either be compiled with a legacy version of the tools or else be ported to another platform which still supports XP. For example Microsoft Visual Studio still has the option of compiling programs using the "Windows XP platform toolset"which will build applications compatible with XP as well as more recent Windows OS and I believe that there may be other "native js" platforms that can support XP. Clearly we can only expect such a request to be taken seriously if there is a significant number of AudioMoth users for whom the lack of XP support is a major problem - so please can we have a "show of hands". Personally all my field work is carried out using legacy netbooks, running XP. These are perfectly adequate for every other application I need to use in the field and having to purchase a new laptop simply in order to service a AudioMoth whilst away from home would completely destroy the cost benefit of the device!
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davidlee_malvern
Sep 20, 2018
In Configuration Support
In my opinion the new format of the Support Forums index pages is not a success and makes scanning forum topics very much more difficult. I would prefer that the previous format - simple topic list without images - is restored ASAP. Does anyone else agree?
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davidlee_malvern
Apr 07, 2018
In Device Purchase
Is there any possibility of increasing the production limit from 600 in the current round? I'm keen to try out a couple of Audio Moths as soon as possible at our trapping surveys. Regards David
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davidlee_malvern
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