Hi Josh and all, Thanks for posting the results of your research. This is very helpful information. Have you any idea as to possible recording times using alkaline batteries? The email that I received seems to have been cut off at the end (see below).
John From: bounce-120525239-28417...@list.cornell.edu [mailto:bounce-120525239-28417...@list.cornell.edu] On Behalf Of Josh Adams Sent: May-28-16 18:01 To: NFC-l@cornell.edu Subject: Alternate NFC Recording Devices (WAS Re: [nfc-l] Migrants 5/24/16) Hello all, I've been lurking here for a couple years with the intention of eventually setting up an automated listening station with a RaspberryPi or similar cheap, low-power ARM device. Unfortunately I currently live in bad area for noise (< 1 mile away from a major freeway and directly adjacent to a major arterial road) so I haven't even bothered. Fortunately I'm about to move to a much better location and looking to hopefully set something up prior to fall migration. In the meantime, here are a few things I've learned doing research. As mentioned, you'll need some sort of way to get analog audio to a USB input. There are cheap (< $10) usb sound cards out there, but I'm assuming the inputs would likely be fairly noisy which could make it even more difficult to detect NFC's in the resulting recordings. A better option would be something like the Blue Icicle device mentioned. Other devices that look promising to me are the ART USB Dual Pre and Behringer 302USB. The later two options give you more options such as EQing, auxiliary outs, headphone outs, etc. Raspberry Pi's have been known to corrupt a microSD card if you write a lot of data (say audio files) to them frequently. I've heard the best option is to write data to a USB thumb drive. Not sure if newer RasPi's or other similar devices have this issue. This has the nice bonus of giving you the ability to swap out drives as needed if your device is not local or easy to access. There is an open source audio tool called SoX ( http://sox.sourceforge.net/ ) which is run from the command line and can do everything you'd require from an NFC recording station. I'm pretty rusty in my Linux scripting, but I'm sure it'd be fairly easy to write a script that automatically started recording at X and ended at Y. Heck, it probably wouldn't be terribly difficult to base X and Y on sunrise/sunset times for that given day. The real amazing thing would be if you _____ From: bounce-120518699-46331...@list.cornell.edu <mailto:bounce-120518699-46331...@list.cornell.edu> <bounce-120518699-46331...@list.cornell.edu <mailto:bounce-120518699-46331...@list.cornell.edu> > on behalf of Brian Wilson <br...@wildsong.biz <mailto:br...@wildsong.biz> > Sent: Wednesday, May 25, 2016 1:36 PM To: nfc-l@cornell.edu <mailto:nfc-l@cornell.edu> Subject: Re: [nfc-l] Migrants 5/24/16 Specs on the Teensy + Teensy audio card look good to me. 16 bit CD rate stereo recording 32 bit ARM processor Micro SD card slot Stripped down - no ethernet / wifi / bluetooth / video controller that you don't need (but can be added as extras) About $30 for the 2 cards http://www.prjc.com <http://www.prjc.com/> <http://www.prjc.com/> PJRC: Electronic Projects with ... - Components Available: www.prjc.com <http://www.prjc.com> Paul and Robin's Home on the Internet, offering free technical design data and on-line ordering of special electronic parts No personal experience with these but watch the tutorial video. Looks pretty easy to work with. On Wed, May 25, 2016 at 11:16 AM, Jesse Ross <jesse.r...@gmail.com <mailto:jesse.r...@gmail.com> > wrote: Hi John, The Raspberry Pi can be used for audio recording, but it does not have a microphone jack, so the sound has to come in through USB or a custom sound card such as this (which claims to support 24-bit!): http://readwrite.com/2014/03/11/raspberry-pi-wolfson-sound-card-3-ways-to-us e-it/ Raspberry Pi is not optimized for low power consumption, so if you're looking to run off of battery you might have better luck with other board-based computers which are a bit more careful about power. I've heard good things about Beaglebone. best wishes, jesse On Wed, May 25, 2016 at 10:39 AM, John Kearney <john.kear...@ns.sympatico.ca <mailto:john.kear...@ns.sympatico.ca> > wrote: Thanks Jerald. I find it very interesting to learn what other people are using for nocturnal monitoring. It often gives me new ideas. I'm curious to know if anyone has tried using the Raspberry Pi computer as a recording device and how long it could run on batteries. John From: Jerald Reb [mailto:jrebel...@gmail.com <mailto:jrebel...@gmail.com> ] Sent: May-25-16 13:20 To: John Kearney <john.kear...@ns.sympatico.ca <mailto:john.kear...@ns.sympatico.ca> > Cc: nfc-l@cornell.edu <mailto:nfc-l@cornell.edu> Subject: Re: [nfc-l] Migrants 5/24/16 Hi John, I'm in Delaware, I meant to include that and forgot. Yes, I record overnight, and I save calls that I hear live. I'm using a mic that I built loosely following the plans on the Oldbird website, and a preamp that I bought from Amazon. For recording I use Raven lite while listening live, but I record overnight with audacity and the oldbird detectors. Jerald On May 25, 2016, at 11:48 AM, John Kearney <john.kear...@ns.sympatico.ca <mailto:john.kear...@ns.sympatico.ca> > wrote: Hi Jerald, An impressive list! Have you told us where you are located? Are you recording and if so, what kind of equipment are you using? John From: bounce-120517698-28417...@list.cornell.edu <mailto:bounce-120517698-28417...@list.cornell.edu> [mailto:bounce-120517698-28417...@list.cornell.edu] On Behalf Of Jerald Sent: May-25-16 12:38 To: nfc-l <NFC-l@cornell.edu <mailto:NFC-l@cornell.edu> > Subject: [nfc-l] Migrants 5/24/16 Hello all, Last night was great for migration, and I had the following species fly over: Shorebird Sp. (NFC 2) YBCU (NFC 1) SWTH (NFC 76) VEER (NFC 13) WOTH (NFC 1) AMRE (NFC 12) CAWA (NFC 1) Warbler Sp. (NFC 57; many zeeps) BOBO (NFC 2) I also had two possible Cape May Warblers. Jerald -- Jerald -- NFC-L List Info: <http://www.northeastbirding.com/NFC_WELCOME> Welcome and Basics <http://www.northeastbirding.com/NFC_RULES> Rules and Information <http://www.northeastbirding.com/NFC-L_SubscribeConfigurationLeave.htm> Subscribe, Configuration and Leave Archives: <http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html> The Mail Archive <http://www.surfbirds.com/birdingmail/Group/NFC-L> Surfbirds <http://birdingonthe.net/mailinglists/NFCL.html> BirdingOnThe.Net Please submit your observations to eBird <http://ebird.org/content/ebird/> ! -- -- NFC-L List Info: <http://www.northeastbirding.com/NFC_WELCOME> Welcome and Basics <http://www.northeastbirding.com/NFC_RULES> Rules and Information <http://www.northeastbirding.com/NFC-L_SubscribeConfigurationLeave.htm> Subscribe, Configuration and Leave Archives: <http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html> The Mail Archive <http://www.surfbirds.com/birdingmail/Group/NFC-L> Surfbirds <http://birdingonthe.net/mailinglists/NFCL.html> BirdingOnThe.Net Please submit your observations to eBird <http://ebird.org/content/ebird/> ! -- -- NFC-L List Info: <http://www.northeastbirding.com/NFC_WELCOME> Welcome and Basics <http://www.northeastbirding.com/NFC_RULES> Rules and Information <http://www.northeastbirding.com/NFC-L_SubscribeConfigurationLeave.htm> Subscribe, Configuration and Leave Archives: <http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html> The Mail Archive <http://www.surfbirds.com/birdingmail/Group/NFC-L> Surfbirds <http://birdingonthe.net/mailinglists/NFCL.html> BirdingOnThe.Net Please submit your observations to eBird <http://ebird.org/content/ebird/> ! -- -- NFC-L List Info: <http://www.northeastbirding.com/NFC_WELCOME> Welcome and Basics <http://www.northeastbirding.com/NFC_RULES> Rules and Information <http://www.northeastbirding.com/NFC-L_SubscribeConfigurationLeave.htm> Subscribe, Configuration and Leave Archives: <http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html> The Mail Archive <http://www.surfbirds.com/birdingmail/Group/NFC-L> Surfbirds <http://birdingonthe.net/mailinglists/NFCL.html> BirdingOnThe.Net Please submit your observations to eBird <http://ebird.org/content/ebird/> ! -- -- Brian Wilson, GISP Wildsong 707-827-0001 -- NFC-L List Info: <http://www.northeastbirding.com/NFC_WELCOME> Welcome and Basics <http://www.northeastbirding.com/NFC_RULES> Rules and Information <http://www.northeastbirding.com/NFC-L_SubscribeConfigurationLeave.htm> Subscribe, Configuration and Leave Archives: <http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html> The Mail Archive <http://www.surfbirds.com/birdingmail/Group/NFC-L> Surfbirds <http://birdingonthe.net/mailinglists/NFCL.html> BirdingOnThe.Net Please submit your observations to eBird <http://ebird.org/content/ebird/> ! -- -- NFC-L List Info: <http://www.northeastbirding.com/NFC_WELCOME> Welcome and Basics <http://www.northeastbirding.com/NFC_RULES> Rules and Information <http://www.northeastbirding.com/NFC-L_SubscribeConfigurationLeave.htm> Subscribe, Configuration and Leave Archives: <http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html> The Mail Archive <http://www.surfbirds.com/birdingmail/Group/NFC-L> Surfbirds <http://birdingonthe.net/mailinglists/NFCL.html> BirdingOnThe.Net Please submit your observations to eBird <http://ebird.org/content/ebird/> ! -- -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
