Re: [Wlug] linux security camera
With a few instructions do you think you can get the job done? Raspberry pi Search Results (http://www.instructables.com/howto/raspberry+pi/) Specialty/hobby (http://customdesktopsolutions.mywebcommunity.org/index.php/linux-open-source...) Al Butler From: "wlug-request@mail.wlug.org" <wlug-request@mail.wlug.org> To: wlug@mail.wlug.org Sent: Tuesday, March 1, 2016 12:00 PM Subject: Wlug Digest, Vol 149, Issue 1 ----- Forwarded Message ----- Send Wlug mailing list submissions to wlug@mail.wlug.org To subscribe or unsubscribe via the World Wide Web, visit http://mail.wlug.org/mailman/listinfo/wlug or, via email, send a message with subject or body 'help' to wlug-request@mail.wlug.org You can reach the person managing the list at wlug-owner@mail.wlug.org When replying, please edit your Subject line so it is more specific than "Re: Contents of Wlug digest..." Today's Topics: 1. linux security camera (brad) 2. Re: linux security camera (Frank Sweetser) 3. Re: linux security camera (Michael Voorhis) W - luggers, I plan to rig up a security camera for my wife’s store. Recently a drunk person stumbled in and gave the sales associate a bit of a scare, fortunately nothing happened. A company quoted $4k, which i thought was unnecessary, so linux powered i will go. I recall hearing on the list about a linux security camera potential a year ago with a PI, and a search through old list messages confirms that. The market for these PI-like devices seems to be fast moving. The PI 3 was announced recently, and the wifi option is attractive b/c less wiring is desirable. I know of other similar devices such as, beagle bones, other PIs, and ODROID (mentioned on the list). These devices are out of my domain of expertise and there are many of them. I thought the PI 3 would make for a good choice, but i thought i’d ask the list if there is anything else to consider. Price is not really an option since all these devices are so dang cheap. The camera(s) will likely fire a shot once every 20-30 second interval, so its not a continuous stream. Infrared is desirable for when the store is closed and visible light is low. Thanks, - brad A few random thoughts, based on the much larger scale surveillance system we run here: * Cameras are useless without storage. I would strongly recommend against storing the images on the Pi itself, as then someone could very easily walk off with them. Instead, check out a centralized video storage system like Zone Minder. * Think carefully about what kind of images you want - resolution, image quality, and frequency. Set up a test camera, walk around, do stuff in front of it, and see how much really gets captured. 30 seconds is a long time in between frames. With something like Zone Minder, you should also be able to set data retention and long term compression policies, giving you more flexibility. Once you have some settings you can live with, you can then translate those to actual disk sizes. * Assume wireless will stop working, because at some point it will. Wire is pretty cheap (you can get good prices on bulk wire at Monoprice), and it will more than make up for it's cost in reliability, performance, and security. This is doubly true for the 2.4GHz only wifi on the Pi3. * Are those pictures important enough to back up? Frank Sweetser fs at wpi.edu | For every problem, there is a solution that Manager of Network Operations | is simple, elegant, and wrong. Worcester Polytechnic Institute | - HL Mencken On 03/01/2016 08:39 AM, brad wrote:
W - luggers,
I plan to rig up a security camera for my wife’s store. Recently a drunk person stumbled in and gave the sales associate a bit of a scare, fortunately nothing happened.
A company quoted $4k, which i thought was unnecessary, so linux powered i will go. I recall hearing on the list about a linux security camera potential a year ago with a PI, and a search through old list messages confirms that. The market for these PI-like devices seems to be fast moving. The PI 3 was announced recently, and the wifi option is attractive b/c less wiring is desirable. I know of other similar devices such as, beagle bones, other PIs, and ODROID (mentioned on the list). These devices are out of my domain of expertise and there are many of them. I thought the PI 3 would make for a good choice, but i thought i’d ask the list if there is anything else to consider.
Price is not really an option since all these devices are so dang cheap. The camera(s) will likely fire a shot once every 20-30 second interval, so its not a continuous stream. Infrared is desirable for when the store is closed and visible light is low.
Thanks, - brad
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On 03/01/2016 09:20, Frank Sweetser wrote:
* Assume wireless will stop working, because at some point it will. Wire is pretty cheap (you can get good prices on bulk wire at Monoprice), and it will more than make up for it's cost in reliability, performance, and security.
At some point you may decide that one shot every 20/30s isn't enough, so having a fast reliable network will become more and more important, as you add cameras and start increasing frame-rates. Depending on the size of picture you want to store (once again think about Frank's other list items -- image resolution & quality) you can saturate a low throughput network. If you're doing multiple cameras, or having multiple pictures coming into the server per second, post-processing of the images on the server end, you will end up with a CPU bottleneck. Look at the low-light performance of your cameras also. You don't want to record a blur ... you want a useful picture of a person that you can show to the authorities. Make sure the target area is well-lit. --MCV. _______________________________________________ Wlug mailing list Wlug@mail.wlug.org http://mail.wlug.org/mailman/listinfo/wlug
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Aljerin Butler,Jr.