Recent content by poptix

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    Dahua PoE failure rate

    They're HDW4831EM and HDW4631EM from Andy. The building doesn't have any weird equipment in it, don't seem to be lightning correlated either. I'm leaning towards the bad batch theory, I'll have to spend some time probing them to see what exactly failed.
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    Dahua PoE failure rate

    I'm seeing a relatively high failure rate (7 out of 32 cameras, so far) at a specific site installed in late 2019. Most (but not all!) of the cameras are on LR1002-1ET transmitters (Single-Port Long Reach Ethernet over Coax Extender) coupled with LR1002 (EoC Passive Converter). In both...
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    Rat Surveillance and Re-Processing Footage

    The video I linked was just meant as a sample video for use with motion.py, I've updated my post.
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    Rat Surveillance and Re-Processing Footage

    I worked up this quick example based on some of the documentation. You'll need the python modules cv2, time, pandas, sys, imutils and datetime motion.py <video.mp4> (technically, any video format cv2 supports will work, including .dav) This will display a window that highlights motion with a...
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    Rat Surveillance and Re-Processing Footage

    If you're interested in playing with some basic Python programming you can do this pretty easily in OpenCV
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    Record to 2 hard drives at once for backup.

    On Linux you would create a RAID 1 array with the primary and backup drive. You can remove it temporarily (and even mount it elsewhere), then reattach and it will resync.
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    Package thief

    From my archives. He must be a magician with how he made that package disappear.
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    Network extenders

    That's a ridiculously strong signal and way more bandwidth than you need for two cameras. It's fine.
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    Dahua mobile apps do not work under Android P

    gDMSS Pro has been updated and now works under Android P.
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    Dahua mobile apps do not work under Android P

    I'm sure they'll update their apps eventually, but for now they lose their device list upon upgrade and crash when attempting to add a device. (This include third party/OEM apps).
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    Dahua model number letters

    Page 14 of this doc. (From someone else on the forum, but I can never find it when I need it and this is the top Google result).
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    Using Dahua POE NVR extra port for IR illuminator

    I understand you wish to use POE. Does the illuminator have an Rj45 connection for POE? If so, plug it in, what's the problem? If not, you need a 802.3af to DC barrel connector. Something like this...
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    Using Dahua POE NVR extra port for IR illuminator

    The question is what does the IR illuminator need? You can buy pigtails that will do 802.3af -> 5v/12v/24v/48v (and various voltages inbetween).
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    firmware ip speed dome

    Oddly enough preset 95 did nothing on the two I bought from $random-china but I was happy to accidentally stumble across the alternate way to do it. It might also be beneficial to people using NVR software.
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    Mini PTZ v1: Firmware Discussion

    up, right, down, left, *up*
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