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  1. guykuo

    Modification SD49425XB-HNR 4MP, Add 12 Volt Microphone Power Output

    Microphone power output mod for a SD49425XB-HNR (running on POE+ power) to provide 12 volt microphone power. Much as I did for the SD49225T-HN, in Modification - SD49225T-HN Add External Microphone Power The resultant power out the DC input jack of about 25 ma powers a Microseven M7WP-MIC. The...
  2. guykuo

    Initialization Fails on Dahua PTZ SD49225T-HN. Factory reset pins?

    One of my long running, stable Dahua PTZ SD49225T-HN's (running firmware 2.800.0000000.4.R.R4.2510.9A.NR, Build Date: 2019-11-05) is acting up. It no longer recognizes my password and always brings up a Device Initialization dialog sequence when accessed. Unfortunately, despite multiple...
  3. guykuo

    Is Amazon Loryta Seller "e Secure" Andy?

    Ran into a different shop on Amazon selling Loryta camera on Amazon, but somehow I don't think this seller is Andy. Is "e Secure" also you? Otherwise, I'm staying away from this... https://www.amazon.com/gp/product/B082XX9LJ6
  4. guykuo

    Neowise on Dahua SD49225T-HN (2MP Starlight PTZ)

    Just for fun I, pointed one of my 2 MP Dahua Starlight PTZ at Neowise and Andromeda galaxy. Results were not bad with just a security camera. Comet in early morning shows up quite nicely. Andromeda galaxy was done at night. The galactic center is the bright, smudgey thing in the center...
  5. guykuo

    Turn off P2P to Dramatically Reduce WAN Access Attempts

    I thought I had all my web services turned off in my Dahua cameras. They also live in an isolated network that doesn't allow DNS lookups. Despite those restrictions, my router kept showing the cameras attempting to contact the outside world. Stats showed thousands of camera to WAN connection...
  6. guykuo

    Ubiquity EdgeRouter X - Configuring to Isolate Surveillance Networks

    Ubiquity EdgeRouter X - Configuring to Isolate Surveillance Networks (This topic began as an inquiry regarding interest. Enough desire was shown to proceed. Main content is later in this thread) Main content begins at Ubiquity EdgeRouter X - Configuring to Isolate Surveillance Networks...
  7. guykuo

    Dahuas lose custom bitrate upon reboot. Any work around?

    Anyone have a fix or work around for Dahuas losing custom bitrate setting upon rebooting? They reboot and end up with some super low bitrate values. Manually logging into every camera and correcting the settings after restarts is painful with over a dozen cameras.
  8. guykuo

    Safari 12.0 Removes NPAPI Plugin Support

    Just a warning for Safari users.... The latest Safari version 12.0 removes support for NPAPI plugins like the one for Dahua camera web interface. :banghead:
  9. guykuo

    Modification - SD49225T-HN Increase Upward Tilt Range

    Advanced Modification Disclaimer - I successfully performed this modification, but this should only be undertaken with the understanding that you may damage your camera permanently. Only those who are mechanically inclined and familiar with plastic welding/3D printing with PLA should attempt...
  10. guykuo

    Modification - SD49225T-HN Add External Microphone Power

    Advance Modification: Dahua SD49225T-HN Adding External Microphone Power Advance Modification Disclaimer - I successfully performed this modification, but this should only be undertaken with the understanding that you may damage your camera permanently. Only those who are able to cleanly solder...
  11. guykuo

    Tech Tool Supply Customer Support Thumbs Up

    Doing cable pulls for camera and other wiring projects has seen me getting all sorts of specialized equipment to make life easier. I have to give a shout out for techtoolsupply.com because they really came through when a "labor saving" device turned out to not work at all for me. I got a...
  12. guykuo

    SD1A203T-GN Mini Starlight PTZ Mod for Clear Horizontal Imaging

    The SD1A203T-GN Mini PTZ is mechanically limited to -5 degrees vertical tilt even when you increase its limit from the factory default. At -5 degrees, you start to see the camera's black horizontal housing. Even worse, objects that are near zero degrees tilt or higher are optically distorted by...
  13. guykuo

    A Low Cost Line Pulling Swivel (Wire Pulling Tip)

    As cable is pulled through a long conduit, the pull line tends to twist the cables within the conduit. You really don't want the cables to twist around each other, so professionals use a line pull swivel to release the twisting forces during the pull. The swivel is placed between the pull line...
  14. guykuo

    Is There a Plastic Film Covering Lens on DH-SD49225T-HN?

    I've gotten half a dozen of these from Andy at Empire and have always removed the plastic protective film that covers the infrared illuminators. That one outside the lens periphery is pretty obvious. I ran into a thread here warning a new Dahua PTZ owner to remove the plastic covering the LENS...
  15. guykuo

    SD49225T-HN Quickie Moon Shot

    Just for fun, I checked how well a SD49225T-HN could capture tonight's moon. Turned IR off, decreased iris size, went to electrical / color mode This is what I could get pretty quickly. Not too bad for just a surveillance PTZ...
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