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  1. Kymadn

    Dahua IP Camera to Control Garage door

    correct, I am not using an alarm on the camera. Only want to toggle the output via iDmss. Cannot find a button on iDmss which will do this. I have only been able to toggle it via web browser after logging into the camera
  2. Kymadn

    Dahua IP Camera to Control Garage door

    Hi Guys, I have a Dahua camera with 1x Alarm In and 1x Alarm Out. I wanted to wire the Alarm_Out across my garage door remote button so I can open the Garage door via the internet on iDMSS. My camera with the I/O is connected to a 4104 NVR. If I log into the camera via a web browser I can...
  3. Kymadn

    Dahua NVR iDmss connects over Cellular data but not Wi-Fi

    Turns out i actually couldn’t browse to the local ip or add it in smart pss with its static IP. I could ping it but that was all. The hdd drive is also showing as faulty. I have replaced the nvr with a new one for him now
  4. Kymadn

    Dahua NVR iDmss connects over Cellular data but not Wi-Fi

    Hi all, I have a Dahua NVR 4104 I helped installed for a friend. We added his NVR into iDmss using P2P. We were only able to connect to the cameras over cellular data. It will not work when he try's to connect on the Wi-Fi network. We have also tried adding the NVR using the local static IP...
  5. Kymadn

    dahua camera IVS schedule missing and IVS not recording

    Has anyone found a solutions for this? I also have an NVR with tripwires set up and no IVS showing in the schedule tab. I am not using smart codec and smart plan has IVS enabled for each camera. Tripwires are working and sending push notifications. I noticed Magic mentioned he had this problem...
  6. Kymadn

    Alarm Relay Sticking after motion detect

    Anyone know if you can turn off the second SMPT email alert which comes back after the alarm: Alarm Event: Motion DetectionStop Alarm Input Channel: 1 Alarm Stop Time(D/M/Y H:M:S): 15/09/2018 00:04:26 Alarm Device Name: LP1_CAM_4
  7. Kymadn

    Alarm Relay Sticking after motion detect

    Thanks mate. I really hope this solves all my problems. A 1N4001 would probably be better. I just grabbed a 1N4004 because i already have a few. I have ordered 4 new cameras so i can test this setup on the bench before i head back to the job site to fix the issues. I will let you guys know...
  8. Kymadn

    Alarm Relay Sticking after motion detect

    I believe i have come up with a solution to isolate the camera I/O's. If this works all i would need is to put a few diodes on each camera and i can use the existing wiring and relay. This should at least stop the other cameras which are commoned together from sensing a contact close from a...
  9. Kymadn

    Alarm Relay Sticking after motion detect

    Guys can we stay on topic please. I did not start this thread to chat about old oscilloscope, test equipment and CDC computers. I was hoping to put a few heads together and get some feedback from like minded techys on my project. Forget the automotive relay. Its gone and replaced with a solid...
  10. Kymadn

    Alarm Relay Sticking after motion detect

    So i was totally wrong about the camera i/o's commoned together. It definitely does not like it. First night tonight we ran the alarms in the scheduled time zone. Alerts and SMPT emails were sending out as a security guard was patrolling the area at midnight. The problem i had tonight was that...
  11. Kymadn

    Alarm Relay Sticking after motion detect

    The lack of documentation by Dahua would be my biggest criticism for their equipment. I found myself having to write some basic documents for my customers which i re-use now. Really the only way to become an expert is to buy the equipment and play with it. You really have to fiddle with it to...
  12. Kymadn

    Alarm Relay Sticking after motion detect

    interesting points. If i had a spare camera i would replicate this problem on the bench. Unfortunately i cant afford to spend to much time playing around with it on-site to solve this mystery. Maybe in the near future i can investigate further into it when i order more cameras for my client...
  13. Kymadn

    Alarm Relay Sticking after motion detect

    What i learnt from this is not to use mechanical relays for I/O's. I can say the best way to learn is to make mistakes :D
  14. Kymadn

    Alarm Relay Sticking after motion detect

    I feel ya mate. I too hate not knowing the reason why things happen. My background is actually 11 years in the radio communications industry. I studied electronics for 4 years and this had me a little baffled. I have been running my own business for the past 3 years. Point to point links and...
  15. Kymadn

    Alarm Relay Sticking after motion detect

    Thanks everyone for taking the time to share your thoughts. I am happy to say the problem has been resolved. All i needed to do was swap the automotive mechanical relay with a Solid State Relay and all was working perfectly. I now have the cameras switching the 12v psu ground to the solid state...
  16. Kymadn

    Alarm Relay Sticking after motion detect

    Great response Mate! I am on the same wave length as you. To answer your questions. I am not exactly sure how the camera operates the alarm contact (be it transistor, dry contact or what not). I do know from the camera datasheet, the alarm output is rated at 300mA @12V. Datasheet below link...
  17. Kymadn

    Alarm Relay Sticking after motion detect

    I just purchased a 12V solid state relay so i will give that a try in the next day or 2. Its rated at 20mA input and up to 2A output. Should be better then a automotive relay rated at 150mA input and 30A supply. I am only using 200mA for the siren and strobe. PCB Mount Solid State Relay 12V |...
  18. Kymadn

    Alarm Relay Sticking after motion detect

    Which side of the relay are u talking about having a resistor? Input or output. Can u please draw it on the schematic i provided. Also my statement about the I/O open circuit is because not all I/O's have a complete open circuit. You may have 5 ohms closed circuit (alarm active) and Open...
  19. Kymadn

    Alarm Relay Sticking after motion detect

    I will confirm but i believe the coil is de-energized and the relay contact is staying closed? I make this assumption based on the fact that when i turn off the 12v PSU the relay switchs off. Once i plug the 12v psu back in the relay remains off until the next alarm activates and the relay...
  20. Kymadn

    Alarm Relay Sticking after motion detect

    I don't think a resistor across the coil will help because the coil resistance is already low at 100 ohm.
  21. Kymadn

    Alarm Relay Sticking after motion detect

    Please explain what you mean by the "relay contact cannot break the siren current?"
  22. Kymadn

    Alarm Relay Sticking after motion detect

    Yes sorry the relay i have is 4 pins. So ignore the 87a contact in the schematic. That was just a relay i had available in Microsoft Visio to replicate my design. The relay contact 30 to 87 is normal open and 87a is not there. It is a standard automotive relay
  23. Kymadn

    Alarm Relay Sticking after motion detect

    It is 100% wired correctly. It is a 12v relay wired as per my schematic attached in my first post. One side of the coil is held to 12v while the other side of the coil is a switched earth through the camera I/O to the relay coil. I think it is more a problem of the open circuit resistance with...
  24. Kymadn

    Alarm Relay Sticking after motion detect

    I am not sure what the relay coil voltage is while it is not energized (i would have to check). I do know the resistance of the coil is about 100 ohm. The relay coil current is 150mA while energized which would mean the load current on the camera I/O is 150mA. The relay is a FRC1BA-2 The...
  25. Kymadn

    Alarm Relay Sticking after motion detect

    Hi Guys i have installed a point to multi point camera system using Cambium Networks wireless links. i have also installed a 12v power supply and storbe light + siren. For some reason when the camera motion detect alarm activates the relay coil stays energized and the strobe/siren stays on...
  26. Kymadn

    Ideas for Carpark CCTV with Strobe light / siren

    What Dahua camera have I/O's. I normally use the 4431EM turret camera
  27. Kymadn

    Ideas for Carpark CCTV with Strobe light / siren

    Thanks mate, that is good advice. They weren't 100% on the siren but they want either a strobe or siren. Your comment makes sense and i think a strobe light at each camera pole would work best. I have the wireless PTP network sorted. I just need ideas how to make the strobe light system work.
  28. Kymadn

    Ideas for Carpark CCTV with Strobe light / siren

    Hi Guys, Just looking for some advice. One of my clients is after a CCTV camera system at a shopping village. Basically they want to have a few cameras mounted on light poles. They will link back to the NVR via a Cambium PTP antenna. The tricky part is that they want a strobe light and siren to...
  29. Kymadn

    Changing Camera Order 4208 NVR

    Yes i have tried doing that via the web browser and even directly on the NVR with a mouse and monitor. When i try add/remove cameras they just instantly pop back in and i cant control anything. Wondering if i have old firmware with a bug?
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