In home wireless cameras for less than $100 part 2
Posted by robkraft on August 27, 2011
My wife and I liked this camera so much that we bought a second camera. Configuring the router to allow a second
camera is a little more complicated, so I thought I’d share my experience here.
- I discovered a camera feature I did not know about once I bought my second camera. The camera has a physical focusing lens on the front of the camera, you can spin the camera cover to improve the focus; so make sure you take a moment to do that to improve the image quality.
- With two cameras taking images based on motion detectors I decided I wanted to put the images from the second camera in a different folder on my FTP site. This was easy to do, but I discovered that the path to my FTP site is limited to just 32 characters. This is probably sufficient for most people.
- By default, your camera uses Port 80 to connect to the Internet, but if you are viewing two cameras from the Internet, they both cannot use Port 80. You also cannot use a DMZ feature in your router that passes all traffic from the Internet to a single device. Instead, you need to configure filters to tell your router to pass traffic coming in on one port (80) to one camera; and tell your router to pass traffic coming in on another port (I used 81) to the other camera. Internally, I statically assigned 192.168.0.30 to one of my cameras, and 192.168.0.31 to the other. Therefore, I configured Port 80 on my router/firewall to send traffic to 192.168.0.30; and I configured Port 81 on my router/firewall to send traffic to 192.168.0.31. When we use the Internet to connect most any device, the Internet uses Port 80 by default; which means that we don’t need to type in the port number when we go to a web site like http://www.yahoo.com:80. The same is true for your camera. But since the second camera is listening on a different port (81 in my case), I need to enter the Port number on my URL when trying to view the camera from a web page or configuring it for viewing from my phone. I simply enter http://xx.xx.xx.xx:81 and when the request from the Internet hits my home address of xx.xx.xx.xx, my home router will direct the request on Port 81 to the device at 192.168.0.31 as I configured it above.
- In my original blog post I had created an “Event config – schedule profile” that I used on my motion detector. This is unnecessary for me because there is an “always” option you can choose in the “Event config – Motion Detect” configuration; which is what I desired anyway.
- If you do create an “Event config – schedule profile”, you must give it a name first, and then you must click on it to select it before the options for configuring your profile will appear.