One of the last races during the 22nd Annual Northern California International Dragon Boat Festival at Lake Merritt, Oakland, California.
Updating the Raspberry Pi Webcam
Update (January 25, 2021) My Raspberry Pi powered webcam is now showing the Jordan Park Neighborhood in San Francisco, California. The Raspberry Pi Model B, Rev 2 is using the Raspberry Pi High Quality Camera (with the Raspberry Pi HQ Camera Lens – 6mm Wide Angle) and is running Motion (pi_buster_motion_4.3.2-1_armhf). Details to follow.
(Original post) I built a streaming webcam showing the view from my downtown Oakland apartment in November 2012. I used a Raspberry Pi (Model B Revision 1.0) and the Raspian Wheezy (2012-10-28) image. For the webcam/web server software, I used MJPG-streamer. The problem with MJPG-streamer is that if the images/stream is available on the internet, then anyone can access the software.
Recently my Raspberry Pi began to lose the WiFi connection. In researching various solutions, I disabled WiFi power management on the Edimax EW-7811Un nano-size USB WiFi adapter. That didn’t solve the problem. I switched to Ethernet but the connection still dropped.
I found a nice script for “Rebooting the Raspberry Pi when it loses wireless connection“. It’s a script that runs in crontab and checks for a network connection by pinging a local address. If the ping fails, it restarts wlan0.
The checkwifi.sh script worked great, but then I had an issue with the video stream image oscillating. The image would continually go between light and dark and the only way to stop it was to restart MJPG-streamer.
I decided to update to the current Raspbian Jessie with Pixel and some other webcam software. The Motion-Project seemed not to difficult – I could use it as a streaming webcam. I decided to use Motion 4.0 and Kenneth Lavrsen’s Motion 4.0 Guide to help set it up. I don’t know if the image oscillation is an issue caused by using the Creative Live! Cam Chat HD (auto exposure?) but this current setup seems to have resolved the issue.
Lake Merritt, Oakland, California
Lake Merritt, Oakland, California.