Security-cam continuously compares the previous image and the current image. If an images changes by more than a preset threshold, the image is saved as a jpeg to the MMC card. This is a great project to leave somewhere for a long time in hopes of finding an interesting surprise.

The release version of security-cam had a bug that has since been fixed. Attached below is an updated firmware image and a replacement main.c file with the fix. The fix was committed into subversion at r503.

Setting Up Security Cam
  • You will need the following:
    • CMUcam3, with power and a serial cable
    • MMC or SD card
    • MMC/SD card reader on your PC
  • Format the Memory Card using the FAT filesystem
    • DO NOT USE FAT32 which is the Windows Default
  • Flash the security-cam.hex firmware file onto the CMUcam
  • Turn off your CMUcam3 and bring it to the area that you want to monitor
  • Insert the MMC card and turn the CMUcam3 on
    • Make sure you see the red led blink if there is motion in front of the camera

security-cam_lpc2106-cmucam3.hex - Updated security-cam hex file (262.6 kB) Anthony Rowe, 03/24/2007 11:28 am

main.c - Updated security-cam source file with rev 503 bug fix. (5.6 kB) Anthony Rowe, 03/24/2007 11:29 am