Using low cost cameras =3D=3D> good call by Russell you can also use RaspberryPi or Guruplug to control low cost USB cameras. Both are running linux and are cheap. OpenCV is a great Linux FLOSS package for smart cameras. gus --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .