Blender Defender - Keeping cats off kitchen counters

MAKE: Blog: Blender Defender - Keeping cats off kitchen counters: "I have a problem with my cat jumping up on the counter and eating my plant up there, so I pointed a network camera at it and ran some motion detection software. As soon as my computer detects motion on the counter, it sends a signal to turn on an extremely loud blender and a strobe light, scaring the cat off the counter."