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Raspberry Pi As Low-cost HD Surveillance Camera
Raspberry Pi Class
DIY Yellow Jacket Bottle Trap
You would want to be careful about what bait you use, pop might attract honey bees or other helpful/endangered insects. I would imagine 2-buck-chuck from Trader Joes would work just fine and target mostly/only yellow jackets.
Raspberry Pi Torrent, Samba and DLNA with 3+ hard drives
Raspberry Pi Media Server - MiniDLNA
Raspberry Pi Universal Remote
OpenHAB on Raspberry Pi