Bird feeder components
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CategoryPartPriceComments
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ElectronicsRaspberry Pi Model A+25Other models would work, too, but this one is the cheapest.
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RPi Camera25
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SD card or microSD card10The newer Pi models (A+, B+) use microSD cards, older ones use SD cards.
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USB charger6
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WiFi dongle (Edimax EW-7811Un)9Necessary if you're using the cheaper A or A+ models, which have no ethernet jack.
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IR LED1http://www.adafruit.com/products/387
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IR demodulator2http://www.adafruit.com/product/157
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PN2222A transistor2Price of a ten-pack ( http://www.adafruit.com/product/756 )
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Resistors1
I think you can get individual ones at Radioshack. Or buy a set of 400 (!) at Amazon for $10.
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Ribbon cable3http://www.adafruit.com/products/862
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Heat shrink3http://www.adafruit.com/products/344
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Lumber2 ft x 4 ft of 1/4" thick plywood12
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HardwareEight M2.5 12.0 mm screws4For mounting the Pi in the enclosure and screwing the side panel.
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Four M2.5 6.0 mm screws2
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Four M2.5 x 10 mm HEX standoffs2
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Hardware cloth9This buys a 2 x 5 feet roll. You need much less
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Hinge2For accessing the seed compartment.
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WeatherproofingHelmsman Spar Urethane17Protects the plywood surface and makes it watertight.
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Silicone caulk5Seals panel joints
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OtherOptics (glasses)10Cost of a pair of reading glasses. One lens left over!
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Electronics87
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Lumber12
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Hardware19
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Weatherproofing22
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Other10
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Grand Total150
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