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A great project for busy pet owners. This Twitter-Controlled pet feeder automatically dispenses food in response to activity on your Twitter account....
Unscrew 8 screws from the base of the pet feeder and carefully lift the bottom panel of the feeder open. There are some wires which permanently attac...
Remove six small screws from control pcb. One of the screws is hidden under a small pcb on top of the main pcb. Once all the screws are removed, the...
The schematic is shown above, I've also attached a fritzing document for your reference. This feeder is programmed to manually dispense food when the...
Locate the "volume" and "set" buttons on the pcb (compare with the labels on the outside of the feeder enclosure). Remove the tape and small circular...
Solder four wires to the control pcb so each of the four exposed button traces has one wire electrically connected to it.
Screw the control pcb back onto the feeder enclosure.
The protoboard will house the circuitry that allows the arduino to interface with the feeder's control pcb. This board will attach directly to the pi...
Solder two 100ohm resistors to the protoboard. One resistor should be electrically connected to the header pin for arduino digital pin 2 and the othe...
Solder one large and one small photoresistor (from the set of five) in series on the protoboard (make sure they are on the same side as the LEDs). Be...
Attach the leads from the "set" button to the protoshield so that the four resistors/photoresistors are in series between them (see notes on schematic...
Attach two tact switches to the protoboard so that each delivers 5v to the LED and current limiting resistor circuit (bypassing the need for a 5V sign...
Locate the red and black leads on the underside of the feeder battery compartment. Solder a (red) jumper wire from the red lead to the arduino Vin an...
Stack arduino, ethernet shield, and protoboard on top of each other.
Drill two holes in the feeder enclosure. The holes should be large enough to fit an ethernet cable and a usb cable through.
Plug a usb cable and an ethernet cable to the ports on the arduino and the ethernet shield. Thread cables through the holes you've just drilled in th...
Reattach bottom of enclosure using six screws. Attach food compartment and lid.
Insert 4 D batteries into feeder battery holder, and flip switch on bottom of feeder to off position for now.
This firmware will read incoming twitter data so that if you tweet "feed me!" from the username omnomnom the arduino will light up the two LEDs attach...
Connect the Ethernet shield to an Ethernet cable connected to the internet. Turn on the feeder. Set up a Twitter account and tweet the password you s...
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