[Automatic Dog Treat catapult]

For this project, I plan to create a dog treat catapult that can be manually controlled or automated (provided that my dog is well behaved). Manual control is available either through a Wii Nunchuck connected to the catapult, or through a Termite terminal connected via Bluetooth. An ultrasonic sensor at the front of the catapult detects when the dog approaches, and launches a treat when she's within a set distance. This function can also be toggled on and off via the Nunchuck or Termite terminal. Two servo motors are used in the firing of the catapult. One motor, positioned behind the arm, will hold the arm in place, and rotate out of the way to release the arm. The second motor, positioned toward the front of the assembly, will rotate to tension the spring attached to the arm. The catapult will be able to automatically fire and reset the firing mechanism.