For the physical prototype, we wanted to make a casing that was big enough for the dogs to interact with and use while strong enough for it to stay together when being interacted with. The first few designs involved making the casing into a box shaped shell but it eventually evolved to a triangular shape with a small box bowl in the front for the treats to drop to and a small floor lever for the touch sensor. Each side of the triangle will have a speaker and an led that will play a random bird/dog sound and flash respectively, when the sound sensor detects a noise.

Initially we wanted the sound sensor to be inside the box, beside the speaker but with how the sound sensor was built and the I/O port being on the same side as the sensor, we realized it wasn't viable. So, we decided to place the sensor on top of the casing; in a kind of hooked manner.

For the treat release mechanism, we made a square tube compartment where the treats will be stored and it is currently being blocked by a stopper on a motor that will open up when the touch sensor at the front detects that its been touched and close up after a delay.

Finally, the casing was painted black since most household electronics are black or white, and a paw print was added on the touch sensor button to signify where the dog needs to touch

Some challenges we had were connecting all the wires together from the circuit board, to the breadboard, to the components since some were short and either need to be extended and the ends taped together to make sure the stay together, and some components, like the sd card player(the tiny square component connected in the breadboard) being funky when trying to work with it. We tried using the small breadboard like in the first picture but decided to opt in a bigger one when we realize that we need the extra space.

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