Cannon/ Arduino project: *mostly the cannon project though*

The Arduino was our first project, and got us to recognize the importance and abilities to the software that could launch projectiles and create songs while doing so with a buzzer when the the cannon was going to be shot in the end. The cannon was what we spent the second half of this entire project on, and helped me personally build good relationships with new friends, let me get to know the class more, and become more acclimated with this engineering class. The cannon also taught me how to design something, and let it come straight out of design, and into reality with something tangible to put together.

Allowing the relay to turn two lights on and off at different

The Arduino was originally used to help us create a way to fire the cannons and to learn in the process of how to code and use the Arduinos for many purposes, such as reading the temperature in the vicinity of the Arduino, having timed buzzers, and having lights that go off by the press of a button.

The Arduino was tricky to get to work for the relay for the fact that the relay wouldn't stay in the breadboard, and we had difficulties to begin with because the diode was backwards for the longest time. What we were trying to get accomplished in the video above was allowing for the cannon to fire based of the relay and connecting the battery to the Arduino to allow enough power to open and close the circuit and open/close the sprinkler valve.

The relay and allowing it fire the cannon with nothing else fancy.

The photo above shows us attempting to open and close the valve a battery smaller than the one before in the video.

Our puzzel piece support that we created to control the tubes sway when the cannon shot.

Creating the Cannon: We began with creating the support for the cannon and designing the box that would eventually brace our cannon from shaking and creating errors in our shooting of tennis balls down the road.

cutting the tubes to fit the right dimensions for the cannon to fire correctily.

After cutting the tubes to the correct size, We then continue to plaster the tubes together to finish putting the cannon together and attach the sprinkle valve, and the bike valve to the cannon to finish the project. However, in this process, later down the line when we test the cannon, we figure out that our cannon has a leak and is unable to hold air properly like everyone else's cannon.

by now that we have the cannon created, we are creating cannon bases, and how to create a substantial base that is able to turn, and raise the cannon properly without us having to touch the cannon at all. We had several ideas, and nearly went with one base that Ben had come up with, however at one point when I talked to my dad, my father and I came up with the idea of a new cannon base that looked a lot more aesthetic, and operated much smoother, and cleaner than our original idea of picking up the cannon, and dropping it down into wholes.

Now, for the bases up above, the idea of these were to slide on each other and creating a single rotation axis for both of the bases. The bases rotate currently around one tube of 2" PVC pipe. The PVC pipe allows for both bases to turn and twist on one another without slipping and sliding around on one another insecurely.

The above; this was our protractor of sorts on the side of our base, allowing us to incline or decline the cannon in appropriate proportions that allow for the cannon to be at a specified degree. Creating this piece alone was tricky for us, the circles kept looking off, and in the original piece, we include lines drawn out from the biggest whole, connecting to all the small wholes. In theory, this would help us create a easier to understand protractor, however when we cut the piece out on the shop bot, the piece came out ragged, and shredded around what was actually important in the piece (it was shredded and had splinters coming off and around the wholes).

The pieces above is what created the A frame as we call it. The two longer pieces with angles are crucial to allowing the cannon to incline and decline. We created two sets of these long angled pieces to attach one either side of the base and create the longer rectangular piece and smaller square piece with the 2" whole to attach these longer angular pieces. These pieces hold the cannon together and at the same time, allow for the cannon to be pulled up and down. Once these pieces are attached to the cannons base, it allows for the cannon to be twisted and turned at appropriate degrees as well.

This is all of the pieces being prepared to be sent to the shop bot to be officially cut out.
This is our entire base cut out on the shop bot when we cut it for the first time.

unfortunately, I don't have pictures of our next cut, but we could not use these pieces because all of our wholes on the project did not fit, and our base's protractor on the side was shredding and splintering into a unusable pieces. So eventually we reshaped our wholes on the cannon base, and recreated each piece. As a bonus we got to use a more substantial wood in my opinon as well.

once we created our new pieces, we began to connect each piece, everything we designed and worked hard on creating, started to come together. My father spared me some PVC from our house in the garage, and the whole in the middle was filled by the 2" PVC to allow for a rotation axis.

Once we had all of the pieces together, and the cannon was solid, we decided it was time to create a way to turn the cannon at specified degrees. this is where messed up A LOT. We kept on trying to create the correct wholes in a correct format that would allow us to simple lift a dowel rod, turn the base easily, and replace the dowel rod into the whole again at a new angle. however, this was eventually never done correctly. we tried I believe four times until I got the correct idea, but never got the time to apply it to the cannon until recently after finishing firing the cannon.

This was our final product in the end. The decided it would be a decent idea to put in giant screws to stick into the ground and help create a support factor into the cannon and disallow for any movement to slide side to side. We also applied WD40 to help our cannon turn side to side easier and to incline and decline easier.

firing the cannon and testing our hard work. The cannon fire went very well and almost always nearly shot our targeted area. Even with a leak, it was enjoyable to fire our cannon, and aim for a targeted location.

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