Sebastian Galleno

Engineering Strength:

One of my strengths in the shops is that I am pretty good at soldering

Engineering Weakness:

One thing that I need to work on is my coding skills.

I want to make sure that I take high-quality photos
I want to make sure that I have accurate and in-depth descriptions of each photo
I want to have a well-organized and clear page layout.

Parallel and Series Circuits

In this photo I made a parallel circuit with a 1k resistor and 3 LEDs. A series circuit is one in which the current only takes one path, as opposed to a parallel circuit in which it goes down multiple different paths. In this example, you can see that the current goes through the wire to the positive strip, through the resistor, through all three LEDs before finally looping back to the negative strip.

Circuit Ideation

In this assignment, we ideated for our custom PCBs. Here are ten design ideas I came up with during class.

PCB Final

Over the last couple of classes, we have been creating a custom PCB. It started with the ideation that was on the last post, and then as a group we decided on one idea to pursue. My group went with a Lightning McQueen theme. We have the race car outline as the board shape and then placed the LEDs in a lightning bolt pattern. We used a parallel circuit loop so that the lightning bolt would be as bright as possible, which you can see that in our schematic in the bottom left. On the right side is the final board schematic and on the top left is what it will look like when printed.

Ideation

These are my enclosure ideas for my speaker. My favorite is the black holes, but the crab is a good backup in case the black hole is too complicated. Finally, my third choice would be the headphones as a kind of ironic humor type of thing.

Final Enclosure Sketch

This is my rough sketch for what I want my enclosure to look like as well as some rough measurements. There are still some bits and pieces to figure out in Rhino, but this is what the general layout will look like. There are also a couple optional things that I could add if I have extra time, such as the antennae and the front panelling.

3D Model

This is my final model in Rhino of what my amplifier will look like. If I have time I might go back and do extra stuff but only after I have completed all the parts seen here.

Cardboard Prototype

This is the cardboard prototype for my speaker design. Doing this prototype helped me realize that I had done my press fit (right picture) wrong and needed to fix it.

Breadboard Amplifier Circuit

This is my amplifier circuit laid out on a breadboard. It has both the speakers and the Bluetooth chip attach, however, recently, I am having problems playing sound even though the Bluetooth is working.

Amplifier PCB

These are the screenshots of my Amplifier PCB board and schematic. On the board, I added a quote "We Honor The Whale" and also my name in the bottom right corner.

Finished Personal PCB

This is the finished product of the personal PCBs that we designed with our groups earlier in the year. Ours was modeled after Lightning McQueen

Finished Amplifier Circuit

This is my fully soldered circuit board with working components. The speakers work and so does the bluetooth, which was a relief as they had not worked in my breadboard circuit.

Un-Finished Product

Unfortunately, I was out sick for the final week of school and so was not able to complete my amplifier by the end of the semester. Before going out, I was only able to finish my amplifier circuit and laser cut half of my wood pieces, meaning I still need to cut out the other half of my pieces and put together the speaker itself.

I am proud of the work that I was able to complete, but disappointed that I didn't get the opportunity to finish the whole thing. I will definitely come back next semester to finish my speaker as I had high hopes for my design. In the future, I think I would try to simplify my design a little bit, especially so that I can work through the Rhino stuff faster as that was one of my biggest obstacles.

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