Fernanda Sánchez

Strength and Area of Growth

During the engineering and design process I am very creative and open to new ideas. I have a lot to bring when it comes to creating things. I am also very persistent which helps me overcome challenges. An area I want to grow in is becoming stronger in creating circuit boards and knowing how to design very diligently.

Three things I want to commit to

Being organized and sufficient
Be descriptive
Have fun!

PCB Design

Partner: Ava

This is our PCB design. We decided on a soda bottle, but we haven't come up with a name yet. We plan to have 12 LED's in total, 3 outlining the top, 6 outlining the title/name, and 3 outlining the bottom. When designing we want to draw the name using silk screening. Our switch will be the cap and our battery will go in the back. This is a replica of a coca-cola bottle.

Collaborative PCB Design

This is Ava and I's collaborative PCB design. During this process we encountered challenges. We had a hard time getting our whole design to manufacture it. Because of this we had to start from scratch. This helped me understand how to use Eagle better and it made me more comfortable with the tools and how to use them. It strengthen my persistence and collaboration skills. In the end, we were able to finish it and we are proud of our final product.

Amplifier Design Sketches

Sketches

Phase 2 Design Drawing

My final amplifier design is based off a loteria card. Loteria is a Mexican bingo game and is a game I play frequently with my family. I plan to have blue acrylic on the front with two speakers centered. I plan on having led's on the side along the length. (drawing of tiny holes not included on the side).The sides, bottom and top will be made out of wood. I added the number 21 on the top left corner because it is my favorite number and the title of this card is "la vocina" which means speaker. (I don't think I'm going to include the music notes).

Rhino Amplifier Design

I chose the loteria card design because loteria is one of my favorite games to play with my family and is culturally important to me. I chose to create an original design that isn't a part of the loteria card deck. I decided to title it "la vocina" which means the speaker. I put 21 at the top because that is my favorite number. The little holes on the side is where I will put my led's and is the same on the other side. The shaded region of 3D design is where I will put acrylic whereas the sides, top, bottom and back will be wood. I'm excited to start constructing it.

Cardboard Prototype

By creating my prototype I realized that it was bigger than what I was expecting. I think I may have to go back into rhino to touch up a few measurements. I wouldn't change anything other than that. I like the way it is and I can't wait to begin building and assembling it.

Breadboard

Breadboarding was a really fun, but difficult process as difficulties arose, in which I had to persist and overcome challenges. There was a lot of aspects of the breadboard in order for the speakers to work. While breadboarding I learned how important it was for wires to be in specific places and why the connections are critical in the speakers to work. I also learned that the audio jack must be tightly connected on the breadboard to work. Breadboarding is a really important aspect of the design process because it gives us a view of what our amp pcb must look like. It is a good practice for us to know all of the parts, their functions, and how they work.

Python Collaborative Challenge

Ernesto and I collaborated to create this python program. We worked on challenge number 2 which was: 2) Write a program that generates 10 random numbers between 0 and 100. Can your program make a list of all the numbers that generated between 40 and 60? The numbers generated are pictured at right.

AMP PCB Design

To the right, you can see the board design and the schematic of the amp pcb board design. This is for our amplifiers in which we will put in our amplifiers. I was partnered with Atticus and we worked together to create the schematic and board design.

Microcontroller

My partner was Evan, and together we created a code in which the led's moved in a spiral and switched colors once the rotation was over. To the right our code and part of our microcontroller in action is pictured at right.

Microcontroller Part 2

My partner was Amy. We altered the code at right so we can have a star with text. The OLED screen allows for an image, text, time, or temperature to appear in the screen. Instead of a smiley face, we changed the image to a star.

Digital Project Idea

For my digital project it is going to be a stand alone and I plan on using the feather m4 and neopixels "featherwing" with a microphone. I imagine it working with different led shining based on the code I create. I plan on making it unique and colorful.

Unsoldered Circuit Board

Circuit Board - Bottle

This is Ava and I's circuit board. We decided to create a bottle with 6 LED's and added the text, "designer drink". We added lines along the side and on the top.

Soldered Amplifier Circuit

This is my finished soldered amplifier circuit. It contains all the component that enables the speaker to play music. We initially created this on a breadboard to make sure all the parts work, which is why my battery is still on the breadboard. All of these parts play a role in our speakers to work.

Enclosure Building Process

This is what I have done so far in building my amplifier. All my pieces are cut and my circuit board is complete. The next steps includes putting the pieces together and polishing my wood and acrylic. I also need to add led's which is why there are holes in my acrylic pieces. That is where the led's will be. I think it might be cool if I paint some designs on the back of my amplifier on some wood, but I'm not sure yet.

Final Amplifier

This is my final amplifier. I created a loteria card called "la vocina" which translates to "the speaker". It is based on a mexican bingo game in which I frequently play with my family. I'm really satisfied with the LED's because it matches the paint and acrylic. It took me a long time to set them up and I am really proud of the way it turned out. If i were to start over I would triple check my measurements in my rhino designs because I had to recut multiple times. This way I wouldn't waste material and set up my amplifier quickly. A lesson I am taking away is that mistakes are a part of the learning process and there are always lessons learned. I know now that I must be patient and not beat myself up when things don't go my way. I'm really happy with my final project and can't wait to use it when I get home.

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