Mika Jagannathan

Hello Post!

Hi! My name is Mika and I use she/her pronouns. A strength in design and engineering is my work ethic and attention to detail. I make sure I am the best possible version and want that to reflect through my work. An area for growth is my coding. I want to work on problem-solving by myself before I ask my teacher.

The three things I am going to commit to for my documentation are:

Make sure there is a photo in every post
Have a thorough explanation of what is happening
Be sure that I show my gains AND struggles.

PCB Ideation

These are the ideas Riya and I came up with for our PCB. We decided to go with a clam with 8 white LEDs as the pearl and 4 yellow as the sparkles. We chose it because we thought it would be cool to see the sparkles.

Collaborative PCB

This was our final PCB design. I worked with Hannah and Riya on this project. We ended up making a clam with a pearl inside. The pearl contains 8 white LEDs and 4 white LEDs as the sparkles on the outside. Our circuit is parallel.

Speaker Ideation

My three favorite ideas that I created for my speaker were the cactus, flower pot, and sunset. I thought the cactus would be cool and fun to make. The flower pot could be multi-purposeful because I could plant real flowers, which I love, inside of it. And the sunset would be beautiful! I eventually decided to go with a combination of the first two ideas, by making a plant pot that was able to carry speakers, as well as a living cactus!

Post-It Feedback

I really appreciate that people thought my design was cool and could be interactive! I want to incorporate the idea of having two layers to the pot to put a real cactus inside. I also want to make sure I can 3D Print a large pot to hold two speakers. Lastly, I want to be able to make sure that the speakers sit flat against my walls, so asking Mr. Kleindolph will definitely help!

Phase 2 Drawing

This is my design for my phase 2 speaker. It is an amp under a cactus planter. I chose two cacti because they are fairly easy to maintain and won't die that fast. I chose the dimensions of my wood but might need more or less depending on the size of the speaker. Although it says different wood, I think I might keep it the same wood type mahogany. I am challenging my current skill set because I don't know how I am going to attach the two boxes if I even make two boxes at all. **I will ink it in

Modeled Enclosure Design

This is my speaker's 3D model. It came together really well, and there were very few things I had to tweak when putting it together. The only thing I have to change is where to put the holes for my on-off switch.

Cardboard Prototype Post

This is the cardboard cutout of my final speaker. I was able to laser-cut the entire design because it was fairly easy. The only thing I had to tweak was where to put the hole for the switch. Another thing to note is that because my design is press-fit, it will not have the little parts sticking out. The speaker screw holes thankfully matched up as well! I'm excited to see the rest of the design come to life!

cicuit and speaker working breadboard.MOV

Video of Speaker on the Breadboard

Final Circuit on the Breadboard that I made!

This project was enjoyable for me to do! I enjoyed learning how to put the speaker together, as well as how to interpret my ideas into physical things!

Amp PCB with Riya

Riya and I collaborated on our amp PCB design! Through this process, I learned how to connect a schematic to make it make sense and lay it out on a board! I learned how to accommodate an error by addressing the root of the problem, and how to add a silkscreen layer that allows us to add text onto our board!

Unsoldered Circuit Board

This is the final circuit board that Riya and I printed:

Soldered Amp Circuit

The original idea was the one I worked on with Riya, which I spent around 2 weeks soldering. Unfortunately, this didn't sound good because making our board became overly confusing and messed up the sound. I then ended up using one of the premade boards and was able to solder that in about 45 minutes, which is the second photo. Although the original idea didn't work, I am happy with how the final product looks and sounds.

Final PCB Board

I worked on this with Riya and Hannah. I'm really happy with the outcome because it was the original idea and the intended output! I think it looks super cute and was exactly what we were hoping for.

Enclosure Build Process

At this point in my project, I am definitely on track to finish. I had just finished screwing in my speakers, as well as gluing all of my pieces together. I also lined the inside of my planter with plastic so that when I water the plant, it doesn't wilt the wood. I am 95% done, the last thing I need to do is put in the plant! I also have to finish my digital project, which should be fairly easy since I already have the code.

Final Amplifier Documentation

I made a speaker that has a removable, live planter on the top of it.
I am most satisfied with how it looks. It is almost exactly how I envisioned it to look at the start of the semester. I am proud of the final outcome!
Contrary to other people, I wish I made my design a little more "different" or challenging. I finished with a lot of extra time, and I wish I could've made it a little more intriguing.
I will definitely remember how to solder because I had to redo my board when I didn't like how it sounded.
My goal for my amplifier is to use it when I go outside, or simply as decoration for my house!

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