Greta Samaha A&D 2023

Hello Post!

A design/engineering strength and area for growth...

A strength that I have in design/engineering is my ability to be creative and innovative with my ideas and designs
While the is beneficial, and area for growth is that I don't always consider how I will plan for my design to realistically function as well as the obstacles that I will have to overcome in the process of building it

3 things I want to commit to in the documentation of my learning and projects...

I want to ensure that I am taking clear and informative photos throughout the entire process of my projects. This includes taking photos during all the stages of creating my projects.
Next, I want to organize my Google site page in a way that allows all the information to be clear by creating headings in between each different stage of the process.
Lastly, I want to make sure that all photos on my Google site include descriptions of what is happening in the photo so that my viewer isn't confused.

PCB Designs

My top design that I came up with is number 3 which depicts an island with a palm tree and waves. There will be blue LEDs that will go on the waves, yellow LEDs on the sand, and green LEDs on the palm tree leaves.

Collaborative PCB design: Greta & Siena

These are screenshots of our schematic file and board layout in Eagle. We decided to make a parallel circuit (for maximum brightness) and our design is the shape of a Christmas tree. In order to do this we will use different colored LEDs to make Christmas lights on the tree/the star. One thing I will remember about printed circuit board design is that it is important to go back and check for errors to ensure the autorouting worked.

Speaker Ideation

Design Feedback - 9/12/23

I really appreciate all of the valuable feedback I got on my designs/ideas. One thing that was consistent throughout a lot of the feedback I received was that many of my classmates noticed that many of my designs were pretty complex and detailed. I have to consider, given the time constraint, how I will be able to successfully achieve my designs.

Design Documentation

Amplifier Design Feedback

So far, I have completed most of my 3D design in rhino. I still need to laser cut the pieces for my prototype.

2. I could improve my plan on how I will fit the pieces together and add tabs to make it easier to that I don't have to use glue which may show through the acrylic.

3. I'm not sure how the sound quality will be if I put the speakers directly next to each versus on either side of the car. I also don't yet know how I will be attaching the speakers to the car (maybe glue?).

Enclosure Design Documentation

I have made the decision to use L brackets to join the different pieces of acrylic and wood together instead of cutting tabs. I think that this way, my ampliphier will be more sturdy and also look very finished. I've also decided to put the speakers directly next to each other so it is more aesthetically pleasing.

Speaker Prototype

This is the design for my car speaker. I will make my car out of acrylic and walnut wood. The 2 open gaps will be where i attach both of the speakers for the wheels of the car. Since my original rhino design, not much has changed in my recent prototype. I have learned from making my prototype that making sure each piece is prescicely measured is very important so that they all fit. I still need to consider how I will attach the speakers to the car. I'm going go attach the volume dial at the back of the car (tailpipe). In order for the speakers to not be directly on the table and vibrate, I'm going to attach a peice of wood under the wheels (speakers).

Amplifier Collaborative PCB

PCB DESIGN PCB SCHEMATIC

10 Things I did:

I routed the audio jack to the resistors 1, 2, 3, & 4
I renamed the PCB with mine and Mateus's initials
I routed the receptor to vin
I routed the ferrite beats to the speakers
I routed the audio jack to the capacitors
I routed the capacitors to the ferrite beats.
I routed the audio jack to ground
I checked for errors
I routed the power jack to ground
I routed the voltage regulator to ground

Breadboard

Inez & Greta: 1- Analog and Digital Programming Intro Activities -1

https://docs.google.com/document/d/1jEm_qrrh2NYThBxkXgLMHS23EtHH9sFTrcSEApQ0tk0/edit

Greta & Inez - 2 - Analog and Digital Programming Intro Activities - 2

https://docs.google.com/document/d/1IeObN43xftPbyIqNtBOFJ1UoaO6AgkkkYiY5VW7Lb10/edit

Microcontroller Documentation

One challenge I solved with my microcontroller was that I tried to code it to make a car honk sound which I didn't end up finishing, however I successfully downloaded the audio from freesound.org onto my computer.

(I didn't have my code saved)

Microcontroller Documentation 2

A challenge I solved was finding the code that I had to download for my microcontroller on python.

Digital Project Description

For my digital project, I will be coding my car to make a honk sound when I turn it on and off.

Sketch:

Amp PCB Documentation

Here is a picture of my fully soldered amp PCB.

Lit PCB Project Documentation

Here is a photo of the completed PBC Christmas tree that I made with Sienna.

Amp Build WIP

Here are some photos of my speaker progress so far. I still need to attach the 5 other wood pieces to the car as well as finish my digital project. Lastly, I need to find a way to attach the PCB and all the wires to the car.

Digital Project Documentation 12/20/23

https://gist.github.com/gretasamaha20/1e55df80ff7201ccd165937e4ec890c4

My goal was to make my circuit playground light up different colors.

Something I learned during this process was how to use Mu editor and how to code. Something challenging was figuring out what I wanted my circuit playground to do.

Amp Project Documentation 12/20/23

What did you make?

I made an amplifier that looks like a car where the 2 speakers are the wheels.

Thinking about the work you created, what are you most satisfied with this semester?

I am most satisfied that I was able to successfully execute my initial amplifier design.

If you were to start over, knowing what you know, what would you do differently?

If I were to start over, I would make my laser cutting for the front more clean, I would make the car bigger so that there is more room to fit the circuit, and be more precise when super gluing so that it looks for neat.

What is a lesson from this class that you will take with you and use in future projects?

A lesson that I will take with me in future projects is being more patient and taking my time so that the finished project looks neater and more precise. I will also take with me that even if something goes wrong or not as planned, there is always another way to fix it.

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