My Projects
Spring 2025
Completed
Time Delay Disposable Camera
As a gift to my friend, who loves to use disposable cameras for photography, I have designed, built, tested, and shipped this complete novel product. The main goal of this project was to add functionality to a unmodified disposable camera. Utilizing all digital electronics (no microcontroller), I designed a timing circuit, servo actuation circuit paired with a battery charging and power distribution circuit to form a complete closed system design. This design features micro USB charging, a tripod mount, and quick snap in/snap out mounting for the camera.
Issues:
- A lack of bulk capacitance on the power rail led to excessive voltage droop.
- PLA enclosure deforms and cracks in its protective case leading to obvious seams and the fixture to weld itself to the disposable camera.
- JST connectors used(although easy to use for testing) had an extremely high profile. A ZIF or other low profile connector should be used instead.
- Heat set inserts chosen were designed for injection molding, meaning they were difficult to install and did not perform well in a 3d printed enclosure.
- Activation method for the camera was crude and should be redesigned.
Spring 2025
Completed
Battlebot
I designed this battlebot to compete in my own battlebot tournament among friends. This bot features a horizontal spinner design, which I favor due to its ability to operate while inverted. This bot also features indented wheel wells for protection, swappable, direct drive weapons, as well as a carbon fiber shell.
Spring 2023
Completed
10-Band
Audio Equalizer
My 10-band audio equalizer was born from an electronics class project. Me and my classmate Justin Craven designed, tested, and built a complete audio equalizer. We both focused on the design of the 10 Butterworth filters. While Justin focused on building and designing on breadboard, I focused on PCBA, 3d modeling, 3d printing, and PCB testing.
Fall 2023
Completed
Solar Cell Characterizer
This project was developed as part of the ‘special topics’ course at CSU-Chico. I communicated with the faculty on different potential projects, and landed on this solar cell characterizer project working with Dr. Meehan, due to my newfound love for power electronics as well as analyzing analog signals. The finished project is intended for the chemistry department, where they are developing organic solar cells. My project plots the IV curve of these cells at a specified temperature and light level to verify their achievements. My project is based on a custom PCB that I designed, and later revised, as well as Peltier modules for temperature control. The improved PCB is an Arduino shield to reduce complexity and solves all major issues with the former.
Spring 2024 - Present
Testing
Audio Equalizer v2
This is an update to the original audio equalizer, fixing multiple issues that appeared after testing.
New features added:
- Battery operated
- 20% smaller
- Higher audio quality
- On/Off switch
Bugs fixed include:
- Buffer resistors to prevent shorting
- More efficient routing of traces
- Curved edges for better DFM
- SMD IC’s to improve space efficiency
Spring 2024
Completed
Spotify to Youtube Music Converter
This project was created to seamlessly share my music albums with my girlfriend, Bo, who uses Spotify. Drawing on the Python skills I developed during my research work, I taught myself how to integrate the Google Cloud API and Spotify API to enable the transfer of albums between the two platforms.
Fall 2024 - Present
Completed
Planar Magnetic Speaker Driver
This is my current working project, along with soldering and debugging the v2 EQ. this project will assist me in my goal of developing my own custom set of active noise cancelling headphones from scratch. The system uses 14 bar magnets in parallel, along with a Flex PCB with a coil traced on as my diaphragm. Currently developing the 3d printed housing of the driver for my fist test.
Fall 2023
EMG Signal Analysis
This project was designed to predict the hand motions of the game ‘rock paper scissors’ using EMG signal analysis processed by MATLAB. I utilized digital filters, more specifically a fourth-order IIR Chebychev lowpass filter implemented through MATLAB.
Utilizing a bandpass filter would have been more efficient for removing low-frequency noise, however acceptable results were achieved with a lowpass filter as most of the noise was high-frequency.
As hardware was not the focus of this project, I utilized an Arduino UNO for data acquisition through the unfiltered port of the SparkFun EMG sensor. The results of the ADC were sent via serial communication to my laptop, where I read the output using RealTerm and saved it to a CSV for processing in MATLAB.
Fall 2022
Two Stage Bipolar CE Amplifier
A multistage bipolar CE amplifier is an amplifier designed out of BJT transistors cascaded together to achieve a larger gain than a single transistor amplifier. The emitters of the transistors share a common emitter node to provide a desired output characteristic. This essentially means that the emitter on the BJT 1 an BJT 2 are connected through a wire, as well as a coupling capacitor.
This project was a lab for our Electronics 1 course at CSU Chico.
Fall 2022
Differential Amplifier
The differential amplifier is one of the fundamental building blocks of analog electronic circuits that I learned about in my undergraduate career. A differential amplifier is a type of amplifier that takes the difference between two input signals and amplifies them while rejecting common mode signals present in both signals. This second property is especially useful when dealing with noise or any kind of interference. In this lab, I investigated the properties of differential amplifiers. I also investigated different configurations of these amplifiers, such as adding a common sinusoidal fluctuating source to the base of each transistor to act as noise. Through the process of this experiment, I assessed the advantage and disadvantages of the differential amplifier.
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