Andre Roths

my portfolio

Featured Projects

Antweight Battlebot

This BattleBot is built for the 250-gram antweight class, emphasizing precision engineering, agility, and durability within strict weight constraints. The design features a lightweight yet robust chassis, efficient brushed drivetrain, and a compact weapon system—all carefully optimized to maximize performance without exceeding the weight limit. Every component was selected and positioned with weight distribution and mechanical resilience in mind. This project involved full mechanical and electrical design, including CAD modeling, motor and ESC selection, and radio control integration. It showcases a focused approach to compact, competitive combat robotics.

10-Band Audio Equalizer

This analog audio equalizer is a full product design currently in its second iteration. It features carefully tuned analog circuitry for multi-band frequency shaping, built with a focus on high audio fidelity and low noise. The design process began with a deep dive into filter theory—using multiple feedback (MFB) topology and Chebyshev response characteristics to calculate precise component values for each band. From there, the project expanded into full schematic development, custom PCB layout, and enclosure design. The second iteration improves signal clarity, tightens filter accuracy, and refines the overall user experience. This ongoing effort highlights a hands-on, theory-driven approach to analog audio engineering.

Solar Cell Characterizer

Designed specifically for a chemistry lab environment, this solar cell characterizer is a fully integrated test fixture for precise evaluation of photovoltaic devices. The system includes tightly controlled temperature regulation, programmable light intensity and spectrum, and high-accuracy current and voltage sensing. Engineered for reproducibility and reliability, it enables detailed I-V curve analysis and efficiency testing under simulated environmental conditions. The design focuses on minimizing measurement noise and thermal drift, making it ideal for research and development applications. This project demonstrates a full custom hardware design tailored to experimental solar cell characterization.

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