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Jeremias Fernandes Vigo

Jeremias Vigo

Studies Electrical and Computer Engineering at UMass Lowell

Over the past years, I had the opportunity to work on a variety of electronic projects, many of which were developed as part of my engineering coursework. These projects allowed me to apply theoretical knowledge and gain hands-on experience in problem-solving, circuit and PCB design, and system integration. The following are some of the most recent projects I have been working on.

  • My ePortfolio

SmartRegen 10A: TL494-Based PWM DC Motor Controller with Current Limiting and Regenerative Braking

Jeremias Vigo June 14, 2026

Upgraded 12V/10A TL494-based PWM DC motor controller featuring MOSFET H-bridge drive, current limiting, regenerative braking, DC-bus overvoltage protection, dump-load braking, and a custom PCB layout for higher-current motor control applications.

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TL494-Based PWM DC Motor Controller with Current Limiting and Regenerative Braking

Jeremias Vigo June 5, 2026

The SmartRegen Motor Controller is a custom-designed DC motor driver built for robotics and energy-recovery applications. The goal of this project was to design a fully discrete motor controller instead of relying on an off-the-shelf motor driver module. This design combines analog PWM control, MOSFET power switching, current limiting, regenerative braking, overvoltage protection, and custom PCB layout into one integrated system.

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54-LED All-Hardware Infinity Mirror with Voice Meter and Demo Mode (Featuring PWM Brightness Control)

Jeremias Vigo April 13, 2026

54-LED all-hardware infinity mirror built using analog electronics, discrete logic, and MOSFET drivers instead of microcontrollers or programmable LEDs. The system features both demo mode and voice-meter operation, along with PWM brightness control, making it a strong example of practical circuit integration, PCB design, and hardware-based visual output.

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Traffic Light with Pedestrian Crossing Controller

Traffic Light with Pedestrian Crossing Controller (using Raspberry Pi Pico 2, ARM Assembly)

Jeremias Vigo February 1, 2026

A breadboard traffic-light controller with a pedestrian request button, built on a Raspberry Pi Pico 2. Six LEDs simulate car + pedestrian signals, while an ARM Cortex-M0+ assembly state machine handles safe timing, debouncing, and all-red transitions.

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Code Breaker Circuit Using LM358 Window Comparator

Jeremias Vigo December 23, 2025

This analog “Code Breaker” checks on a combination of two-resistor code using LM358 comparator thresholds and simple diode logic, then drives clear PASS/FAIL LEDs with 2N7000 MOSFETs from a 5 V rail. The code can be easily changed by swapping the code resistors. The design was tested in Multisim, built on a breadboard, and finalized as a PCB in Altium.

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USM16-6CH: Custom-Built 6-Channel Ultrasonic Module

Jeremias Vigo August 19, 2025

The USM16-6CH is a custom six-channel ultrasonic module designed for stability, precision, and adaptability. Unlike commercial sensors, it integrates all components into a single PCB, minimizing wiring issues and supporting multiple communication protocols. Built for collision-assist robotics, drones, and automation systems, it overcomes the flaws of infrared and low-cost ultrasonic sensors, providing a compact and reliable alternative.

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