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Matheus Azevedo Vargas
Full-Stack & Embedded Systems Developer | IoT & PCB Design
New to Contra
Matheus Azevedo is ready for their next project!
CKP RPM Sensor Troubleshooting & Repair — Rampage Baja UFJF
During my work with Rampage Baja UFJF, I identified and solved a longstanding issue involving the vehicle's CKP (Crankshaft Position) sensor, responsible for measuring engine RPM.
The problem had been affecting the team for more than three years, with the existing board presenting reliability issues that made it difficult to obtain a consistent RPM signal. I approached the problem through electrical troubleshooting and circuit analysis, investigating the PCB, signal paths, soldering points, and sensor interface to identify the source of the failure.
Using my knowledge of electronics, embedded systems, circuit analysis, and practical hardware debugging, I was able to diagnose the problem and implement a repair to restore the sensor's functionality.
Beyond fixing a specific circuit, this experience taught me the importance of systematic troubleshooting, understanding legacy hardware, and turning theoretical knowledge into practical solutions. Solving an issue that had remained unresolved within the team for years was one of the projects that most demonstrated my ability to take ownership of a technical problem and deliver a working solution.
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Architectural Visualization & Design Portfolio Website
I developed a professional portfolio website for an architectural visualization and design studio, focused on presenting creative work and services to an international audience, particularly U.S.-based builders and developers.
The website was designed with a clean, editorial visual identity, combining architectural references, typography, subtle animations, and a neutral color palette to create a premium and professional experience. The homepage introduces the studio, its positioning, and its core value proposition, while providing clear navigation to services, selected projects, and contact.
The project also includes multilingual support, with English, Portuguese, and Spanish options, making the platform suitable for international clients.
I focused on creating a responsive and intuitive interface that balances visual presentation with usability, transforming the portfolio into a digital product capable of communicating the studio's work, positioning, and services to potential clients.
This project involved frontend development, responsive UI design, component organization, navigation, multilingual interfaces, and visual design implementation, with an emphasis on delivering a polished experience aligned with the architecture and design industry.
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LoRa Telemetry System — Rampage Baja UFJF
As part of the Rampage Baja UFJF, I developed a complete telemetry system for the Baja vehicle, designed to collect, transmit, and monitor real-time vehicle data during testing and competition.
I designed a custom LoRa communication board, integrating a microcontroller, LoRa module, power regulation, status indicators, and CAN bus communication to interface with the vehicle's electronic systems. The PCB was designed from the schematic through component placement and routing, with dedicated interfaces for CANH, CANL, 5V, and GND.
The board is part of a broader telemetry architecture that I also developed, enabling data collected from the vehicle to be transmitted wirelessly over long distances and made available for monitoring and analysis.
This project combined embedded systems, PCB design, LoRa communication, CAN bus, firmware, and telemetry software, with the goal of bringing real-time data acquisition and vehicle monitoring to the Rampage Baja UFJF.
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Rampage Baja UFJF Management System
The Rampage Baja UFJF Management System is a web-based platform developed to centralize and organize the management of the Baja SAE team. The project was designed to replace fragmented processes and provide a single environment where members can manage technical, administrative, and team-related activities.
The system includes a dashboard with an overview of the team's current status, active members, projects, pending tasks, upcoming competitions, and accumulated working hours.
One of its main features is the task management system, organized in a Kanban-style workflow with stages such as Backlog, In Progress, In Review, and Completed. Tasks can include priorities, deadlines, assigned members, and completion status, making it easier for different sectors of the team to coordinate their activities.
The Vehicle module allows the team to manage different Baja versions and keep track of important technical information such as weight, power, torque, and maximum speed. It also provides dedicated sections for components, tests, and failures, creating a structured history of the vehicle's development and maintenance.
The platform also includes modules for members, projects, telemetry, work hours, finances, calendar, and warnings, creating an integrated management environment for the entire team.
From a software development perspective, the project involved designing a role-based management system, database structures, authentication, dashboards, CRUD operations, and a responsive user interface. The visual identity was built around the team's red, black, and white branding.
Overall, the project demonstrates how software can be applied to engineering team management, connecting project organization with the technical development of the Baja vehicle and helping the Rampage Baja UFJF operate in a more structured, collaborative, and data-driven way.
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