Building hardware and software that work together.

JN Portfolio is where I document practical electronics and automation projects and share what I learn about programming and web development. I'm Josemar Neves, an electronics and telecommunications technician and software developer based in Luanda, Angola. I created this site to show, transparently, the process behind every build, from circuit to code.

Here you'll find complete projects with Arduino and ESP32 (sensors, automation, motor control), articles on programming (Python, Java, C++), and electronics, as well as a gallery featuring real workbench photos, prototypes, and the step-by-step development of each idea.

The goal is simple: to create useful, honest technical content for people starting out in embedded electronics or programming, and for anyone who enjoys following real projects, without the fluff and focused on what works (and what didn't work the first time). Want to learn more about my background? Visit the About page or view my resume.

I also publish videos. Follow the channel Arduino Tech X on YouTube and TikTok to see the projects in action. Have a question or suggestion, or want to share ideas? Get in touch.