DIY Electronics, Smart Projects, and Real-World Builds

J-Rat Techworks

I build practical, real-life projects using ESP32 boards, sensors, 3D printing, FreeCAD, Home Assistant, and whatever else I can get my hands on.
This site brings everything together in one place – code, wiring diagrams, parts lists, downloads, and full write-ups to make each project easier to follow.

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What You’ll Find Here

IoT Device with interconnections

Step-by-Step Project Guides

Each project includes diagrams, code, troubleshooting notes, and all the parts you need. Every YouTube video has a matching page here.

Recommended Tools & Parts

The hardware and components I use the most, tested across real builds, not just listed for the sake of it.

Realistic IoT chip with interconnections

Downloads & Files

STL files, PCB Gerbers, ESPHome YAMLs, Arduino sketches, and anything else used in my builds.

Behind-the-Scenes Notes

What worked, what didn’t, and the lessons learned while testing and breaking things along the way.