Three blue 3D-printed electronic enclosures are displayed on a black surface. The left and right designs are marked with red Xs, indicating failure, while the center design has a green checkmark, showing success. The left enclosure is broken apart, the right one has poor fitting, and the center one fits components well and is properly assembled. Text at the bottom reads: "First 3D Design."

My First 3D Design using TinkerCAD.

Since I got my first 3D printer, I want to learn 3D design to make my own model to solve my own problem. I don’t know how to start. I think I should start with something simple. Simple means easy, right? I have a DIY human presence sensor using an ESP32 and LD2410C. It’s in a very raw state. I want to make a simple case for it. So, I started with the most intuitive one, in my opinion, TinkerCAD. It looks like just dragging a few boxes around. ...

July 19, 2025 · 3 min · 548 words