Electronics

Arduino 3D Models: Cases, Robot Arms and STL Parts

This collection gathers 3D models that people print for Arduino-based builds: board cases and holders, robot arms and hands, drawing machines, and a few items that only share the keyword. It is useful when a project needs a printed part rather than a store-bought one, and when the electronics are already chosen. Each listing leads to an author page with the STL files and the notes that come with them. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

How this collection is put together

Polyzon assembles this collection from search results on the connected platforms. Repeats and models without a preview are removed, weak matches go to the end, and the rest keeps the search order. Models belong to their authors — check the terms on each model's page.

Selection rules: the Polyzon editorial team · Text updated 2026-10-15


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About the category

«Arduino 3D Models: Cases, Robot Arms and STL Parts»

The models fall into a few groups. Enclosures range from a snug shell for a single board to larger portable lab cases and breadboard holders, and they differ mainly in how the board is fixed inside and where the openings sit. Robot arms and hands are multi-part builds that usually combine printed joints with servos and a controller, while drawing machines and plotters use a frame, rails and a CNC shield. The reference also shows fandom props and figures that have nothing to do with microcontrollers, so a quick look at the title and preview images saves time.

Before printing, open the author's page and read what is listed there: overall size and scale, the number of separate parts, whether the model is split for a smaller build volume, and whether supports are mentioned. Check the material and settings the author gives, since thin walls and close tolerances behave differently in PLA and PETG. For anything that moves, look at how the joints, bearings and fasteners are described, and at photos of real prints rather than renders. If the electronics are not specified, the mechanical parts may still work, but the assembly order is worth reading first.

Search results for this topic are noisy, so refining the wording helps. Try synonyms such as enclosure, housing, mount, bracket or holder instead of case, and add the board name or form factor when the fit matters. For moving builds, terms like robotic arm, gripper, plotter, drawing machine or CNC frame return different sets than a plain keyword. Related directions include electronics project boxes, sensor mounts, camera sliders and small workshop jigs, which often appear under the same search terms.

FAQ

Frequently asked questions

What kinds of Arduino models appear in this collection?
Mostly printed cases and holders for boards, multi-part robot arms and hands, and drawing machines or plotters that use a CNC shield. Fandom props and figures also show up because they share the keyword.
What should I check on a model page before printing a case?
Look at the board dimensions the author lists, the wall thickness, how the lid or board is fixed, and where the cable and port openings are. Photos of a finished print show more than a render.
Do robot arm models require parts beyond the printed pieces?
Usually yes. The author's notes normally describe servos, bearings, screws and the controller used, and the printed parts are only the frame and joints. Read the parts list before starting.
How do I avoid unrelated results?
Add a board name or a functional word such as enclosure, mount, gripper or plotter to the query, and check the preview image before opening a listing. Searching by project type narrows the results faster than a single keyword.

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