Gears and transmission
Mini 2WD Arduino Robot Chassis
- Bounding box
- 140.0 × 90.0 × 21.0 mm
- Engine
- Precision B-rep
- Parameters
- 23
- Published
- August 24, 2026
Download
Free to download and use. See the terms.
The prompt
Create a compact 3D-printable chassis for a miniature two-wheel Arduino robot car. The chassis should be a single-piece rectangular base with rounded corners. Include two symmetrical mounting areas on the left and right sides for small DC gear motors, with the motor shafts positioned so wheels can attach outside the chassis. Include a central flat mounting area for a small microcontroller board, a separate battery compartment, and small holes for routing wires. Add mounting holes for the electronics and make the chassis lightweight while remaining strong. Use approximately 2–3 mm wall and base thickness. Avoid unsupported overhangs and design the part so it can be FDM 3D printed flat on its bottom surface. Keep all features parametric so the motor, battery, board, and chassis dimensions can be changed later. Do not create decorative bodywork; this is a functional miniature robot-car chassis.
Parameters
| Name | Value | Range |
|---|---|---|
| Chassis Length | 140 mm | 80 – 220 |
| Chassis Width | 90 mm | 60 – 180 |
| Base Thickness | 3 mm | 2 – 4 |
| Wall Thickness | 2.5 mm | 1.5 – 4 |
| Corner Radius | 8 mm | 2 – 15 |
| Motor Mount Width | 34 mm | 20 – 60 |
| Motor Shaft Diameter | 6 mm | 3 – 12 |
| Motor Shaft Height | 10 mm | 6 – 20 |
| Motor Plate Height Above Base | 18 mm | 12 – 30 |
| Zip-Tie Slot Width | 3 mm | 2 – 6 |
| Zip-Tie Slot Spacing | 24 mm | 12 – 40 |
| Battery Length | 48 mm | 30 – 80 |
| Battery Width | 30 mm | 20 – 60 |
| Battery Wall Height | 16 mm | 8 – 30 |
| Battery Center X | -43.5 mm | -45 – 45 |
| Board Center X | 15 mm | -30 – 40 |
| Board Center Y | 0 mm | -20 – 20 |
| Board Hole Spacing X | 30 mm | 10 – 60 |
| Board Hole Spacing Y | 20 mm | 10 – 60 |
| Board Hole Diameter | 3.2 mm | 1.5 – 6 |
| Wire Hole Diameter | 5 mm | 2 – 10 |
| Wire Hole Spacing X | 48 mm | 20 – 80 |
| Wire Hole Spacing Y | 30 mm | 20 – 60 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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