Brackets and mounts
Desktop Robot Chassis Assembly
- Bounding box
- 130.0 × 110.0 × 160.0 mm
- Engine
- Precision B-rep
- Parameters
- 42
- Published
- August 7, 2026
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The prompt
Design a watertight, 3D-printable hollow desktop robot chassis, 160mm tall, 130mm wide, and 110mm deep with 2.5mm wall thickness, split horizontally into two stackable snapping halves. Front Face Requirements: - Two 16.5mm diameter circular holes spaced 26mm center-to-center for an HC-SR04 ultrasonic sensor. - One 70mm x 42mm rectangular cutout for a display screen. - A grid of 2.5mm holes for speaker and microphone audio pass-through. Top/Head Section: - One 9mm circular cutout for a Raspberry Pi camera lens. Internal Features & Clearance: - 40mm of empty vertical space behind all front cutouts to fit standard jumper wire connectors without bending cables. - Four internal mounting standoffs with M3 screw holes (58mm x 49mm spacing) for a Raspberry Pi 3B. - A flat internal floor section (80mm x 55mm) to mount a mini breadboard and an L298N motor driver module. - Internal battery compartment slots at the bottom measuring 140mm x 75mm x 30mm for a power bank and two 18650 batteries. Bottom Face: - Mounting holes and a 30mm clearance area for front caster wheels and motor drives. - Cable routing channels (12mm diameter) passing vertically between the top, middle, and bottom internal sections.
Parameters
| Name | Value | Range |
|---|---|---|
| Outer Width | 130 mm | 50 – 200 |
| Outer Depth | 110 mm | 50 – 200 |
| Half Height (per shell) | 80 mm | 40 – 150 |
| Wall Thickness | 2.5 mm | 1 – 5 |
| Snap Lip Height | 2 mm | 0.5 – 5 |
| Snap Lip Width | 1.2 mm | 0.5 – 3 |
| Sensor Hole Diameter | 16.5 mm | 5 – 30 |
| Sensor Hole Spacing (center to center) | 26 mm | 10 – 50 |
| Sensor Holes Z Center | 60 mm | 20 – 150 |
| Sensor Holes X Center | 65 mm | 0 – 130 |
| Display Cutout Width | 70 mm | 10 – 120 |
| Display Cutout Height | 42 mm | 10 – 100 |
| Display X Center | 65 mm | 0 – 130 |
| Display Z Center | 80 mm | 20 – 150 |
| Audio Hole Diameter | 2.5 mm | 1 – 5 |
| Audio Grid Width | 40 mm | 10 – 80 |
| Audio Grid Height | 30 mm | 10 – 80 |
| Audio Hole Spacing | 5 mm | 2 – 10 |
| Audio Grid X Center | 65 mm | 0 – 130 |
| Audio Grid Z Center | 120 mm | 80 – 160 |
| Camera Hole Diameter | 9 mm | 5 – 20 |
| Camera X Center | 65 mm | 10 – 120 |
| Camera Y Center | 55 mm | 10 – 100 |
| Standoff Spacing X | 58 mm | 30 – 100 |
| Standoff Spacing Y | 49 mm | 30 – 100 |
| Standoff Pattern X Center | 65 mm | 0 – 130 |
| Standoff Pattern Y Center | 55 mm | 0 – 110 |
| Standoff Height | 15 mm | 5 – 30 |
| Standoff Diameter | 6 mm | 4 – 12 |
| Breadboard Floor Length | 80 mm | 30 – 120 |
| Breadboard Floor Width | 55 mm | 30 – 100 |
| Floor Slab Thickness | 3 mm | 1 – 6 |
| Floor Slab Z Height | 30 mm | 10 – 50 |
| Battery Slot Length | 90 mm | 30 – 120 |
| Battery Slot Width | 60 mm | 30 – 100 |
| Battery Slot Depth | 1.5 mm | 0.5 – 2.5 |
| Bottom Mounting Hole Diameter | 3 mm | 1 – 6 |
| Cable Channel Diameter | 12 mm | 5 – 20 |
| Channel 1 X | 20 mm | 10 – 120 |
| Channel 1 Y | 20 mm | 10 – 100 |
| Channel 2 X | 110 mm | 10 – 120 |
| Channel 2 Y | 90 mm | 10 – 100 |
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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