Brackets and mounts
NutriSafe IoT Enclosure - Base Chassis and Lid (Exploded Multi-Part)
- Bounding box
- 245.0 × 80.0 × 35.0 mm
- Engine
- Precision B-rep
- Parameters
- 51
- Published
- November 12, 2026
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The prompt
make me full 3d printing model depending on the following details: Act as an expert Industrial Designer and CAD Engineer specializing in IoT hardware enclosures and FDM 3D printing. I am building the physical prototype for "NutriSafe," an AI-powered IoT food spoilage monitor. I need you to design a highly optimized, 3D-printable enclosure. **HARDWARE COMPONENTS TO HOUSE:** 1. 1x ESP32 Dev Board (Requires a cutout for the USB power port). 2. 2x Gas Sensors: MQ-135 and MQ-6 (Require exposed ventilation grilles to sample ambient air). 3. 1x DHT11 Temperature/Humidity Module. 4. 1x 0.96-inch I2C OLED Display (Requires a precise front-facing window cutout). 5. 1x 5V DC Mini Fan (30x30mm or 40x40mm) (Requires an exhaust vent and mounting posts). 6. 1x Active Buzzer. 7. Main Custom PCB / Perfboard footprint (assume approx. 80mm x 60mm). **DESIGN & STRUCTURAL REQUIREMENTS:** - **Form Factor:** Compact, rectangular, and wall-mountable or clip-mountable inside a pantry or refrigerator. - **Assembly:** A two-part clamshell design (Main Chassis + Lid). Use either snap-fit joints or 3mm holes in the corners for M3 screws. - **Wall Thickness:** 2mm walls for rigid FDM printing. - **Airflow/Olfactory Chamber:** The design must allow passive air intake over the MQ sensors, with the 5V fan mounted on an adjacent side to actively pull/exhaust air out of the enclosure when triggered. - **Internal Standoffs:** Include 5mm tall standoffs/pegs to hold the PCB securely so solder joints don't touch the bottom. Include mounting clips or a bezel for the OLED screen. **YOUR DELIVERABLES:** 1. **OpenSCAD Code:** Write a complete, compilable OpenSCAD script that generates both the Base and the Lid side-by-side. Use distinct modules for `base()` and `lid()`. Include the cutouts for the USB, OLED, Fan vent, and sensor grilles. 2. **CAD Blueprint / Layout Strategy:** Provide a precise millimeter-by-millimeter breakdown of the dimensions (L x W x H) and layout strategy, just in case I want to manually model this in Fusion 360 or TinkerCAD instead of using the script. 3. **Slicer / Print Settings:** Recommend the best filament material (keeping food-storage environments and cold temperatures in mind), infill percentage, and support structures needed for slicing.
Parameters
| Name | Value | Range |
|---|---|---|
| Enclosure Length (X) | 110 mm | 90 – 160 |
| Enclosure Width (Y) | 80 mm | 65 – 120 |
| Base Height | 35 mm | 25 – 60 |
| Lid Height | 12 mm | 8 – 25 |
| Wall Thickness | 2 mm | 1.2 – 4 |
| Corner Screw Inset | 4 mm | 3 – 12 |
| M3 Clearance Hole Dia | 3.4 mm | 2.8 – 4.2 |
| M3 Pilot Hole Dia | 2.5 mm | 2 – 3 |
| Corner Boss Dia | 7 mm | 5 – 11 |
| PCB Length | 80 mm | 50 – 100 |
| PCB Width | 60 mm | 40 – 75 |
| Standoff Inset from PCB Corner | 4 mm | 2 – 12 |
| Standoff Height | 5 mm | 3 – 12 |
| Standoff Dia | 6 mm | 4 – 10 |
| Fan Axis Height | 17.5 mm | 10 – 45 |
| Fan Opening Dia | 28 mm | 20 – 40 |
| Fan Screw Spacing | 24 mm | 16 – 32 |
| Fan Post Dia | 6 mm | 4 – 9 |
| Fan Post Length | 8 mm | 5 – 16 |
| MQ Grille Slot Count (per sensor) | 5 count | 2 – 9 |
| MQ Grille Slot Width | 2 mm | 1 – 4 |
| MQ Grille Slot Height | 16 mm | 8 – 24 |
| MQ Grille Slot Pitch | 4 mm | 2.5 – 8 |
| MQ Grille Centre Offset | 25 mm | 12 – 45 |
| MQ Grille Centre Height | 18 mm | 8 – 30 |
| DHT11 Slot Count | 4 count | 2 – 8 |
| DHT11 Slot Width | 2 mm | 1 – 4 |
| DHT11 Slot Height | 10 mm | 5 – 20 |
| DHT11 Slot Pitch | 4 mm | 2.5 – 8 |
| DHT11 Grille Centre (Y) | -20 mm | -34 – 34 |
| USB Cutout Width | 12 mm | 8 – 20 |
| USB Cutout Height | 6 mm | 3 – 12 |
| USB Cutout Height (Z) | 12 mm | 5 – 28 |
| USB Cutout Position (X) | 30 mm | 5 – 48 |
| Buzzer Sound Hole Dia | 2 mm | 1 – 4 |
| Buzzer Sound Hole Count | 4 count | 2 – 8 |
| Buzzer Sound Hole Pitch | 5 mm | 3 – 10 |
| Buzzer Hole Height | 26 mm | 10 – 32 |
| Buzzer Hole Position (X) | 38 mm | 10 – 48 |
| OLED Window Length (X) | 24 mm | 18 – 30 |
| OLED Window Width (Y) | 12 mm | 8 – 18 |
| OLED Window Offset from Centre | 20 mm | 0 – 32 |
| OLED Bezel Height | 8 mm | 3 – 10 |
| OLED Bezel Inner Size | 27.4 mm | 24 – 32 |
| OLED Bezel Wall Thickness | 3.5 mm | 1.5 – 6 |
| Lid Vent Slot Count | 4 count | 2 – 8 |
| Lid Vent Slot Width | 2 mm | 1 – 4 |
| Lid Vent Slot Length | 14 mm | 6 – 24 |
| Lid Vent Slot Pitch | 4 mm | 2.5 – 8 |
| Lid Vent Row Position (Y) | 10 mm | -30 – 32 |
| Exploded Layout Gap | 25 mm | 5 – 80 |
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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