🔩 Mechanics (files)
Design Overview
The design consists of three distinct components, each serving specific functions:
1. Top layer (head):
- Houses the PCB (and temperature sensor) and an integrated cooling fan.
- Acts as the top cover for the device, providing access to essential electronic components.
- Variations:
- One variation is tailored for the Arduino Nano BLE Sense, and does not include a hole at the top.
- Another variation accommodates the Arduino Nicla, featuring a hole to integrate a camera module.
2. Bottom layer (legs):
- Encases the battery and GPS module.
- Provides the possibility to attach the device to various surfaces.
3. Middle layer (optional):
- Designed to house the Particulate Matter sensor (Sensirion SPS30).
- Enhances functionality by adding air quality sensing capabilities.
List of Parts
| File Name | Image | Supports? | Printing Time | Download |
|---|---|---|---|---|
| octopus_top_nano.stl |  | Optional | 2h | Link |
| octopus_top_nikla.stl |  | Optional | 2h | Link |
| octopus_bottom.stl |  | Recommended | 2h30min | Link |
| octopus_middle.stl (optional) |  | Needed | Approx. 2h30min | Link |
| octopus_top_nano_fan.stl (optional) |  | Recommended | 2h15min | Link |
| octopus_top_nikla_fan.stl (optional) |  | Recommended | 2h10min | Link |
3D Printing
Suggested Settings
info
Printing in white or light colors is strongly recommended to minimize heat absorption and prevent overheating of internal components, especially for outdoor or high-temperature environments.
Printer Settings
- Layer Height: 0.2 mm (recommended for standard quality)
- Wall Thickness: 1.2 mm
- Infill Density: 10%-20% (adjust based on strength requirements)
- Print Speed: 50-70 mm/s
- Support Type: Tree (auto), with overhang angle set to 30°
Placement
It is generally recommended to place the components in a way that minimizes supports to minimize printing time and maintain the structural integrity of the parts.
The suggested placement of components on the print bed is as follows:
