# Bpex, outside case


![image](https://wikifactory.com/files/RmlsZToyODQzOTE=)

The system lets air circulate freely, so it is possible to measure humidity and temperature while being protected from the rain. The measured temperature is indirect because it is protected from direct sunlight.

![image](https://wikifactory.com/files/RmlsZToyODQ0NzQ=)

​

Several units printed in 3D are superimposed while threaded rods solidarise the structure. This system avoids problems related to 3D printing \(media, printing in vacuum ...\). 3D printing made with white PLA will resist better in time, white reflecting light.

![image](https://wikifactory.com/files/RmlsZToyODQzOTc=)

![image](https://wikifactory.com/files/RmlsZToyODQzOTY=)

The parameters are adapted to host a Sodaq Explorer electronic board in LoRa with a temperature and humidity sensor. 3 threaded rods of M6 dimensions maintain the structure and give it a high rigidity.

![image](https://wikifactory.com/files/RmlsZToyODQzOTk=)

The interstices between each unit allow a possible wiring to be made without modification: power supply, external probe, reprogramming.


## Top hat and bottom part unit :



For the sake of simplicity, the same design is slightly modified for the upper and lower part unit. Some parameter are added in that file.

![image](https://wikifactory.com/files/RmlsZToyODQzOTg=)



## Parametric model:

Parametric means that by modifiying a parameter, you can regenerate the 3D model like apadt it to other electronics board size, other threads, choose another angle ...

![image](https://wikifactory.com/files/RmlsZToyODQ0MDA=)

### Default parameter :

```
shell = 0.4 \* 4; // multiple of the printer's nozzel size, here 0.4
sizeBase = 40; // bottom radius
sizeTop = 30; // top radius
pinInsideSize = 3.2; // Thread diameter
numberOfPin = 3; // number of thread
height= 20; // height of each element
```

## Licence :


​CC BY NC 4.0

Attribution :

* Luc Hanneuse, author, conception, realisation, OpenScad design, ptimisation for 3D printing & documentation.
* Florent Lemaire for OpenScad help
* AgriLab, http://agrilab.unilasalle.fr/ , Innovation Center & FabLab Collaborative innovation for Agriculture

Name : Bpex, Boitier Parametrique Extérieur

Contact for other licences or commercial usage : agrilab@unilasalle.fr

Inspired by the Stevenson screen


## Files

boitier\_parametrique.scad : https://wikifactory.com/files/RmlsZToyODQ0MTA=

boitier_parametrique-top_updated3.scad : https://wikifactory.com/files/RmlsZTozMTI0MjA=

boitier\_parametrique-top.scad : https://wikifactory.com/files/RmlsZToyODQ0MDg=

Rendered in STL, as example with a SodaQ Explorer LoRa Board :

https://wikifactory.com/files/RmlsZToyODQ0MDk=

[http://projects.fablabs.io/+agrilab/bpex-outside-case/file/boitier_parametrique.stl](http://projects.fablabs.io/+agrilab/bpex-outside-case/file/boitier_parametrique.stl)

https://wikifactory.com/files/RmlsZTozMTI0MjA=

[https://projects.fablabs.io/+agrilab/bpex-outside-case/file/boitier_parametrique-top_updated3.stl](https://projects.fablabs.io/+agrilab/bpex-outside-case/file/boitier_parametrique-top_updated3.stl)

https://wikifactory.com/files/RmlsZToyODQ0MDc=

[http://projects.fablabs.io/+agrilab/bpex-outside-case/file/boitier_parametrique-top.stl](http://projects.fablabs.io/+agrilab/bpex-outside-case/file/boitier_parametrique-top.stl)