![](https://cdn.myportfolio.com/df778f0fe5ca86d6861c161d7ef27126/6c64bd0e-478c-4234-9d3b-b9ee0ccc88f4_rw_1920.png?h=706f7d43a93e916630d0ee1725c24e06)
Casing for Raspberry Pi 8 Channel Relay Expansion Board.
Target was to create an inexpensive casing within a short time. The task included industrial and mechanical design.
The wall-mounted casing is made of three parts.
1. Transparent lens is cut from plastic sheet. It is tinted and back-printed to hide the hardware and show the icons and branding. The lens has a hole for an easy access to relay screws.
2. Plastic case is injection molded. It is designed for manufacturing with a natural mold, that is cheaper than multipart mold. The case has a hole for wiring.
3. Plastic part is attached to the plastic case to close the plug holes in the case.
![](https://cdn.myportfolio.com/df778f0fe5ca86d6861c161d7ef27126/ede077dd-7a7e-4e9a-b28c-6fe874fc7366_rw_600.jpg?h=278bf4cfb500b184cf84f8762eb7c495)
Photo by robomaa.fi
![Logo detail.](https://cdn.myportfolio.com/df778f0fe5ca86d6861c161d7ef27126/2e22c809-7559-4a5e-b884-29a3f0737048_rw_1200.png?h=1fbde87bc5a342f233dd1e821448aa46)
Logo detail.
![Access to relay screws and wiring.](https://cdn.myportfolio.com/df778f0fe5ca86d6861c161d7ef27126/79c02a99-99d8-4e89-9543-8cb8552b822c_rw_1920.png?h=f55e8ff3d91f700a51bee841154f2aca)
Access to relay screws and wiring.
![Mechanical design details.](https://cdn.myportfolio.com/df778f0fe5ca86d6861c161d7ef27126/2b774c04-8298-43d1-ac3f-7e8bfddf6212_rw_1920.png?h=97692dce4bb196cfef5410b1c46e6b49)