Building a mobile projector box – The Summary

The Summary

A safe and mobile casing for the old projector was needed. It’s capable of streaming any media from another device using the steam hard- and software. All you need is a power socket and a white wall. Optional Ethernet input and audio output included.

What did it cost?

Besides the Projector and the Steam Link which were already there. The box and the HDMI sound separator were the most expensive. But see on you own.

Box 22,95 €
HDMI sound separator 15,99 €
audio jack recessed socket 12,50 €
Ethernet recessed socket 11,24 €
USB Power supply 7,00 €
Cinch to jack adapter 6,99 €
Power supply recessed socket 6,69 €
HDMI cable short 5,48 €
Ethernet cable short 4,85 €
Hinges 2,00 €
Total 95,69 €

How long did it take?

Prototype not included this needed about 40 hours. Most challenging was to cut the housing. First it needed to be shortened, than the holes fort the interfaces were needed.
If you have everything in place this could be put together in less than a half hour.

What’s next?

Let the Box hover over the ground and control it with your voice?! Well, first things first. Now it’s time for a movie!

Building a mobile projector box – The housing and the inner parts

The Box needed to enclosure the dimensions of the projector and had to fit under the bed frame. Not that easy.

In the end I ordered a higher box, and made a large cut to reduce their height by 2.5 cm.

With a nice equipment gaming PC next door, I tried to stream games to the projector via a Steam Link. This worked quite well as long as it was connected via Ethernet.
Another challenge was the sound output. The Steam Link only provides audio output via HDMI.

Even the projector was capable of playing sound, this was no fun. Only noise.

Unfortunately, the projector did not provide a way to output the sound. So I needed to split the sound from the HDMI signal before it went to the projector.

Cables over cables, this needed to be ordered.

Everything  stored in the lower part.

Interfaces. Power socket, two USB and Ethernet and audio output.

Angle adjustment is possible with a variable belt flap.

Building a mobile projector box – the summary

Building a mobile projector box – The Idea

The Idea

To watch movies from time to time on a canvas is the most comfortable position, I decided to place the projector right under my bed. In case it’s not used I would just slip it under the bed frame.

An easy solution was found by using a cardboard box, but  after some days a more orderly and safer solution was needed. So I decided to build a nice casing, which collects the cables and protects the projector.

It stated out the following features were useful:

  • low height of the case, capable to be stored under the bed (max height 21 cm)
  • two areas with the case (top and bottom), to hide the cables under to projector
  • adjustable horizontal angle of the projector
  • dust proof storage, if not in use
  • optional: sockets for power and Ethernet

See here the creation of the housing with several interfaces…