This section is a little guide on how we built and crafted various part of the prototype. These are only suggestions of how we did our job, and they might be useful to speed up the process of builiding something similar. Nevertheless, there are – for sure – other ways to achieve similar results.
In order to craft a switch we
1- Fixed cardboard of the floor with;
2- Fixed the metallic tape to a paper sheet (in order to make changes more flexible);
3- Fixed a metallic wire on the metallic tape;
4- Put some foam (in order not to have false positives);
5- Repeated point from 1 to 3 on top of the foam.
When the two wires make contact they close the circuit and activate part of the installation. One wire is attached to the ground using paper and masking tape. The other wire is attached the same way to the masegno.
We then connected to Arduino as the schematics below shows:
In order to project sideways, we:
1- Built a box for the projector, taking care of giving space for ventiation
2- Created a shelf to hang the projector on the wall. It was mounted using stirrups and wires. We gave extra support with the rope.
3- Screwed a vertical piece of wood onto the shelf
4- Bolted the box onto the wood as shown in the picture below
5- For support we used metallic wires and clamps attached to the wooden grid on the wall
Hacking the flashlight
In order to have a cheaper way of buying and array of LEDs we:
1- Bought two 16LEDs flashlights
2- We opened the flashlights and used only the top part (the one that contains the LEDs)
3- Using four wires total we soldered one wired to the positive end and another to the negative end of each flashlight; therefore, two wires for positive ends and two for negative
4- The two negative ends were coiled to each other. The same for the positive. In the end we had one positive end and one negative just like it would be with a normal LED.