PLANET-HOLOGRAM
![copertina.jpeg](/proxy/?url=https://content.instructables.com/FI0/5AWE/KTAEMNKC/FI05AWEKTAEMNKC.jpg&filename=copertina.jpeg)
Today I will show you how to build a hologram projector to view the planets and the moon through a special app.
What Will We Need?
![MaterialeNecessario.jpeg](/proxy/?url=https://content.instructables.com/FLQ/9OZS/KTAEM9C9/FLQ9OZSKTAEM9C9.jpg&filename=MaterialeNecessario.jpeg)
![piramide.jpeg](/proxy/?url=https://content.instructables.com/FDJ/0HR9/KTAEM988/FDJ0HR9KTAEM988.jpg&filename=piramide.jpeg)
![immagine della struttura e dellapiramide.jpeg](/proxy/?url=https://content.instructables.com/F2Q/P063/KTAEM98A/F2QP063KTAEM98A.jpg&filename=immagine della struttura e dellapiramide.jpeg)
- An Android smartphone (to run the app)
- A pyramid for holograms (here's how to build it)
- A 3D printer to print the projector casing
Print the Device
![Stampa3d.jpeg](/proxy/?url=https://content.instructables.com/FT4/TVCD/KTAEM987/FT4TVCDKTAEM987.jpg&filename=Stampa3d.jpeg)
The first step is to print the stl file (Attention the 3d model is made according to the measurements of my Samsung S3, if necessary modify it). The duration of printing is approximately 7 hours and 45 minutes.
Downloads
Download and Install the Application
![PLANET-HOLOGRAM](/proxy/?url=https://content.instructables.com/F29/ATXC/KTAEM9PR/F29ATXCKTAEM9PR.jpg&filename=PLANET-HOLOGRAM)
Download the app apk from here. I recommend enabling the download from unknown sources. Launch the app and insert the phone into the newly printed device. Place the holographic pyramid inside the hole and enjoy the show.