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  • Author Author: luislabmo
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Hologram Pi-ramid - 3D CAD/CAM design

luislabmo

Following up the initial design of the Hologram Pi-ramid, the next step that made sense to me was to start designing the project in a 3D CAD/CAM software; this allows me to get a feeling on how the project should look like, make adjustments, corrections and most importantly, I wanted to measure the dimensions of each side of the Plexiglass pyramid once it was defined within the project.

 

I started by finding mechanical drawings of the key components like the Raspberry Pi 3B+ and the 7" Touch display, then I replicated them in Autodesk Fusion 360 with high level detail; I was only interested in replicating in the model the most relevant characteristics of the components like the tallest part, location of GPIO and power connections, parameter that may have an impact in the final design of the Hologram Pi-ramid. When an important detail was missing a vernier caliper most likely will do the missing work.

 

Mechanical drawings

 

{gallery:width=960,height=768,autoplay=false} Raspberry Pi and Display dimensions

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RPi 3B+: Raspberry Pi 3 B+ dimensions

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Touch Display: Raspberry Pi Touch Display dimensions

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Touch Display: Raspberry Pi Touch Display radius

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Micro USB: Dimensions

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Hologram Pi-ramid: Important measurements

 

Once I was happy with the results I designed the Plexiglas pyramid and then everything else around it. As some you may have guessed, shiny colored parts will be 3D printed, each pictured in the design with different color just to differentiate them.

{gallery:width=960,height=768,autoplay=false} Hologram Pi-ramid design

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Hologram Pi-ramid: Hologram Pi-ramid design - 1

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Hologram Pi-ramid: Hologram Pi-ramid design - 2

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Hologram Pi-ramid: Plexiglass pyramid

 

This design will be a constant work in progress but will provide an idea of how the overall design will evolve and more importantly, this initial design will help me with my initial tests of the Pepper's ghost effect.

 

 

Blogs in this series

 

  1. Hologram Pi-ramid - Intro and initial design
  2. Hologram Pi-ramid - 3D CAD/CAM design
  3. Hologram Pi-ramid - 3D printed parts and initial assembly
  4. Hologram Pi-ramid - Plexiglass Pyramid
  5. Hologram Pi-ramid - My name is Automan
  6. Hologram Pi-ramid - PCB Design
  7. Hologram Pi-ramid - Painting the 3D printed parts
  8. Hologram Pi-ramid - Electronic Parts
  9. Hologram Pi-ramid - Displaying Holograms
  10. Hologram Pi-ramid - Project complete!

 

 

 

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Intro and initial design

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3D printed parts and initial assembly

  • in reply to shabaz

    Hello , those are excellent ideas!. I'm affraid you are right, it requires a lot of computation to bring some custom effects using object detection, also putting the camera on top may make the project bulky as using the official touch-screen leaves the Plexiglas pyramid on the small side unfortunately, time will tell how far/complex I can get before the deadline.

     

    Luis

  • Hi Luis,

     

    That's very cool modelling and rendering! I get the feeling your techniques here could also come in use for the later phases when creating the actual effects : ) I saw a Pepper's Ghost on stage a couple of years ago, and it's impressive how realistic the effect is, so it's going to be really interesting seeing your project come to life with the LCD and Plexiglass, and what animations/effects you'll render using it.

    Just thinking out loud, your pyramid is also suitable for inserting an object, so maybe a future modification after the design challenge could even be to feed the camera into the top area of the Plexiglas pyramid, so it can look down, see the object, and then animate any effects using the image data for some interaction. I've no idea how that would look though! Could also be a lot of computation. I was thinking magic dice, where if the Pi sees what number is upright, then some character moves in a 3D room or something.

    Best of luck with your project!