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Case for Papilio Duo FPGA and LCD Projects

by elkayem, published

Case for Papilio Duo FPGA and LCD Projects by elkayem Jul 2, 2016
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Sketchup

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468Views 101Downloads Found in Electronics

Summary

This is a simple case that will enclose the Papilio Duo FPGA board, 7" LCD screen, and analog joystick. I used it for a Mandelbrot fractal explorer project. I have made the SketchUp file available in case anyone wishes to tailor it for their own Papilio Duo project, e.g., a Papilio Arcade project, or even a project using another board such as a Raspberry Pi.

Here is a short YouTube video of my fractal project with this case. The text in the YouTube link contains more information about this FPGA project:
https://youtu.be/OqxMnT_Ruuk

The code for this project can be found at: https://github.com/elkayem/Mandelbrot-Explorer

A few details on the hardware:

  • The mounting hole pattern is designed for the Papilio Duo, and mounts with M2 nylon bolts. It can be easily modified in SketchUp to mount a different board (e.g., other Papilio boards, Arduino, Raspberry Pi, Beaglebone, etc).
  • The LCD mount fits a 7" LCD screen with display driver board. The one I used can be found by searching "7 inch 1024*600 TFT LCD Display Driver Board HDMI VGA 2AV for Raspberry Pi" on eBay. I've included a picture of the one I used. The case design includes a mount for the display driver on the back of the LCD screen, using M2 nylon bolts.
  • A mount is included for a PS2 style analog joystick. There are a lot of joystick modules out there with slightly different hole patterns. I've included an image of the one I used, which is available from all the usual sources for a few dollars. Search for "joystick module arduino" and you should be able to find this one. Or modify the SketchUp for your own module. (Note: the Papilio Duo includes an AVR chip, programmable using the Arduino IDE. The analog joystick can be read by this AVR chip.)
  • My project required two buttons and rotary encoder, all of which required a 6mm diameter hole. Your own project may require something different. The hole placement and size can easily be modified in SketchUp.
  • The top and bottom of this case attach together using M3 standoffs. I used two 30mm male/female brass standoffs connected together. I intentionally did not raise the walls of the case all the way so I could easily access the electronics inside while the case is closed. Again, the walls can easily be raised in SketchUp if you desire a sealed case.

Hopefully someone finds this all useful. I admit it's a pretty specific application, but the design can be modified to suit your own project's needs.

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good to see some Papilio gear :)

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