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  • Author Author: balearicdynamics
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PiIoT - The perfect reading place #12 [tech]: SenseHAT interactive, the controller interface case

balearicdynamics

A special case

The position and motion sensors information from the SenseHATSenseHAT on the Raspberry PI3Raspberry PI3 together with the RGB 8x8 display are  the perfect tool to make the controller interactive interface for IoT project.

Making the device easy to control by any kind of user the hardware needs a case. The form design and the impacting bright yellow colour harmonise with the site where the installation will be set in place; it is also an easily identifiable object by visually-impaired users.

The following images shows the rendered design of the case hosting the PI3 and SenseHAT

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The design has been split in two halves to include the hardware elements as shown below:

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Top and bottom parts will be fixed with 4 Parker screws. Based on the first tests the internal air circulation should be sufficient for Raspberry PI3 cooling.

3d printing and assemblilng

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The 3D printing operation requires about 5 hrs total with a 0.4mm nozzle and a layer thickness of 0.2mm The case will not be stressed mechanically so it is sufficient setting the internal fill to 25% with a 0.6 thickness to the sides. As shown in the above image most of the time required depends on the need of a full internal support of the empty spaces.

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The above image shows the "kit" components ready for assembling; note the the open window for the SenseHAT LCD will be sealed with a 2mm opaline acrylic frame: this generates a nice effect for the display readability. The internal hardware does not need to be fixed with screws but a 5mm antistatic foam bed is sufficient, pressing the internal assembly when the screws are closed.

 

{gallery} Assembly steps

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The components ready for assembly

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The top side with the Raspberry PI3 fit in place.

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The case ready to be closed

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Closing the case with the four screws

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  • Hi Enrico,

     

    That looks amazing, especially the curves, and it is practical too, with ventilation slots and everything : )

    By the way, if you want to use M3 machine screws (bolts) instead of wood screws, I found a convenient way recently.

    I tried it with acrylic, but it would work with 3D printed stuff too.

    Basically, design in some holes, and then insert these brass heat sertsbrass heat serts. Perhaps press-fit is ok too, but

    I used heat to push them in (there are other inserts more optimised for press-fit). To do that, I just pushed them over the soldering iron

    (set to a temperature which results in the plastic gently melting, not too rapidly, so that you have time to position it correctly. It will slowly melt

    into the hole, and then just pull out the iron.

  • in reply to shabaz

    Great find

    Looking at the options it seems these are designed as a push in version.

     

    M3 Brass InsertM3 Brass Insert

     

    Well done Enrico .. I do like the fake wood grain.

    Mark

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