• 40 face dome draft

    programagor08/12/2021 at 04:20 0 comments

    We modelled a geodesic dome in Blender, and found a continuous strip of triangles that doesn't intersect itself when laid out flat. The whole thing was designed to fit a Raspberry Pi Zero W, with room for powering it with a USB plug.

    Plastic armature in white, Flex PCB in yellow

    The circuit board was then designed from this shape, using KiCad. We also played with Eremex TopoR (topological autorouter) to get the shortest possible distance of traces conecting the LEDs.

    Flex PCB with traces laid out

    It is only now that we realised that most fab houses charge for rectangular space used. Clearly our design is very inefficient in this regard, being full of empty, wasted space. This realisation occurred only AFTER we sent the armature for printing, so here is what it might have looked like:

  • Initial design ideas

    programagor06/25/2021 at 01:22 0 comments

    Let's create something simple, that I could actually feasibly make, without delving into the long and daunting journey of full on product design. I have a rough idea of what it is that I want: a thingamabob that will simulate the sunrise sequence, to help me wake up fresh.

    To put it in more concrete terms, I require:

    • An omnidirectional light source,
    • that can change colours,
    • and has configurable wake up times,
    • ideally through an app or a web interface

    I know I can simply buy one of many off-the-shelf products that do this exact thing, but where would be the fun in that?

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