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Thread: A Rugged Low-Cost Fractal Optical User Interface

  1. #1
    Supporting Member rgsparber's Avatar
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    Nov 2012
    Phoenix, AZ
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    rgsparber's Tools

    A Rugged Low-Cost Fractal Optical User Interface

    For many months, I've been thinking about how to display the battery charge level on my eBike. As I lived with past iterations, I have refined what I want. This is a classic case of "I'll know what I want when you give me what I asked for."

    This new design displays all integers from 0 to 9, is very rugged, costs under $1, can be read at a glance even in full sunlight, and draws about 1 milliamp. It has a two-wire interface and is easily driven by an Arduino compatible ATtiny85 with very little code.

    If you are interested, please, click here.

    Your comments are welcome. All of us are smarter than any one of us.



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  2. The Following 3 Users Say Thank You to rgsparber For This Useful Post:

    Jon (Jul 30, 2021), NortonDommi (Jul 30, 2021), Sleykin (Jul 31, 2021)

  3. #2
    Content Editor
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    Aug 2013
    Thanked 1,582 Times in 1,419 Posts

    Thanks rgsparber! We've added your Battery Charge Indicator to our Electronics category,
    as well as to your builder page: rgsparber's Homemade Tools. Your receipt:

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