A Rugged Low-Cost Fractal Optical User Interface

[rgsparber]

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.

Thanks,

Rick

[DIYer]

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:

Battery Charge Indicator by rgsparber

tags: battery, LED, electronics