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Now playing with e-ink displays. A few hours of soldering and staring at wiring charts later, I decided to be vain.
The goal of this experiment is to display some data graphs, but might as well have some fun with it first.
(Image credit Falvie, from a really long time ago.)
tech, tiny computer
And we now have a solar-powered computer, tracking solar power and energy usage for the whole house.
tech, tiny computer
For those interested in building their own, this is:
* One Raspberry Pi Zero W. I used the Vilros starter kit (~$35)
* One Waveshare 4.2 inch e-ink display ($10-40 depending on wholesale rates)
* One HI-S025 solar charger (~$40)
The thing is wireless and can do USB and HDMI too, which is just crazy.
tech, tiny computer
(The Nordic Thingy is not part of the build, by the way. The entire computer is hidden under the solar panels, since it's about the size of a Tic Tac container once it had its tiny heatsink and GPIO pins installed.)
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I used Cacti for graph generation, and the software was all FOSS as far as I'm aware.
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“Siri, what does DST ending feel like to a computer?”
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@Goldkin Ooh, spiffy! Now to replace the fonts with bitmaps. =:)
@Goldkin What exactly... happened? That seems a bigger spike than necessary for say, just writing extra input to the same hour...
@Taylor All of the old 1-2am information got written to the new 2am when clocks rolled back one hour, because that’s how this particular time series handled going back in time.
tech, tiny computer
Update: it’s still running a few days later: