tech, tiny computer 

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 

Update: it’s still running a few days later:

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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tech, tiny computer 

I used Cacti for graph generation, and the software was all FOSS as far as I'm aware.

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