I’ll need to check my notes on power consumption. I’ve spent quite a bit of time trying out different modes and configurations… it’s not great. I would not expect years at all. You gotta be very careful about what has to stay on and off.

Furthermore, bugs. To this time there’s random crashes that happen with sleep which limits their use

I have some relevant experience. I built this a few years ago:

https://imgur.com/a/diy-automatic-e-ink-newspaper-using-rust...

After careful optimization, the v1 got about 6 months out of a 1100 mAh battery. Later improvements and bumping to a 3300 mAh battery got me to 14 months, before my kid yanked it off the wall, total'd the panel and I rebuilt it. The test continues.

That said--op isn't wrong. If power usage is the metric you optimize for, there's much better BOM than an esp32.

The value of electricity is extremely time dependent. You can easily overproduce solar power for your house during the day fairly cheaply. However batteries + gas generators for cloudy day quickly make the cost significantly higher.

The grid gives you expensive guarantees about reliability. Just giving power does not do that.

Citation needed.

Edit: it’s absolutely not true universally and it’s ridiculous to suggest it is. Comparing averages will be very tricky as well.

Sure - https://sticerd.lse.ac.uk/dps/case/cr/CASEreport57.pdf The difference between bottom and top decile is huge - bottom has approximately 12 hours more of free time a week! It’s consistent result that’s replicated multiple times in literature.

It's astounding how easily people here swallowed the ~opposite claim -- that low income people can't find 30 minutes of leisure time, versus how they howl and object to yours. Even after you provide evidence, something never demanded or provided of the first claim.

> cheap buck from 40~80V to e.g. 5V.

That’s not a cheap buck lol. Order of magnitude more expensive then 12v not even mentioning capacitors that can withstand 80v is $$$ and your derating goes to shit

I thought x64 was better for perf per watt just because perf is so much better

I’d go a step further and say get a mini pc unless you need gpio

With a miniPC you can always use a Raspberry Pico (or Arduino that supports Device Mode) for your GPIOs.

China is coming online :(

Why the sad smily? I'm pretty happy Chinese tech is stepping up to break the current memory cartel.

I keep making the same mistake. How do you make intermediary planes?

Normally, I select a face and add a datum plane. It's button is in the toolbar with a the datum point and datum line buttons in light blue iirc.

That said, since v1.0, I've had far fewer instances of being affected, and have started doing some direct-on-face features (usually sketches) again.

This is described in the wiki page, at the section solution.

Isn’t that less efficient in power and can have different color?

It has to be an SMPSU in constant current mode, not a linear power supply. I'm sure it does still affect the colour, though.

It’s because building 500 units would be a non starter for many of them