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Comment by Uehreka | Hacker News Reader

OK then, grab a Raspberry Pi 3B, 4B and Zero, pop open these docs for config.txt, and try and figure out how far you can push each of these tiny machines: https://www.elinux.org/RPiconfig

Really though, the RPi's config.txt is exactly this kind of rabbit hole. I just got a Zero W today and now I'm thinking about if it's possible to underclock it enough to power it with a lemon battery via GPIO.

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I have more fun with Arduino type boards than RPis. For me, RPis are just fun to see where you can put a little computer, but I like all of the soldering, bread boarding, wiring, etc of the various shields in the Arduino realm. I get the best of both worlds with the analog/digital inputs, plus the programming in a very limited (requires some creativity) fooprint type of challenge. I haven't messed with the GPIOs on a RPi though, but now we're back to just programming in whatever unsconstrained/unrestricted way of a desktop. ??? we all like different things.

The downside of embedded system is it eventually turns into enterprise hardware. A RPi is just a small cheap PC now.

If you don't step away from it everything eventually becomes enterprise software.

It ever wasn't?

It used to have significantly more performance problems, but it's always followed the basic form of "tiny PC with IO pins and overbearing GPU".

If you do the latter, will you please write about it and share here?

That was a joke. Was.

According to this video I’d need a wall of lemons to get 5V with support for 300mA of current: https://youtu.be/a1D-fZP8qJk?t=205

So it may take some... adjustments... to get something like this to work, but I’ll see what I can do.

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