Seen it, witnessed it, mopped up the debris after it happened (i.e. replaced SMD components elsewhere on affected PCB's). It's one of the several reasons why it's NOT a good idea to operate components at their limits.
Another very good reason is that there's just no necessity to do so.
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And that's why we use buck converters and other robust components.
Regulators have their place, but I think a lot of designs allow them to be overtaxed to easily and people don't know better.
Just overbuild it a bit and you're good to go. I'm still pretty early in my learning but I'm leaning towards extra safety in my designs so far.
That's it. Nothing wrong with a healthy 50-75% safety limit in most cases. Unless there's a very clear and significant penalty, but for 90% of the components this is not the case.
Sorry for replying after 7 days. Been busy.
So for update:
-The uno still works. I've plugged several components into uno and it works just fine, so its only the heat that's been a concern, in which case, I been limiting on how long I'm powering it. It's not really an efficient safety measure but it's something to start with. Other than that, code still gets uploaded, components still receive data and the uno still provide power.
-As for the servo, I'm not exactly touching it until I have boards to spare in case it goes wrong and/or I have a project in mind for it. In any case, I'm buying some more parts and boards, like a nano (not sure which variation yet) for some small project, a mega for making a 3D printer as a fun project, and a genuine arduino uno this time. I have these sold locally and I don't really feel safe with sites like aliexpress.
Awesome! If you want to use servos, try using an external source of 12V power with l7805cv voltage regulators.
The breadboard PSU is not a permanent solution.
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Why not straight away a decent 5V power supply?
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Not everyone can afford a bench power supply.
If you are referring to the "metal box" devices with terminals out the bottom, I'm not familiar with those, so I didn't suggest them.
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I just got a 5V 8A power supply with a barrel jack on Amazon for $15.
Looks like a laptop power supply.
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Just suggesting what works for me.
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Another update: so I tried the servo motor again. I was convinced I did something wrong so I tried again. I kept going around and they all pretty much did the same thing with the same wiring so I took the risk. Aaaaaaand it worked! The sweep and knob worked pretty fine actually. That actually got me pretty confident but also taught me to double check my wiring at all times, even if its simple wiring. In any case, I'm quite happy
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