Re: Nano on-board regulator...was: I made a mistake
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David KB4FXC
Regardless of what has been said about the on-board regulator being questionable, it is a pretty
standard 3-terminal regulator it is usually good for at least 100 ma.? I have used a couple dozen
of the Asian manufactured NANO boards with +13.6 volts input and they all worked just fine.??
I suspect that your concern about exceeding current limits may be valid though because there is
no heat sink on those on-board regulators.? Most of my Arduino based test equipment uses the
on-board regulator for NANO and an attached LCD.? Other circuitry is powered from a 7805L or
higher current capable 7805 equivalent.?
There is a lot of not-invented-here and not-manufactured-here sentiment among the ham radio
fraternity.? Some of it justified and some is just myth and FUD (Fear, Uncertainty, and Doubt).
Arv? K7HKL
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On Sun, Oct 22, 2017 at 3:11 PM, David McGough <kb4fxc@...> wrote: Hi Dale,
I'm designing a NANO project right now that uses the on-board regulator at about +12v input. I'm only powering the atmega328p chip and? 6 digital outputs, consisting of low-current LEDs/opto-isolators. I've had no problems, so far, with a random sampling of about a dozen cheapo boards....My max current draw is perhaps 25mA. How much current were you drawing from the regulator where it popped??
....Now I'm concerned that I may need to consider an external regulator.
Thanks,
73, David KB4FXC
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