Open kevinjwalters opened 2 weeks ago
BTW, where's best place to ask about UNO R3 datasheet?
2.2 Power Consumption
only has an xx
entry for Maximum Power Consumption
Description
column entries should lose the word "Maximum" as there's already a Max
column and it doesn't make sense for Min
and Typ
?Min
voltage for Maximum input voltage from USB connector
is blank.
Powering Alternatives for Arduino Boards fills a gap that's been around for a while, it's very useful document. I've been researching how much power the
5V
pin on an Arduino UNO R3 can supply and I've only just discovered it.A few questions:
3V3
is documented as "MAXIMUM current per +3.3V pin is 50mA" (not 150mA) in the pinout;5V
current is going to be more like 1000mA - board-use-including-3V3-regulator - current-that-cannot-be-used-due-to-over-heating - it will also be limited to 500mA (or a lower conservative value) for USB powering due to the polyfuse.I'll mention @futureshocked in case he's interested as he's written an article in this area.