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Topic: Arduino Nano 3.3v Pin? (Read 403 times) previous topic - next topic

dprefont

What is the purpose of the 3.3v pin on the Nano? I am currently using it to power a Nokia 5110 but I'm uncertain of the mA current limits for the pin. Can someone please help? the AT328 Atmel manual did not help.
Thanks.

Robin2

The specs for the Uno say you can draw 50mA from the 3.3v pin but there is no equivalent data for the Nano.

The 3.3v output is not part of the Atmega 328 - it is provided by a separate onboard voltage regulator.

...R
Two or three hours spent thinking and reading documentation solves most programming problems.

dprefont

Ok, thanks. I'll use a 4050 between the Nano and Nokia 5110, both powered by the 3v Nano pin, and see what happens.

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