0

I have an Arduino Uno. It has a 3.3v pin that I would like to use to power another module that requires 3.3v, and nothing more. If I power my Arduino Uno with a 9 volt battery, will this pin output 3.3v, or will it give more than that?

3
  • 1
    It will output 3.3V. What module do you want to power ? A sensor uses very little current, that won't be a problem.
    – Jot
    Oct 26, 2017 at 1:08
  • I am using an IMU sensor and an NRF radio. They both run on 3.3v. Oct 26, 2017 at 4:16
  • A (fake) nRF24L01+ ? I think they require not a large amount of current (only 10mA or 20mA or so), but I'm not sure. I will probably work.
    – Jot
    Oct 27, 2017 at 10:41

1 Answer 1

1

The 3.3v is regulated and will always output 3.3v if the device is powered on.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.