Netduino home hardware projects downloads community

Jump to content


The Netduino forums have been replaced by new forums at community.wildernesslabs.co. This site has been preserved for archival purposes only and the ability to make new accounts or posts has been turned off.
Photo

Power through 5V pin?


  • Please log in to reply
2 replies to this topic

#1 fluke

fluke

    New Member

  • Members
  • Pip
  • 9 posts

Posted 22 February 2011 - 09:30 PM

I've managed to have some success powering the Netduino using only 5V into the 5V pin. However, this is causing some problems on the Netduino Plus with a custom shield I made. What are the limitations of supplying power in this manner?

#2 Luke

Luke

    Member

  • Members
  • PipPip
  • 18 posts

Posted 22 February 2011 - 09:41 PM

This should be fine, and is similar to what's happening when you power via USB. If your shield is using the Vin pin though, it's not going to be getting power. You will also be bypassing the reverse polarity protection that the barrel power connector has and USB power might try charge something that's connected to +5V. Chris Walker might chime in with more thoughts. The schematic is here if you want to take a look at how the power is routed: http://www.netduino....s/schematic.pdf

#3 Chris Walker

Chris Walker

    Secret Labs Staff

  • Moderators
  • 7767 posts
  • LocationNew York, NY

Posted 25 February 2011 - 01:53 AM

I've managed to have some success powering the Netduino using only 5V into the 5V pin. However, this is causing some problems on the Netduino Plus with a custom shield I made.

What are the limitations of supplying power in this manner?


You can power the Netduino using regulated 5V power on the 5VDC pin, and it should work exactly the same way as if you supplied unregulated 7.5VDC - 12VDC power to the power barrel or VIN pin header.

Please keep the following in mind:
  • You need to supply regulated 5V power to the 5V pin. Most AC-DC power bricks are unregulated.
  • As Luke mentioned, the 5V pin does not have reverse polarity protection. So be careful with your wiring.

BTW it's technically possible to power the Netduino via 3.3V regulated power on its 3.3V header too, although we don't officially support that (and your white/blue LEDs will be pretty dim).

Chris




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

home    hardware    projects    downloads    community    where to buy    contact Copyright © 2016 Wilderness Labs Inc.  |  Legal   |   CC BY-SA
This webpage is licensed under a Creative Commons Attribution-ShareAlike License.