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The Netduino forums have been replaced by new forums at community.wildernesslabs.co.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

What is the difference between Rev A and Rev B boards?

hardware revisions

  • Please log in to reply
4 replies to this topic

#1 NameOfTheDragon

NameOfTheDragon

    Advanced Member

  • Members
  • PipPipPip
  • 112 posts
  • LocationCanterbury, Kent, UK

Posted 15 January 2015 - 02:29 PM

I have just received a second Netduino Plus2 which I bought on eBay. It appears to be older than my existing board. The one I received is Rev. A while me existing unit is Rev. B

 

I can see that it uses a slightly different power connector but other than that, what are the differences?

Regards,

Tim



#2 Chris Walker

Chris Walker

    Secret Labs Staff

  • Moderators
  • 7767 posts
  • LocationNew York, NY

Posted 15 January 2015 - 10:47 PM

Hi Tim,

Netduino Plus 2 only has one revision, Rev. A.

If you got a Netduino Plus 1...

Netduino Plus 1 Rev. A uses the external AREF pin by default (for analog voltage voltage).

Netduino Plus 1 Rev. B uses an internal AREF (same as 3V3 header) by default, and offers a GPIO switch to enable the external AREF in case you need the external AREF.

We found that almost 0% of users ever wanted an AREF other than 3V3.

To make your Rev. A board work the same as a Rev. B board, simply connect a wire from 3V3 to AREF...and you'll be good to go.

BTW, there were very very few Rev. A boards.

Chris

#3 NameOfTheDragon

NameOfTheDragon

    Advanced Member

  • Members
  • PipPipPip
  • 112 posts
  • LocationCanterbury, Kent, UK

Posted 16 January 2015 - 04:47 AM

Chris, you're correct, I also have a Plus 1 and I was getting it mixed up with my Plus 2!! D'oh!

Thanks for spotting my deliberate mistake :rolleyes:

--Tim



#4 Chris Walker

Chris Walker

    Secret Labs Staff

  • Moderators
  • 7767 posts
  • LocationNew York, NY

Posted 16 January 2015 - 10:50 AM

Chris, you're correct, I also have a Plus 1 and I was getting it mixed up with my Plus 2!! D'oh!

I understand that issue; they do look like siblings, don't they? :)

In the factory we have hundreds of Netduinos at a time stacked on white (ESD) tables for the testing and packaging process. Because different Netduinos look so consistently alike, our factory policy is to only work with one board model per table at a time--lest Netduino Plus 1s accidentally get mixed in with Netduino Plus 2s, etc.

[More specifically the flash-and-test process would flag the almost-doppelganger; critically this process ensures that the right boards go in the correctly-labeled packages.]

I'm glad that you have an NP1 to keep your NP2 company :)

Chris

#5 Nevyn

Nevyn

    Advanced Member

  • Members
  • PipPipPip
  • 1072 posts
  • LocationNorth Yorkshire, UK

Posted 16 January 2015 - 12:51 PM

BTW, there were very very few Rev. A boards.

 

Does that mean they command a high price on eBay due to rarity value :D  ?  May sell mine... Wishful thinking I believe...

 

Mark


To be or not to be = 0xFF

 

Blogging about Netduino, .NET, STM8S and STM32 and generally waffling on about life

Follow @nevynuk on Twitter






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.