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Commonly grounding your circuit


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#1 Daniel Minnaar

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Posted 24 July 2012 - 03:17 PM

Hi, Since I've used a Netduino in a few projects, I've found that I can always group my ground pins to the same wire. In some instances I've found I can group my negatives, too. I'm trying to figure out why, and when this is a good/bad idea. When this is acceptable, does it always have to be the same supply voltage/current? What are the rules behind this? Thank you!

#2 Stefan

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Posted 24 July 2012 - 03:23 PM

Hi Reactive, You're question is quite simular to this one: http://forums.netdui...-work-reliably/ I think Mario his explaination on this thread is a very good one. Or at least, I did understand it :)
"Fact that I'm a moderator doesn't make me an expert in things." Stefan, the eternal newb!
My .NETMF projects: .NETMF Toolbox / Gadgeteer Light / Some PCB designs

#3 Mario Vernari

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Posted 25 July 2012 - 04:43 AM

Thanks Stefan.
Although it is not strictly related to this topic, here are a series of articles regarding SPI, grouding, and else that worth a read. Should be moved to some Wiki section?
Also many thanks for Pete Brown reporting the first link.

Interface, Happy or Sad Face?
http://www.maxim-ic....dex.mvp/id/5139

Well Grounded, Digital Is Analog
http://www.maxim-ic....dex.mvp/id/4345

Reduce the Chances of Human Error: Part 1, Power and Ground
http://www.maxim-ic....dex.mvp/id/4992

Where Is Ground?
http://www.maxim-ic....dex.mvp/id/4292

SPI/I²C Bus Lines Control Multiple Peripherals
http://www.maxim-ic....dex.mvp/id/4024

Introduction to I²C and SPI protocols
http://www.byteparad...-protocols.html

Hope they help.
Cheers
Biggest fault of Netduino? It runs by electricity.




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