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 Post subject: A data buffering project
PostPosted: Fri Dec 02, 2011 1:05 pm 
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Joined: Fri Sep 09, 2011 10:13 am
Posts: 20
Location: Cambridge, England
I've recently been coding up a project on an mBed processor to buffer the serial data put out by the device into an SD card for later reading.

You can read more about it here if you're interested:
http://frugal-coder.blogspot.com/2011/12/currentcost-meter-updates.html


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PostPosted: Fri Dec 02, 2011 11:21 pm 
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Joined: Mon Apr 18, 2011 5:26 pm
Posts: 138
Location: Melbourne, Australia
WieserSoftwareLtd wrote:
You can read more about it here if you're interested:
http://frugal-coder.blogspot.com/2011/12/currentcost-meter-updates.html

Good article. I hope to emulate you some day.

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PostPosted: Sun Dec 04, 2011 3:03 am 
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Joined: Fri Jun 03, 2011 11:12 pm
Posts: 38
Location: UK
Nice idea!

You could probably eliminate that second DC adapter by taking a source of power directly from the Envi.

There are two positive power connections on the RJ-45 one is regulated and the other non regulated, so effectively a direct connection to the existing Envi power adapter.

The regulated output, may not be able to supply enough current to power your circuit as it's quite a small SMT device but the unregulated output would probably be more than enough to power an MCU and an SD card.

It would also make it a simple and neat affair to just plug a single RJ-45 in and have no additional wiring.

I'm sure the existing power adapter could handle the extra few miliamps you will need without it causing any major problems.


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