[TriEmbed] TriEmbed Digest, Vol 20, Issue 11

[Dwight Morgan]

Thanks Martin!

 

That clears up the part of how to get the current signal processed from the clamp-on. I would have to study it more to make it work but I get the idea. The components are reasonably priced also. I don’t think I’m ready to tackle it with WiFi but it’s something to think about. 

 

Dwight

 

From: Martin Brooke [mailto:martin.brooke at duke.edu] 
Sent: Wednesday, January 14, 2015 9:49 PM
To: Dwight Morgan
Cc: TriEmbed Discussion
Subject: Re: [TriEmbed] TriEmbed Digest, Vol 20, Issue 11

 

I used an audio jack breakout on an arduino proto shield with a simple RC circuit to level shift the AC.

 

here is a photo <https://drive.google.com/file/d/0B0lP-6BNGel_a09EbFBkeDJWamc/view?usp=sharing> .  The proto shield is this one from  sain smart <http://smile.amazon.com/SainSmart-Prototyping-Prototype-Breadboard-Arduino/dp/B0079WI2MK/ref=sr_1_4?ie=UTF8&qid=1421289842&sr=8-4&keywords=Prototype+Shield>   although there are many alternatives for this.

 

The break out was from sparkfun <https://www.sparkfun.com/products/10588>   for which you need some headers  <https://www.sparkfun.com/products/116> and the jack <https://www.sparkfun.com/products/8032>   maybe you can find one assembled 

 

There is also two resistors and a capacitor needed to get the AC signal into the ADCs input range.

 

I really just copied the circuit from this intructable <http://www.instructables.com/id/Yun-based-Electricity-Monitor-with-Cloud-Support-T/?ALLSTEPS> . 

 

The instructable goes way further, using an Arduino Yun to make it readable via wifi, very cool, but maybe beyond what you want or need.

 

Cheers,

 

​​

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.triembed.org/pipermail/triembed_triembed.org/attachments/20150114/d361f661/attachment.htm>