[TriEmbed] TriEmbed Digest, Vol 20, Issue 11

[Martin Brooke]

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/20150114/3b94fc9d/attachment.htm>