Update on bad egg NO2 data

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Damon Rand

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Apr 23, 2013, 11:43:05 AM4/23/13
to IoT Bristol
Hi everyone,

I've been watching and waiting for some progress from the egg team and
we've had some now, a series of blogposts from Victor at Wicked
devices has come out recently..

The first points out that the NO2 sensor when built from scratch using
the manufacturers reference circuit works perfectly, but in the egg
performs poorly, then goes on to isolate the issue down to the eggs
heater control algorithm..
http://blog.wickeddevice.com/?p=423

The latest post says that there is a version on github with simpler
heater controls for better readings. It also provides a patch that
should 'centre' the eggs NO2 readings so they don't hit the ceiling or
the floor. And he has identified a hardware bug that was also going to
be throwing the NO2 readings off.
http://blog.wickeddevice.com/?p=428

In short, NO2 should be a lot better now. I'm upgrading some eggs this
afternoon and will report back in a week or so to let you know if its
helped!

Cheers,
Damon.


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Damon Rand
Head of Product Design
Clean Energy Prospector

tel: +44.2071930914
tel: +64.48890122
mobile: +44 7887682995
twitter: @ceprouk
skype: damonatceprouk
http://www.cleanenergyprospector.com

Paul Masri

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Apr 25, 2013, 1:03:12 PM4/25/13
to iotbr...@googlegroups.com
Thanks for the update Damon. When you've got that confirmed, I think I'll schedule a time to get updated and collect the egg-shells.
Cheers,
Paul.



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