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Mail Archives: geda-user/2015/03/05/11:57:32

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Message-ID: <54F88BAE.3040606@ecosensory.com>
Date: Thu, 05 Mar 2015 11:00:30 -0600
From: John Griessen <john AT ecosensory DOT com>
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To: geda-user AT delorie DOT com
Subject: Re: [geda-user] [OT] Temperature sensor and control recommendation
References: <CAF3uCZ=G0FztqBtpfvssYCz9WrUORX8+J45xmH9+KutaX6c+gw AT mail DOT gmail DOT com> <201503051621 DOT t25GL09H018380 AT envy DOT delorie DOT com>
In-Reply-To: <201503051621.t25GL09H018380@envy.delorie.com>
Reply-To: geda-user AT delorie DOT com

On 03/05/2015 10:21 AM, DJ Delorie wrote:
> I use the same averaging trick on my thermostats to get 0.1F readings
> on a 1C-rated sensor.  If your sensor isn't noisy enough to use this
> trick, you can always add noise - you're basically building a 1-bit
> ADC.

The extra noise lets you explore the single bit crossings of your system statistically.
Then you get out of the trap of temperature varying, but not seen crossing single bits
of the system ADC.

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