X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f X-Recipient: geda-user AT delorie DOT com X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.98.4 at av01.lsn.net Message-ID: <54F88BAE.3040606@ecosensory.com> Date: Thu, 05 Mar 2015 11:00:30 -0600 From: John Griessen User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.4.0 MIME-Version: 1.0 To: geda-user AT delorie DOT com Subject: Re: [geda-user] [OT] Temperature sensor and control recommendation References: <201503051621 DOT t25GL09H018380 AT envy DOT delorie DOT com> In-Reply-To: <201503051621.t25GL09H018380@envy.delorie.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit 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.