Dnia 27.02.2012 o 23:58 Mick Sulley <m...@sulley.info> Mick Sulley <m...@sulley.info> napisał(a):
> The 4 DS18S20's read 18.3125, 18.625, 18.675 and 18.125, so all within > half a degree. I was wondering if this error is persistent? If I put all my sensors in one place take readings and calculate each sensor's deviation from average. Will this deviation be the same over time and in different places? > The Humidity sensor box has a built in DS18S20 which reads 22.25 and > also the humidity sensor itself has a temperature register which reads > 23.5. > It seems odd to me that although the 4 separate sensor agree, both the > temperature readings in the humidity sensor are several degrees higher. > Any ideas why this should happen? Maybe the voltage regulator generates some heat and transfers it through the copper paths in the board? Unplug the sensor for ~15 min. and then plug it and quickly take readings. Maybe your desk lamp heats up the sensor? -- p4trykx ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
