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Greetings, I am putting some thought into purchasing the lego temperature sensor. I would like to use it to track and or control the incubation temperature of snake eggs during the next breeding season. It would be simple enough to develop a (...) (25 years ago, 12-Jul-99, to lugnet.robotics)
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| | Re: Sensor Reliability
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Not very accurate - perhaps within 2 or 3 degrees F. The display uses 0.1 degrees precision (either C or F), but the accuracy just isn't there. I've done a little experimentation, but nothing too rigorous. No problems so far. The calibration curve (...) (25 years ago, 13-Jul-99, to lugnet.robotics)
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You can try to build your own temperature sensor, and it costs much less that if you purchase it at Lego World Shop: (URL) Moffat <lego-robotics@crynwr.com> wrote in message news:F1C0175B5A2DD21...ech.com... (...) (25 years ago, 13-Jul-99, to lugnet.robotics)
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Chris <superpcer1@home.com> wrote in message news:FEsJBG.1J4@lugnet.com... (...) Thanks for the website plug. The price is right, but it won't be calibrated for either F or C. It seems the Radio Shack thermister has a little different (...) (25 years ago, 14-Jul-99, to lugnet.robotics)
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| | Re: Sensor Reliability
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(...) You can also get fairly good results from using boiling water and ice water for 100 C and 0 C respectively. It helps to put the ice water in a foam cup with a hole in the lid for the sensor, and leave it sit for a few minutes to give the water (...) (25 years ago, 14-Jul-99, to lugnet.robotics)
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(...) Don't boil your LEGO bricks. They start to get soft at 80 degrees Centigrade. For more information, read from the chronicles of Dr. Franzenstein: (URL) Robert Munafo (25 years ago, 14-Jul-99, to lugnet.robotics)
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(...) Indeed. I was thinking more of homebrew sensors. Of course, these need to be electrically insulated before dunking in liquids, to avoid false readings. Cheers, - Ben. ---...--- Ben Williamson benw@pobox.com (URL) you check the web site first?: (...) (25 years ago, 14-Jul-99, to lugnet.robotics)
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(...) And don't forget that the boiling point of water varies *significantly* with altitude above sea level. The higher up, the lower the boiling point. -SMQ Shawn Menninga smq@dwarfrune.com --=--=--=--=--=--=--...-=--=--=-- "Well I've wrestled with (...) (25 years ago, 15-Jul-99, to lugnet.robotics)
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| | Re: Sensor Reliability
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In lugnet.robotics, Dave Baum writes: [regarding the accuracy of the LEGO temperature sensor] (...) My recent experience with the rotation sensor led me to two conclusions: the RAW values measured by the RCX are significantly affected by both (...) (25 years ago, 7-Feb-00, to lugnet.robotics)
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| | Re: Sensor Reliability
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(...) plan (...) The reading is affected by wire length, because this introduces more capacitance in the equation. When the RCX switches off power, and takes a reading from the sensor, there is only a tiny period of time for the signal to stabilise (...) (25 years ago, 7-Feb-00, to lugnet.robotics)
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