 | | homebrew Temp sensor —Kevin A. Saddi
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| | | Sorry if this is old news guys, but I finally got my temp sensor working! But I was wondering how I can keep the value from jumping around. I used one of those sensitive thermistors that you can order through Mouser Electronics. (26 years ago, 4-Jan-99, to lugnet.robotics)
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| | | | | Re: homebrew Temp sensor —Peter Hesketh
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| | | | In article <36901A0A.6B212D89@gte.net>, Kevin A. Saddi <ksaddi@gte.net> writes (...) Use a smoothing algorithm such as: SmoothValue = ( JumpyValue + K * SmoothValue ) / ( K + 1 ) where K is a smoothing constant, eg 10 or 100. The bigger the K, the (...) (26 years ago, 4-Jan-99, to lugnet.robotics)
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| | | | | | Re: homebrew Temp sensor —Michael Gasperi
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| | | | Put a capacitor in parallel with the thermister. Try at least 0.1 uF. You can not use electrolytic types. (...) (26 years ago, 4-Jan-99, to lugnet.robotics)
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| | | | | | Re: homebrew Temp sensor —Jasper Janssen
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| | | | (...) Hmm.. why no elco? that is, if you make sure you alway plug your sensor on in the same way, you should get a constant +ve and -ve... Mindstorms does use the standar measuring trick of having DC current run thru the resistor, right? Jasper (26 years ago, 23-Jan-99, to lugnet.robotics)
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| | | | | | Re: homebrew Temp sensor —Michael Gasperi
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| | | | Jasper Janssen wrote in message <36a914e5.172025205@...et.com>... (...) Right, you could use an electrolytic if you wanted to make sure you always plugged your sensor the right way. Many people who are in this group do not know the subtleties of (...) (26 years ago, 23-Jan-99, to lugnet.robotics)
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| | | | | | Re: homebrew Temp sensor —Jasper Janssen
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| | | | (...) I damn well know what an elco is, thank you, and, I've never seen one blow up from <12V.. they can get a bit hot, and make a little plop, but I've personally never seen them shower the room with shrapnel. Which of course, is not saying that (...) (26 years ago, 23-Jan-99, to lugnet.robotics)
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