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Humidity HS1101 sensor

 
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young



Joined: 24 Jun 2004
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Humidity HS1101 sensor
PostPosted: Tue Dec 21, 2004 3:47 pm     Reply with quote
I am using this sensor to measure humidity, however, I am getting very unstable Frequency output, I am using exactly the circuit that they provided in their datasheet. any suggestion that might improve the stability?

the following is the datasheet
http://www.humirel.com/product/fichier/HS1101-HS1100.pdf
PCM programmer



Joined: 06 Sep 2003
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PostPosted: Tue Dec 21, 2004 5:12 pm     Reply with quote
The data sheet shows different resistor and capacitor values,
based upon the manufacturer and part number of the 555 chip.
You need to verify that you are using the correct resistor (or capacitor)
values based upon that chart. If you're not, then it might be unstable.
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