Difference: ASmallMeteorologicalStation (2 vs. 3)

Revision 32017-10-09 - uli

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META TOPICPARENT	name="TheUCCOpenDay"

A meteorological station.

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The small PCB on the left is the BMP180 temperature and atmospheric pressure sensor while the PCB, just left of the blue cobbler, is the DHT11

humidity and temperature sensor. Since the temperature measurement on the BMP180 is more precise than the one on the DHT11 we use this measurement for display and logging.

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The following plot shows the temperature and the humidity measured in the computer lab over a few days. One can clearly see that at the beginning of the measurement period the air conditioner had broken down and the temperature rose up to
30 °C while the humidity rose to 70%. The temperature drop which happened when the air conditioner was repaired is clearly visible.

... and the barometric pressure.

Uli Raich - 2017-10-06

Comments

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<--/commentPlugin-->

META FILEATTACHMENT	attachment="meteo.png" attr="" comment="" date="1507552729" name="meteo.png" path="meteo.png" size="1071065" user="uli" version="1"

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META FILEATTACHMENT	attachment="airPressure.png" attr="" comment="" date="1507563098" name="airPressure.png" path="airPressure.png" size="55228" user="uli" version="1"
META FILEATTACHMENT	attachment="tempHumi.png" attr="" comment="" date="1507563098" name="tempHumi.png" path="tempHumi.png" size="83937" user="uli" version="1"

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