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From: Henrik Volkers on 4 May 2007 09:10
Andrew, meiling,
information about the sensirion sensors moduls can be found here:
<a href="http://www.sensirion.com/en/02_sensors/03_humidity/00_humidity_temperature_sensor/05_humidity_sensor_sht71.htm" target="_blank">http://www.sensirion.com/en/02_sensors/03_humidity/00_humidity_temperature_sensor/05_humidity_sensor_sht71.htm</a>
Output is a digital datastream, that can be read via DIO lines. Since the communication protocol includes a CRC mechanism digital read errors can be avoided. I hadn't looked into the provided vis, if the CRC is used....
One reason for the temp. drift might be the build in heating resistor to dry&nbsp;a drown humidity sensor, make shure it's turned OFF :smileywink:
&nbsp;And it's recommended that the sensor is turned of between measurements to avoid selfheating.
&nbsp;Message Edited by Henrik Volkers on 05-04-2007 02:56 PM
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