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Problem with SHT75 Humidity/Temperature Sensor

S

Sensorboy

Jan 1, 1970
0
Hello Sir,

I am using a SHT75 humidity sensor. I am interfacing SHT75 with the
MSP4301232 Microcontroller. The problem I am facing is - after writing the
control byte; the SHT75 does not acknowledge proper receipt of control
byte. I have verified the timings and found them to be good enough. I have
also tried connecting a pull up resistor for the data line, but the SHT75
does not drive the data line low.

I am sending you a snapshot of the CRO display without the pull-up
resistor. Here the data line is low after transmission of the control
byte, but the data line is low after the Microcontroller release the pin
and not by the sensor. I would appreciate if you could explain the problem
behind this.

Also, if you give me some idea of how I would test my Humidity sensor, I
would appreciate.

Regards,
Krishna
 

deyaya

Mar 28, 2010
1
Joined
Mar 28, 2010
Messages
1
Dear Krishna ,

I have the same project for my final diploma at University " Politehnica" in Bukarest. Could you be so kind to help me and provide me the schematic ?

Many thanks in advance,

Deyaya
 
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