Trouble driving the Sensirion SHT11 Temp/Humidity Sensor on Propeller

propwell

Hi folks,

i finally got the SHT11 and connected it to the Propeller. On the data line, i've got an 10k-Pull-Up-Resisotr.
The VDD-Voltage is 3,3V as used on the Propeller. I want to send the measured data via the SerialMirror.spin-Object, but all i get is very strange results.
They jump around with no sense!
I use the Sensirion-Object from the Object Exchange.
If is try "sm.tx("a")", i get the "a" totally correct, so i don't think it's a problem with my transmission.
Don't know, could it be a problem of senden the 14-bit signal? I'm very confused!

Thank you for your help,

Max

StefanL38

did you try the file SensirionDemo.spin?

without your code and schematic it is hard to analyse what is wrong.

see attached picture for attaching zip-archived code to a posting.

best regards

Stefan

propwell

Hi Stefan,

thanks for your answer. Attached is my project.
I've got the Data-Pin (Pin 2 of the SHT11) connected to Pin0 (Propeller) with a 10k-Pull-Up to 3,3V and Pin3 of SHT11 connected to Pin 1 Propeller!

Thank you very much!

Max

Franklin

Did you try the file SensirionDemo.spin? You need to test the setup with a simple program first before you complicate it with your own code. Run the file and make sure it works.

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- Stephen