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jaques / sht21_python

Python library for reading data over i2c (tested on raspberry pi)
MIT License
34 stars 19 forks source link

sht 31 sensors #7

Open jimbowarrior opened 8 years ago

jimbowarrior commented 8 years ago

hello,

have you full code to read a SHT31 sensor ?

Thank you

jaques commented 8 years ago

Sadly not, as I don't have one to test, I'm not sure how much help I can be.. The data sheet is here: https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/Humidity_and_Temperature_Sensors/Sensirion_Humidity_and_Temperature_Sensors_SHT3x_Datasheet_digital.pdf.

Compared to sht21's here: http://www.farnell.com/datasheets/1780639.pdf

It looks much more sophisticated. Instead of just sending one byte, it looks like you need to send 3 (two bytes for the command, one CRC checksum). If you get something working, let me know and I can look to fold it in to this.

jimbowarrior commented 8 years ago

there are some source code with C++ her : https://github.com/adafruit/Adafruit_SHT31 And her https://github.com/jaques/sht21_python/issues/6 Nadanks provided some code ?

joecorsi commented 8 years ago

I can confirm the module written for the sht31 is functional. I am able to read temperature and humidity values from the sensor. Although I am getting some errors when turning the heater on and off as well as when doing a soft_reset.