ndoornekamp/senseair_s8

Python module for reading CO2 concentration from a Senseair S8 sensor connected to a Raspberry Pi

senseair_s8's Issues

add pyserial as requirement

sth. like adding the following line to your setup.py:

install_requires=['pysrial'],

Sensor read command reads wrong register from sensor and can occasionally return invalid data.

The command used to talk to the S8 sensor looks to be reading an undocumented internal address on the sensor rather than the output data register. This can cause the returned value to occasionally contain an invalid value (In my case occasionally reporting ~16000).

When debugging I found some useful documentation at https://forum.airgradient.com/t/where-can-i-find-the-s8-documentation/292/5 where it lists the correct modbus command for reading the CO2 value as 0XFE, 0X04, 0X00, 0X03, 0X00, 0X01, 0XD5, 0XC5 (read 1 value from input register 3)

CircuitPython?

Hello,

Before I give it a shot… any chance the module can be used in CircuitPython?

Thank you.