Skip to content

Python library for the Sensirion SCD30 co2, temperature, humidity sensor.

License

Notifications You must be signed in to change notification settings

arniebarni/scd30-needs-work

 
 

Folders and files

NameName
Last commit message
Last commit date

Latest commit

 

History

3 Commits
 
 
 
 
 
 
 
 
 
 

Repository files navigation

scd30

Python library for the Sensirion SCD30 co2, temperature, humidity sensor.

I2C Clock stretching

Master needs to support Clock Stretching up to 150ms. The default in Raspbian is too low, we have to increase it:

To set it, download from here:

https://github.com/raspihats/raspihats/tree/master/clk_stretch

Compile:

gcc -o i2c1_set_clkt_tout i2c1_set_clkt_tout.c
gcc -o i2c1_get_clkt_tout i2c1_get_clkt_tout.c

execute (add to /etc/rc.local to run on every boot):

./i2c1_set_clkt_tout 20000 # for 200ms

Thanks

I borrowed some code and ideas from these two repos:

https://github.com/UnravelTEC/Raspi-Driver-SCD30 (python code, i2c clock stretching) https://github.com/sparkfun/SparkFun_SCD30_Arduino_Library (code structure, commands)

About

Python library for the Sensirion SCD30 co2, temperature, humidity sensor.

Resources

License

Stars

Watchers

Forks

Releases

No releases published

Packages

No packages published

Languages

  • Python 100.0%