nova_fitness_sds011

• Script in Python3.6 for air quality sensor (Nova Fitness SDS011, SDS018), save data in .CSV file or push to MQTT server
• the script works with Python3.6 without modifying print or any Python3 (have to modify print)
• work with SDS011 and SDS18. These are sensors measuring coarse and fine susppended particulate matter in the air (PM2.5, PM10) using light-scattering method.
• to run the script, check the USB port. In linux, the port can be found by ls /dev/ttyUSB*
• run python3.6 runfile.py 0

config

in the runfile, scroll to near the bottom,

    while True:
        schedule(snapTime=60, push_mqtt=True)

• flag push_mqtt=True by defaut. So the line about could be simplify as:

     while True:
            schedule(snapTime=60)

and only necessary when you don't to push data to MQTT server as:

    while True:
        schedule(snapTime=60, push_mqtt=False)

• You could change snapTime to anyvalue. This is the time the sensor sleeping in second.

• Before measursing, the script turns on the fan for 30 seconds to purge out the old air

• change run mode (active == fan is always on, and passive == fan is off for certain about of time)

     run_mode(passive=True)  # continuous (active) running, change to passive=False

here is what looks like in CLI:

The CSV file stored data locally

CSV file

if the MQTT is enabled through the flag push_mqtt=True, here is the data in the server

Credit

this script was built upon the core module by ikalchev. The repo is linked here

##TODO

• add datasheet
• some photo about SDS011