https://github.com/RigacciOrg/AirPi

A monitoring station for air quality based on Raspberry Pi
https://github.com/RigacciOrg/AirPi

pollution pollution-levels python raspberry-pi sensors

Last synced: 10 months ago
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A monitoring station for air quality based on Raspberry Pi

• Host: GitHub
• URL: https://github.com/RigacciOrg/AirPi
• Owner: RigacciOrg
• License: gpl-3.0
• Created: 2017-01-02T22:49:44.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2019-01-30T15:24:47.000Z (almost 7 years ago)
• Last Synced: 2024-10-29T23:54:37.178Z (about 1 year ago)
• Topics: pollution, pollution-levels, python, raspberry-pi, sensors
• Language: PHP
• Size: 1.3 MB
• Stars: 23
• Watchers: 4
• Forks: 15
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# AirPi: air quality station with the Raspberry Pi and the PM5003 sensor

https://www.rigacci.org/wiki/doku.php/doc/appunti/hardware/raspberrypi_air

A monitoring station for air quality based on the Raspberry Pi

## pms5003

The **lib/pms5003** is a Python script to read data from the 

PMS5003 particulate matter sensor by Plantower. It uses the 

serial line. It is rather complicated because it has all the 

following features:

* Handle sleep-down and awake of the sensor.

* Wait some time before read, allow the sensor to settle.

* Multiple read with average calculation.

* Verify data checksum.

* Handle communication errors.

* Single read or endless loop.

* Write data to status file (STATUS_FILE).

* Log to stdout/file/syslog.

The **Single Read Mode** is suitable for a cronjob: set 

SLEEP_BETWEEN_READS to -1. The sensor will be awakened before 

the reading, and it will be put at sleep before program exit.

For the **Endless Loop Mode** set SLEEP_BETWEEN_READS to the 

acquiring interval (seconds). If the interval is greather than 

three times the sensor's settling time, the sensor will be put 

to sleep before the next read.