(weewx-NovaSDS01, a new WeeWX extension service for the Nova SDS011 Particulate Sensor

[Steeple Ian]

Features

• WeeWX 5.1 or later versions
• Query mode operation — polls the SDS011 sensor with proper sleep/wake cycles
• 60s read / 60s sleep cycle — extends sensor life by turning off fan during sleep
• Injects PM2.5 and PM10.0 into WeeWX loop packets (and archive)
• Writes particles.txt with latest readings for near realtime display
• Writes to WeeWX database wview_extended schema
• Atomic JSON file writes with proper www-data:www-data ownership
• Thread-safe operation — background thread manages sensor, main thread serves WeeWX
• Multiple samples per cycle — collects samples every 2 seconds during read period
• Fully configurable via weewx.conf
• Clean install/uninstall using the WeeWX extension system (weectl extension install https://github.com/Millardiang/weewx-NovaSDS011/archive/refs/heads/main.zip)  
• https://github.com/Millardiang/weewx-NovaSDS011/blob/main/README.md
  
  

[michael.k...@gmx.at]

Just out of interest: what are the requirements for the host hardware? An UART Interface? Will it work with an UART/USB Adapter?

[Ian Millard]

My SDS011 came complete with the UART/USB adapter. I am running WeeWX5.1 on a RaspberryPi5. The standard Pi5 power adapter copes with the SDS011 with ease.

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