Ambient
Air Quality
Activity Log
nothing logged yet ദ്ദി◝ ⩊ ◜)
nothing logged yet ദ്ദി◝ ⩊ ◜)
Data is uploaded from my Pimoroni Enviro+ sensor array and a PMS5003 particulate sensor connected to my Raspberry Pi 5. These are stationed on a 5' bookshelf in my room!
Gas levels are measured in Ohms in the Pimoroni Enviro+, so I have to convert them into micrograms per cubic meter. Gas and particulate matter data are processed using EWMA (exponentially weighted moving average) to filter out jitter but still being responsive!
The system uses the EWMA baseline to monitor rises in PM2.5 and PM10. If they deviate significantly from the moving average then the system auto-logs a "spike event", which usually tells me I've been burning a candle or incense stick for too long. . . I can also log events myself like when I open my window or light my candle to see how that impacts the environment in my room!