Good instruction on building your own sensor here: https://sensor.community/en/sensors/airrohr/ https://sensor.community/en/sensors/airrohr/ As a bonus, the co

Good instruction on building your own sensor here: https://sensor.community/en/sensors/airrohr/ https://sensor.community/en/sensors/airrohr/ As a bonus, the collected data by the sensors.community project is public, and here is the walkthrough of data analysis with ClickHouse: https://clickhouse.com/docs/en/getting-started/example-datasets/environmental-sensors https://clickhouse.com/docs/en/getting-started/example-datas...