Dynamic fan speed controlled by CO2 Measurements

[rossko57]

@jonatanhovgaard

How can I strip out “ppm” from the returned string/value?

You don’t need to do that, you can more meaningfully compare your reading with a threshold also in ppm

Working with Number:Temperature Items in rules

openHAB provides Quantity Type features, which can seem baffling. On top of that, Temperature type Quantities have a few quirks all of their own. These notes intend to guide the rules author. I’ve shown work examples in DSL rules language, see below for other scripts examples. All have similar features, if different syntax. Knowing what can be done is half the battle. What is a Quantity Type? Simply, Item states and rule variables may contain Quantities - that just means a number AND a unit …

What are the sleeps supposed to achieve? Neither the captured reading nor the threshold can change in that time.