Add previousHeaterState to input and output

add prevDryBicartState to input and output.

Add prevBalChamberState to input and output

Add isBalChamberSwitchingActive to input

Align it with declration.

Add comments.

Looks On event handled later. One event should be fine for On condtion.

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prevDryBicartState

I guess, you should use OnOff status as second argument, since isBalChamberSwitchingActive varirable set after this function, it won't have latest status.

prevBalChamberState?

Should we also send an event when we start the heater?

We can combine all these condition checks in a single if() at line 423 separated by || and then we can send the event change in one line.
The code will still work if we remove the first condition check for prevState from line 427 and 431

fixed thanks

Should we change msg ID from speed to rate?

fixed thanks

its a speed in rpm. updated function to convert target rate in ml/min to target speed in rpm and use that for the difference.

fixed thanks

this is a set speed in rpm

this is speed in rpm

fixed thanks