How to Read Settings

Watch everything:

$ mosquitto_sub -t /house/#

Watch settings:

$ mosquitto_sub -t /house/heating/state/#

How to Change Settings

Test:

$ mosquitto_pub -t /house/heating/settings/test -m 2

a*x + b:

$ mosquitto_pub -t /house/heating/settings/a -m ...
$ mosquitto_pub -t /house/heating/settings/b -m ...