Many rooms, one chip

Three rooms, three sensors, three heaters. Three chips would work, but every chip costs a housing, power and care. One chip is enough – if the names are well planned.

Same name, different type#

lbn and sbn filter by type and name. That is why sensor and heater in the lab may both be called “Labor”: the type hash decides which device is meant. That saves names and keeps the base tidy – every device carries the name of its room.

lbn temp SENSOR HASH("Labor") Temperature Average
sbn HEATER HASH("Labor") On on

The simple way: block by block#

The same three lines for every room, just with a different name. That is easy to read but costs three lines and a good 150 characters per room. With five rooms and a display per room it gets tight.

The name in a register#

HASH("Labor") is already a number when the code loads. That number may sit in a register too, and lbn/sbn take it from there:

move room HASH("Lager")
lbn temp SENSOR room Temperature Average
sbn HEATER room On on

That way you write the control part only once and swap the name beforehand.

One room per tick#

A counter picks the next room every tick: 0, 1, 2, 0, 1, 2 … With seq and select that becomes the name:

add nr nr 1
mod nr nr ROOMS              # 0, 1, 2, 0 ...
move room HASH("Labor")      # room 0
seq tmp nr 1
select room tmp HASH("Lager") room
seq tmp nr 2
select room tmp HASH("Wohnen") room

Every room gets its turn every three ticks, so every one and a half seconds. For heaters that is more than fast enough.