Projector Is on (feedback) join

Screen: Room Devices — a room's TV & audio card, Projector box — the Action / Type / Join table.

What it is

The Is on (feedback) box: the digital join that says whether the projector is really on. Optional.

What to enter

Type the feedback join, or leave 0 if there is none.

The box turns red and refuses a number above the processor's digital limit. A number already used on that processor opens a box with Cancel pick another and Use it anyway.

What it changes

In the house: The project saves it as you type. At the next Save & Deploy the app reads it to show the projector's real on/off state.

In the app: Without it, the app shows the last command sent, as for any one-way device.

If it goes wrong

• A wrong join: the app shows the wrong on/off state.