Do you feel confident to write the PIC programme? It will be relatively simple & I can give you a flowchart to work from.
Yes, if you study the flowchart, you will see that the remote does turn the light on.
The light controller monitors the fan wire, so it knows whether the fan is on or off. EDIT, see below.
If you use a PIC, then you will be able to do it with three integrated circuits.
Alternatively, you can do it in hardware, but that will require five integrated circuits.
Moreover, I realised that we can use the simple SDL that I posted previously.
However, there is a minor improvement that can be made. I'll post a modified drawing later.
EDIT
You raised a good point. I have just realised what you meant.
It would be simpler to access the Fan status info from the Fan Controller. So if you can access the right point, then you will only need 2 integrated circuits for the PIC version, i.e. the PIC & an Opto Coupler.
Yes, if you study the flowchart, you will see that the remote does turn the light on.
The light controller monitors the fan wire, so it knows whether the fan is on or off. EDIT, see below.
If you use a PIC, then you will be able to do it with three integrated circuits.
Alternatively, you can do it in hardware, but that will require five integrated circuits.
Moreover, I realised that we can use the simple SDL that I posted previously.
However, there is a minor improvement that can be made. I'll post a modified drawing later.
EDIT
You raised a good point. I have just realised what you meant.
It would be simpler to access the Fan status info from the Fan Controller. So if you can access the right point, then you will only need 2 integrated circuits for the PIC version, i.e. the PIC & an Opto Coupler.
Last edited: