I have spent quite a bit of time lately trying to decode a Mitsubishi Heat Pump remote control IR signals so I can simulate via Arduino + c# app.
I finally have it mastered and I can now turn the unit on/off, control the mode, control the temperature, control the fan speed, control the swing so pretty much everything I want.
The next problem for me is that I would like to make a small unit (minimal Arduino) that will site in front of the heat pump (about 6 meters in front).
The problem's I see are:
1) I need power to the device 2) I need to send signals to the device to tell it what to do.
What I would like is to automate this so I can have the system automatically maintain a comfortable temperature based on other temperature sensors I already have.
So I need to send a simple Wifi/Bluetooth/2.4G or 443 Mhz signal.
I guess anyone who does any projects like this runs into the same problems - power and communicating with the unit.
The unit location means I do not want to run cables down the wooden beam as it would detract from the beam and it is in my living area.
My ceiling cavity is not accessible either (well I do not think it is)
Because of the requirement for some sort of wireless communications I know that batteries is a bad idea, but I need power.
I guess if I run cable for power then I could run a serial cable as well.
So just looking for ideas from people who have had similar projects? What did you do?