What’s better than working on a project for improving an electronic device (see Making my washing machine smarter)? Working on two projects!
I have a Daitsu air conditioner in my bedroom. It is an old model, the DSG-07HRN2. My plans are: I want to control it from my phone, and be able to program it accoring to X criteria in the future (temperature, month of the year, if I’m at home or not…). I could use OpenHAB for this of course, as I did with my washing machine, but first, I need to connect my air conditioner to my OpenHAB server, which, being an old non-smart model, is not possible without modifications.
I could use some king of magical (and probably expensive) thingy that externally sends the commands using infrared and uses a proprietary APP to control it (I know of their existance), but… where’s the fun there? 😜. My idea is to use another ESP-01 microcontroller, and send the infrared commands from inside the air conditioner unit itself. I’m sure this is going to be interesting 😊.
First, let’s investigate which kind of protocol does the original remote use, I used the IRrecvDumpV2 example sketch from the Arduino-IRRemote library, created by Ken Shirriff and other contributors.
When I tested my remote on my arduino MEGA, I was surprised it said the protocol used was SAMSUNG, which has nothing to do with Daitsu. Interesting.
