Hello, I created Fujitsu air conditioners integration for newer models with UART.
not yet fully tested.
current status of AC is showed in HomeAssistant without problems.
Some controls are not working yet, I believe I will fix it it near future.
Hardware required:
ESP32
DC/DC Adapter (currently I used powerbank for testing)
connection plug
Do not connect any of these pins to external device, like your computer. If you touch AC GND with, lets say laptop GND, it will fry your laptop USB port and/or AC mainboard fuse.
So, soldered controller for one unit. Also included OTA to example code. So far, so good.
Next step to design a box which would fit to dedicated place for controller.
btw, why I cannot edit my first post of this topic?
I have loaded up your controller code and hooked it into my ASTG18KMTC wall unit. I am using an M5 Atom Lite. I only looked at the status messages for now and it’s working correctly from the limited testing I have done.
Nice. When you controlling with remote control, are states shown in home assistant correctly?
I see some registers differs from my ac, but i dont know what they mean. Maybe it defines what functions AC has.
Also, your AC has USB-type connection, right?
Yes it has the USB A male connector and connects to the newer anywAIR dongle. In the morning I will pick this up again and run through trying to control it. I haven’t tried any control from the esp yet. I couldn’t work out how to get the sketch to connect to an mqtt server with authentication. I have in the past done that with the pubsub library though. I’ll check my remotes in the morning as well.
I will do. That looks right.
I have one anywAIR 2 dongle that I have never used as well. The models it covers are in this document, and it would appear are likely to be controlled via this method.
I see, your AC has horizontal fins position also (mine has vertical only).
So listen topic “fujitsu/7c9ebdf0677c/debug/changed/#”, replacing unique id by yours and see, what registers change when you change fins positions with remote control (vertical and horizontal). Also when enabling swing
To confirm notion: in the code (and in original fujitsu app) vertical swing is long fin that is moving up and down, so horizontal is small fins inside which are moving left to right
Can you confirm, that:
Vertical swing is still address 1011 and values (off = 0000, on = 0001)
Horizontal swing is in address 1023 and values (off = 0000, on = 0001)?
Swing
Both off:
1011 = 0000
1023 = 0000
Both on:
1011 = 0001
1023 = 0001
Vertical only:
1011 = 0001
1023 = 0000
Horizontal only:
1011 = 0000
1023 = 0001
Vertical
When vertical swing turned on, vertical position 10A0 changes to 0020?
After vertical swing turning off it fallbacks to 0002, or any previous state?
Only 4 vertical positions available? I see values from 1 to 4
Horizontal
When horizontal swing turned on, horizontal position 10A9 changes to 0020?
After horizontal swing turning off it fallbacks to 0002, or any previous state?
Only 4 vertical positions available? I see values from 1 to 5
What is state of registry 1010? Shown as /state/vertical_airflow
Verticle swing is as you describe it, up and down and horizontal swing is left to right.
The interesting thing is that it appears that register 10A0 which reports the vertical postion of the vane / louvre doesn’t report some positions in the debug stream.
The horizontal register seems fine.
Register
Function
Values / Notes
1011
Vertical Swing
0001 = On 0000 = Off
1023
Horizontal Swing
0001 = On 0000 = Off
10A0
Vertical Direction
- 0001 = to 0004 = Top to Bottom - 0020 = Swing mode - Returns to position 3 when turned off - More Postions are able to be set via the remote but are not reported in the debug stream
10A9
Horizontal Direction
- 0001 to 0005 = 5 positions (Left to Right) - 0020 = Swing mode - Returns to previous position when swing is off
Register 1010 doesn’t yet make a lot of sense to me. I will look at that in more depth later if you like. It seems to be 1 in cool, dry and fan mode but then 4 in heat mode and in auto mode I saw it in 1 and 4. My MQTT history also records a 3 but I am not sure what I was doing at the time it recorded that. Happy to take some of this Dev chat elsewhere if you like? Can PM me and we can arrange something or else keep it here.
I believe that will also work. What connector does the adapter connect to on your aircon? It may require some code changes but it at first glance seems like it’s going to be hardware compatible.
That’s the same socket that’s on my aircon. Mine uses the anywAIR II dongle and some of the code seems a bit different but the fundamentals are working. Despite that being a usb male plug, there is nothing usb about it. It will be 12v GND and RX plus TX. Benas discovered that the ground is a floating ground. Don’t connect your computer to it. The circuit that Benas used in the GitHub will work. I think he is working towards an esphome integration for this. Maybe someone will design a nice little compact dongle.
