I have just finished this integration. It uses a specifically designed esp12e board and interfaces with Toshiba wall remotes that use the AB protocol. It uses esphome external components approach. All necessary instructions and files included.
The project is here:
https://github.com/makusets/esphome-toshiba-ab
Feedback and testing appreciated!
Wow!, looks totally cool. I’d be willing to pay for a working one!, could we get in contact?
This has been working in my home system for several months now with no problems. Feel free to message if you need a hand.
Hi @makusets,
I was originally looking into the issalig/toshiba_air_cond project, which seems great but doesn’t include the BOM or position files needed for assembly. That’s how I found your project!
First, I just wanted to say it looks amazing. Super clear and complete, with everything I need to actually build it. Thanks a lot for making it open source!
I have a Toshiba Carrier ducted AC unit (model 40VD048S-6S-TEE). The main board inside is a MCC-1631, and I can clearly see the A/B terminal on CN41.
Looking through the service manual, there are references to TCC-Link all over the place, so I assume this is a standard Toshiba TCC-Link A/B bus. The wired remote also connects to that CN41 port. Based on your README, it looks like this board should be compatible with this setup.
Here’s a picture of the motherboard:
Do you think it’s worth trying with this AC model ? Especially giving the cost of the board:
I found a seller on AliExpress who can assemble the board for me, but the quote I got was: $145 for 2 units and $175 for 10 units! (Apparently the welding machine setup is what drives the cost up, even for a small batch.)
Do you know if there’s anywhere I could get a ready-made sample or cheaper assembly service just to try it out first? I’d be happy to share my experience and help others if it works.
Thanks again for this project, whether or not it works with my unit, I really appreciate the effort you put into documenting everything!
PS: I tried to raise an issue instead of here but issues are disabled on your repo.
Hi @tchlyah, I just turned on issues in my repo. Also, there’s some extra info and updated files. If you cannot manage to get a board made and delivered with the instructions, let me know, I still have some boards and components at home and could try to assemble one for you for a reasonable price.
I believe the board will work with your machine.
On another note,
I am porting a new code that @issalig published, it’s an alternative way of integrating with HA using MQTT, but it also offers the possibility of standalone wifi remote. I am testing it at the moment and seems to work really well. I will added to my repo in short.
Miquel
Hello, thank you very much for your work, it looks great, but unfortunately it’s impossible for me to reproduce it. Would it be possible to make 2 boards for me and deliver them to France, if it’s not too expensive? 
My air conditioner is a RAS-M16U2DVGE with exactly the same wall remote control as yours. I bought the WRE-T00AJ10 remote control without knowing that it is not compatible with my air conditioner. I tried to connect it to the 9-wire output cable, while there are only 5 wires on the module. It powers on, but it doesn’t create any link and then it turns off.
Thanks for your help.
Hi @makusets.
I just stumbled across this. Thank you so much for sharing your amazing work! I’d almost given up on integrating my Toshiba AC (RBC-AMS41E controller) with home assistant and now I’m about to pull the trigger on ordering some custom boards through jlcpcb.
@MasterTacos: like you I’d probably prefer to buy a pre-made one if someone has one… if not I’ll order some extras and I can try and sort out sending one from me in Australia to you in France.
Hi @MasterTacos, @Gavtron,
I have few boards that I have ordered from JLCPCB. I have confirmed that the board is working perfectly for me, however, for some ACs (like mine), it needs a slight modification and USB power source.
If you have the same AC as @makusets then it will probably work without this. He is currently working on a revision to avoid this, you can take a look to this GitHub issue: Protocol mismatch? Toshiba Carrier (40VD048S / MCC-1631 CN41) – need help debugging · Issue #5 · makusets/esphome-toshiba-ab · GitHub
If you still want to test the current revision, feel free to send me a DM.
Hello,
Is it possible to miniaturize the PCB?
live in France, if someone has a copy to send. I would love to test this solution.
BR
Julien
Hi @yvert,
I still have few left, you can send me a DM to organize the delivery.
Hello @tchlyah i can’t sent you a DM please contact me on my mail [email protected].
Thx
I also don’t have the ability to DM you, but if you email me at [email protected], I’d like to get a PCB if at all possible.
From what I gather, the Estia heat pumps use the same interface as the AC units, so it’s just a matter of extending the firmware to support both families of devices.
