Need Daikin Wifi? Use the Open-Source Faikin ESP32 Hardware instead of the official wifi Modules

asic79 · April 4, 2024, 3:28pm

Was the connector from vercellino’s post please (the one from Aliexpress)?
I’m struggling as well finding one for the new S21 port…

Many thanks

ChielB · April 17, 2024, 3:24pm

Great write-up! I am looking for the STL (or STEP) files for the 3D printed case, but can’t seem to find them. Could you point me in the right direction?

Mr_Flibble · April 17, 2024, 3:36pm

They are up on a folder on Github - I think it was PCBCase - the repo has been updated a little. I had to dig through the folders to find the files.

This link is close:

github.com

revk/PCBCase/blob/e54f32c17b8684c50ac0aeb99a67f1e5fb899745/models/README.md

# Models

The `models` directory contains models for the parts. These are OpenSCAD code to draw the part. This does not have to be pretty, and will often be a simple cuboid. It is used to create a cavity in the case, and any necessary holes, etc.

## Filename

For each part a file name is found for the necessary OpenSCAD code. This is done by checking a number of possible filenames until one if found.

- If there is an `LCSC Part #`, then this is checked. e.g. `C265103`
- The footprint is checked exactly, without prefix, e.g. `RevK:JST_EH_S5B-EH_1x05_P2.50mm_Horizontal` will check for `JST_EH_S5B-EH_1x05_P2.50mm_Horizontal`
- If neither of those matched, then the name of each 3D model is processed (all of them, not just the first) isong the filename without directory or suffix, e.g. `${KICAD6_3DMODEL_DIR}/Connector_JST.3dshapes/JST_EH_S5B-EH_1x05_P2.50mm_Horizontal.wrl` would check `JST_EH_S5B-EH_1x05_P2.50mm_Horizontal`.

In any case, when checking a filename (apart from the LCSC Part), any numbers in the filename are replaced with `ℕ`, e.g. for `JST_EH_S5B-EH_1x05_P2.50mm_Horizontal` the filenames checked are as follows, matching the first one found.

- `JST_EH_SℕB-EH_1x05_P2.50mm_Horizontal`
- `JST_EH_S5B-EH_ℕx05_P2.50mm_Horizontal`
- `JST_EH_S5B-EH_1xℕ_P2.50mm_Horizontal`
- `JST_EH_S5B-EH_1x05_Pℕmm_Horizontal`
- `JST_EH_S5B-EH_1x05_P2.50mm_Horizontal`

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ChielB · April 17, 2024, 3:51pm

Got it, found it here: ESP32-Faikin/PCB/Faikin at main · revk/ESP32-Faikin · GitHub. Thanks!

DragonQ · April 23, 2024, 7:46pm

I’ve gotten fed up with the ONECTA app/API going down a couple of times this year already, screwing with our automations, so I’ve finally gotten round to buying a Faikin and cheap cable for our Perfera!

Just need to find some time to turn off the isolator, take it apart, and install the thing I guess. It’s a shame it needs internet access for updates (providing files that can be uploaded via the GUI would be better, since no air con controllers should ever be connected to the internet IMO). I will likely update it once it’s first connected then move it to my VLAN with no internet access.

One thing I will miss is the ability to set temperature in 0.5 °C increments though. Shame the local Dakin API never supported that (even though the handheld controllers do)!

westwoon · May 28, 2024, 5:58am

I have flashed ESP32 Devkit V1 with Faikin-S1-V1 bin using Flash download tool.
Configure the wifi, MQTT and setting before connect to my A/C.
MQTT log shows it connected, but it does not autodiscover by MQTT, may be because I did not connect to A/C.

Once I connect ESP32 Devkit V1 with 4 ch level shifter module to my Daikin A/C (FTKU series) S21 port via JST EH 2.5mm to dupont 2.54mm 5pin cable and power up the A/C, it immediately added to Home assistant under MQTT.
Temperature, fan control works. However Powerful/Eco mode seem not able to work.

I now facing the issue that the temperature step is 0.5degC, I would like to change to 1.0degC. But I cant find the way to change it. Anyone can advice?

p/s: The JST EH connector I purchased is from Aliexpress link below. It matched with FTKU series model, not sure others.
https://www.aliexpress.com/item/1005005465484217.html

Mr_Flibble · May 28, 2024, 6:38am

I would check with the developer on Github - but search first!
He has included a lot of features that you can enable just by sending a command to the unit via MQTT.

MassiPi · May 28, 2024, 7:04am

could easily be a limit of your unit.
Also you say you have 1° step, quite sure you’ll also not have power consumption reported by the split.
Old units have less functionalities than newer ones (mine too can’t set powerful/eco via S21, even if i can set them via remote controller…)

ferbulous · May 28, 2024, 3:29pm

Hi, anyone here using FTV-P models, i don’t see this listed on faikin compatibility list

Also, how difficult would it be to check for s21 port?
Would I need to remove all the cables before I could pull out the pcb?

MassiPi · May 28, 2024, 3:33pm

you do not need to pull out the pcb
you just need to take out the cover, then there is easily a metal cover (just pressure) and under that you can see the board.
Then it’s just about looking for an empty S21 socket
very very easy

ferbulous · May 28, 2024, 4:27pm

Thanks, just saw a video of someone installing AWM61A01 dongle and he just took off the entire enclosure and the port is visible on the side.

My model comes with built in wifi apparently so I’ll need to check where it’s hooked up to. Hopefully it’s s21, i’m seeing a few other ports discussed in the github

ferbulous · May 31, 2024, 6:57am

Hi, i’ve opened it up.
Looking at the diagram, the wifi dongle needs to connected CN_WIR port

What do you think?

Mr_Flibble · May 31, 2024, 2:27pm

It sure looks like it - but I am not familiar with this model at all. Seems to have more pins than the S21 port. So, it seems reasonable to me. You would need to know the pinouts too.

Looks like you might be the first to try this though - I can’t find any other references to other people using this port. I would guess the protocols are the same as it would be expensive to change them up.

ferbulous · May 31, 2024, 3:05pm

I’ve added discussion here

Looks like even the awm61a01 wifi dongle is only using 4 cables/pin

Ok, so I just browsed esp8266-faikin and
FTXB50C - CN_WIRED protocol is listed there so I assume this should work with the right pinout.

ferbulous · June 4, 2024, 12:15pm

Hi @Mr_Flibble can faikin display additional details like below?
I was asking around and this is using the daikin integration with BRP072C42 wifi module

Mr_Flibble · June 4, 2024, 2:44pm

Yes:

ferbulous · June 4, 2024, 11:04pm

Thanks, didn’t see any mention of other sensors other than ble on the github.
No power monitoring listed?

Mr_Flibble · June 5, 2024, 1:05am

It depends on what your unit supports, not all units feed those metrics back.

ferbulous · June 5, 2024, 2:21am

I see, so only select/newer ac model comes with power monitoring support

ferbulous · June 13, 2024, 3:58am

Hi, I’ve plugged in the jst connector to CN_WIR port, I think I’ve got the 5v & gnd pin right because the LED on the d1 mini is blinking which does indicates it’s already boot up.
I did see the faikin access point for a few moment, and then it wasn’t visible anymore.

So I removed the d1 mini and plugged to my pc, I was able to connect to the access point and setup the wifi and it’s now connected to my network.

I plugged it back again to the ac, but doesn’t look like it’s connecting to my wifi network with the led still blinking.
What do you think?