I rechecked the yaml file, I missed the replace the device id in one of the lines, now it’s uploaded successfully, I will install the controller in the vrf indoor units in the weekend to test it, i will inform you of the result
Thanks again.
Out of curiousity does anyone have pictures on how to install these? I have 2 floor units (uq09f) - they were just put in operation today and came to the conclusion they don’t have WiFi…so really keen to try this alternative!
Hi,
I got this error while trying to upload the yaml file to the microcontroller
INFO ESPHome 2023.12.7
INFO Reading configuration /config/esphome/lg-wired-remote.yaml...
INFO Generating C++ source...
INFO Compiling app...
Processing lg-wired-remote (board: esp32dev; framework: arduino; platform: platformio/[email protected])
--------------------------------------------------------------------------------
HARDWARE: ESP32 240MHz, 320KB RAM, 4MB Flash
- toolchain-xtensa-esp32 @ 8.4.0+2021r2-patch5
Dependency Graph
|-- AsyncTCP-esphome @ 2.0.1
|-- WiFi @ 2.0.0
|-- FS @ 2.0.0
|-- Update @ 2.0.0
|-- ESPAsyncWebServer-esphome @ 3.1.0
|-- DNSServer @ 2.0.0
|-- ESPmDNS @ 2.0.0
|-- noise-c @ 0.1.4
Compiling .pioenvs/lg-wired-remote/src/main.cpp.o
Compiling .pioenvs/lg-wired-remote/lib64d/WiFi/WiFiSTA.cpp.o
Compiling .pioenvs/lg-wired-remote/lib64d/WiFi/WiFiScan.cpp.o
<unicode string>: In lambda function:
<unicode string>:45:16: error: 'LgController' was not declared in this scope
<unicode string>:45:16: note: suggested alternative: 'isControl'
<unicode string>:45:29: error: expected primary-expression before ')' token
<unicode string>:45:30: error: expected ')' before 'id'
<unicode string>: In lambda function:
<unicode string>:57:16: error: 'LgController' was not declared in this scope
<unicode string>:57:16: note: suggested alternative: 'isControl'
<unicode string>:57:29: error: expected primary-expression before ')' token
<unicode string>:57:30: error: expected ')' before 'id'
<unicode string>: In lambda function:
<unicode string>:66:16: error: 'LgController' was not declared in this scope
<unicode string>:66:16: note: suggested alternative: 'isControl'
<unicode string>:66:29: error: expected primary-expression before ')' token
<unicode string>:66:30: error: expected ')' before 'id'
<unicode string>: In lambda function:
<unicode string>:87:9: error: 'LgController' was not declared in this scope
<unicode string>:87:9: note: suggested alternative: 'isControl'
<unicode string>:87:22: error: expected primary-expression before ')' token
<unicode string>:87:23: error: expected ')' before 'id'
<unicode string>: In lambda function:
<unicode string>:103:9: error: 'LgController' was not declared in this scope
<unicode string>:103:9: note: suggested alternative: 'isControl'
<unicode string>:103:22: error: expected primary-expression before ')' token
<unicode string>:103:23: error: expected ')' before 'id'
<unicode string>: In lambda function:
<unicode string>:119:9: error: 'LgController' was not declared in this scope
<unicode string>:119:9: note: suggested alternative: 'isControl'
<unicode string>:119:22: error: expected primary-expression before ')' token
<unicode string>:119:23: error: expected ')' before 'id'
<unicode string>: In lambda function:
<unicode string>:135:9: error: 'LgController' was not declared in this scope
<unicode string>:135:9: note: suggested alternative: 'isControl'
<unicode string>:135:22: error: expected primary-expression before ')' token
<unicode string>:135:23: error: expected ')' before 'id'
<unicode string>: In lambda function:
<unicode string>:149:9: error: 'LgController' was not declared in this scope
<unicode string>:149:9: note: suggested alternative: 'isControl'
<unicode string>:149:22: error: expected primary-expression before ')' token
<unicode string>:149:23: error: expected ')' before 'id'
<unicode string>: In lambda function:
<unicode string>:164:9: error: 'LgController' was not declared in this scope
<unicode string>:164:9: note: suggested alternative: 'isControl'
<unicode string>:164:22: error: expected primary-expression before ')' token
<unicode string>:164:23: error: expected ')' before 'id'
<unicode string>: In lambda function:
<unicode string>:177:9: error: 'LgController' was not declared in this scope
<unicode string>:177:9: note: suggested alternative: 'isControl'
<unicode string>:177:22: error: expected primary-expression before ')' token
<unicode string>:177:23: error: expected ')' before 'id'
<unicode string>: In lambda function:
<unicode string>:190:9: error: 'LgController' was not declared in this scope
<unicode string>:190:9: note: suggested alternative: 'isControl'
<unicode string>:190:22: error: expected primary-expression before ')' token
<unicode string>:190:23: error: expected ')' before 'id'
<unicode string>: In lambda function:
<unicode string>:203:9: error: 'LgController' was not declared in this scope
<unicode string>:203:9: note: suggested alternative: 'isControl'
<unicode string>:203:22: error: expected primary-expression before ')' token
<unicode string>:203:23: error: expected ')' before 'id'
<unicode string>: In lambda function:
<unicode string>:217:9: error: 'LgController' was not declared in this scope
<unicode string>:217:9: note: suggested alternative: 'isControl'
<unicode string>:217:22: error: expected primary-expression before ')' token
<unicode string>:217:23: error: expected ')' before 'id'
<unicode string>: In lambda function:
<unicode string>:222:30: error: expected type-specifier before 'LgController'
<unicode string>:229:25: error: could not convert '{controller}' from '<brace-enclosed initializer list>' to 'std::vector<esphome::climate::Climate*>'
Compiling .pioenvs/lg-wired-remote/lib64d/WiFi/WiFiServer.cpp.o
*** [.pioenvs/lg-wired-remote/src/main.cpp.o] Error 1
this is my configuration.yaml
esphome:
name: lg-wired-remote
friendly_name: lg wired remote
esp32:
board: esp32dev
framework:
type: arduino
# Enable logging
logger:
# Enable Home Assistant API
api:
encryption:
key: "8PShZ4rDya4CVnprSN0MCkjldPqc3TtBI0iaOmdKsOc="
ota:
password: "d4e17f4ade94d1e8bffe75d116f57c46"
wifi:
ssid: "homewifi"
password: "24354e6tr"
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Lg-Wired-Remote Fallback Hotspot"
password: "Cw5vXjj33J5C"
captive_portal:
uart:
- id: ac_serial
tx_pin: GPIO25
rx_pin: GPIO26 # Keep in sync with RxPin in lg-controller.h
baud_rate: 104
sensor:
- id: temperature_sensor
platform: homeassistant
internal: true
entity_id: sensor.outdoor_temp
- platform: custom
lambda: |-
return ((LgController*)id(lg-wired-remote))->get_sensors();
sensors:
- name: Error Code
- name: Pipe Temperature In
- name: Pipe Temperature Mid
- name: Pipe Temperature Out
- platform: uptime
name: Uptime
binary_sensor:
- platform: custom
lambda: |-
return ((LgController*)id(lg-wired-remote))->get_binary_sensors();
binary_sensors:
- name: Defrost
- name: Preheat
- name: Outdoor Unit
switch:
- platform: custom
lambda: |-
return ((LgController*)id(lg-wired-remote))->get_switches();
switches:
- name: Air Purifier
- name: Internal Thermistor
select:
- platform: template
name: Airflow 1 Up/Down
id: vane_position_1
optimistic: true
icon: mdi:arrow-up-down
options:
- "0 (Default)"
- "1 (Up)"
- "2"
- "3"
- "4"
- "5"
- "6 (Down)"
on_value:
- lambda: |-
((LgController*)id(lg-wired-remote))->set_vane_position(1, i);
- platform: template
name: Airflow 2 Up/Down
id: vane_position_2
optimistic: true
icon: mdi:arrow-up-down
options:
- "0 (Default)"
- "1 (Up)"
- "2"
- "3"
- "4"
- "5"
- "6 (Down)"
on_value:
- lambda: |-
((LgController*)id(lg-wired-remote))->set_vane_position(2, i);
- platform: template
name: Airflow 3 Up/Down
id: vane_position_3
optimistic: true
icon: mdi:arrow-up-down
options:
- "0 (Default)"
- "1 (Up)"
- "2"
- "3"
- "4"
- "5"
- "6 (Down)"
on_value:
- lambda: |-
((LgController*)id(lg-wired-remote))->set_vane_position(3, i);
- platform: template
name: Airflow 4 Up/Down
id: vane_position_4
optimistic: true
icon: mdi:arrow-up-down
options:
- "0 (Default)"
- "1 (Up)"
- "2"
- "3"
- "4"
- "5"
- "6 (Down)"
on_value:
- lambda: |-
((LgController*)id(lg-wired-remote))->set_vane_position(4, i);
- platform: template
name: Over Heating # Installer setting 15.
id: overheating
optimistic: true
icon: mdi:heating-coil
options:
- "0 (Default)"
- "1 (+4C/+6C)"
- "2 (+2C/+4C)"
- "3 (-1C/+1C)"
- "4 (-0.5C/+0.5C)"
on_value:
- lambda: |-
((LgController*)id(lg-wired-remote))->set_overheating(i);
number:
- platform: template
name: "Fan Speed Slow"
id: fan_speed_slow
optimistic: true
icon: mdi:fan-chevron-down
mode: box
min_value: 0
max_value: 255
step: 1
on_value:
then:
- lambda: |-
((LgController*)id(lg-wired-remote))->set_fan_speed(0, x);
- platform: template
name: "Fan Speed Low"
id: fan_speed_low
optimistic: true
icon: mdi:fan-speed-1
mode: box
min_value: 0
max_value: 255
step: 1
on_value:
then:
- lambda: |-
((LgController*)id(lg-wired-remote))->set_fan_speed(1, x);
- platform: template
name: "Fan Speed Medium"
id: fan_speed_medium
optimistic: true
icon: mdi:fan-speed-2
mode: box
min_value: 0
max_value: 255
step: 1
on_value:
then:
- lambda: |-
((LgController*)id(lg-wired-remote))->set_fan_speed(2, x);
- platform: template
name: "Fan Speed High"
id: fan_speed_high
optimistic: true
icon: mdi:fan-speed-3
mode: box
min_value: 0
max_value: 255
step: 1
on_value:
then:
- lambda: |-
((LgController*)id(lg-wired-remote))->set_fan_speed(3, x);
- platform: template
name: "Sleep Timer (minutes)"
id: sleep_timer
optimistic: true
icon: mdi:timer-outline
mode: box
min_value: 0
max_value: 420
initial_value: 0
step: 1
on_value:
then:
- lambda: |-
((LgController*)id(lg-wired-remote))->set_sleep_timer(x);
climate:
- platform: custom
lambda: |-
auto* controller = new LgController(id(ac_serial), id(temperature_sensor),
id(vane_position_1), id(vane_position_2), id(vane_position_3), id(vane_position_4),
id(overheating),
id(fan_speed_slow), id(fan_speed_low), id(fan_speed_medium), id(fan_speed_high),
id(sleep_timer)
);
App.register_component(controller);
return {controller};
climates:
- name: "Lg Livingroom"
id: livingroom_vrf
I got this error while trying to upload the yaml file to the microcontroller
It’s because you’re missing the line in base.yaml that includes lg-controller.h. You need that lg-controller.h file because it’s where most of the code is.
Please follow the instructions and only change the lines I marked with XXX comments without adding/removing other things.
1 Like
Thanks for the quick response,
Frankly as a beginner it’s kind of confusing, I have 8 esphome device and i know the basic but i could not install the device successfully, the instructions not so clear, i think if you put all the codes in one file will be easier for ppl with poor coding skills like me 
That’s because this is not part of the standard Esphome software suite. Its an external component.
I fixed the issue, this my first esphome device with external components, I didn’t know I had to create the lg-controller.h file in my config, for this reason I was got an error when I add the - lg_controller.h line, I did not connect the board to the A/C unit yet, I will install it tomorrow to test it with LG PREMTA200 controller
I made some changes to add support for multiple controllers and Fahrenheit.
The LG PREMTB controllers can be configured as ‘slave’ controller and can then be added.
I think the PREMTA200 doesn’t support this and is always master, so in this case the ESPHome controller has to be set to ‘slave’ in the YAML file. In this mode the LG controller determines the room temperature, but settings can still be changed by ESPHome.
I haven’t done a lot of testing so it may not work as well as a single controller.
Can you post here a photo/video how to reach CN-REMO port on S12ET indoor unit?
I have 4 of them do connect 
1 Like
Hi,
I was desperately searching a solution to automating my LG split for several month. The LG website is a mess and I was unable to find if it is compatible with any remote or WIFI card…
I was reaching the point to try to automate it via a fake infrared remote with an ESP32 when I found this integration !
So I dismounted my internal unit to get access to the PCB and to my surprise, there is definitively a CN-REMO green connector in it !!!
I just ordered some PCB and will let you know if it does work for me ASAP, can’t wait !!!
My internal LG unit is S09EQ.NSJ
LG indoor units seems pretty standard :
TURN OFF THE MAIN POWER !!!
then :
1 remove the underside plastic
2 there is 2 screws on the front left and right to remove
3 remove the rest of the housing
this link may help you :
https://www.youtube.com/watch?v=x6uadBphdz8
4 there is a metal case on the right of the unit
5 remove the metal screw on the top right front corner (it is under a metallic tape)
6 carefully remove the right metal panel. It is also glued with metallic tape on the top
The main PCB is there !
1 Like
It does work with my unit LG S09EQ
Thank you so much!!!
1 Like
Hey, I am getting the f09mt(prestige) unit installed next week and was looking into ways of integrating it with HA. I don’t wanna rely on the cloud for this, so I wanted to understand more about this method. My unit has wifi so I assume I would have to unplug the wifi module and plug this one instead? Do you guys have some pics of where it connects on your units? I know it’s different from unit to unit, just want some references to know what to look for. Hopefully not too much disassembly is involved. Thanks!
Edit: after a quick search I found a catalog from LG - they show my unit under the Athena extreme name and according to the accessories section, it should work with a wired remote controller, so maybe compatible with this integration, right?
@JanM321 Thanks for this integration!
I was lucky and my internal unit had a JST-XH connector removed and I had an electronics technician make my board. Everything works perfectly!!!
Now on the remote control I have ENERGY CONTR with 80% and 60% which helps me with the current consumption. Can this energy counter be integrated?
Thank you very much.
Nice!
Unfortunately I don’t think LG wired controllers support this option, but I’d need the log file of the ESPHome controller to determine this. So start the logging with esphome logs .., then use the wireless remote to change this setting to 60%, 80% etc and then post the log file somewhere.
The unit doesn’t send the energy control changes to the controller. Some messages have the “settings changed” bit set, but don’t have any changed settings. The LG controllers I have reverse-engineered don’t support these energy control settings so it’s most likely not supported by the protocol. I’ve seen the same thing with other settings.
LG units support multiple controllers (IR, Wifi, wired) but they all have a different set of features. It’s unfortunate and means we can’t support all features the units have.
1 Like
I’m in the same boat (having to solder the CN_REMO connector) and am a bit afraid of taking the whole Pcb out to do that; also skeptical of if it behaves like the ones that come pre-soldered.
Using the CN_LINK would be a great addition to what is an already amazing project!
Have you, by any chance, given this connector a try?
Has anyone used this in ‘slave’ mode yet? Are the pins ‘just’ shared with both controllers (12v, GND, Signal?).
Someone from Germany interested in a tiny pcb? Would sell some of mine I had to order on top of my personal requirement.