Grax71
February 10, 2024, 7:52pm
1
Hi all!
Go on Aliexpress and buy a Smart Switch Tuya-compliant, the cheapest version at around 2€. Here is the picture:
Then you can desolder the original, totally unknown wifi board:
Then , still on the same site, buy an ESP-02 which is pin to pin compatible. Program it with a standard Usb-to-serial programmer with ESP Home and then solder it in the same place:
Then, once the chip is connected, configure the pins as follows:
That’s all. Hope you will find it useful!
Cheers!
1 Like
parautenbach
February 10, 2024, 10:24pm
2
Have you tried to connect a programmer to the original? Maybe it is actually an ESP chip. Might get some info via something like esptool.py.
It’s an LN882H, not esp but now supported by openbeken
https://www.elektroda.com/rtvforum/topic4028087.html
2 Likes
Tasmota template
GaaD
December 23, 2025, 9:48pm
5
Hi.
Despite the IP configuration, ESPHome obtains its address from DHCP.
It doesn’t display signal strength when scanning for WiFi networks.
The only update option is OTA via the website.
My configuration:
esphome:
name: sw-garaz
friendly_name: sw-garaz
ln882x:
board: generic-ln882hki
# Enable logging
logger:
# Enable Home Assistant API
api:
encryption:
key: "***"
ota:
- platform: esphome
password: !secret ota_password
wifi:
networks:
- ssid: ***
password: !secret wifi_password_1
- ssid: ***
password: !secret wifi_password_2
- ssid: ***
password: !secret wifi_password_3
- ssid: ***
password: !secret wifi_password_4
manual_ip:
static_ip: 192.168.1.84
gateway: 192.168.1.1
subnet: 255.255.255.0
dns1: 192.168.1.1
dns2: 91.234.8.8
ap:
ssid: !secret wifi_ap_ssid
password: !secret wifi_ap_password
captive_portal:
preferences:
flash_write_interval: 12h
web_server:
port: 80
version: 3
auth:
username: !secret web_username
password: !secret web_password
time:
- id: time_provider
platform: homeassistant
on_time_sync:
- logger.log: "Synchronized system clock"
text_sensor:
- platform: wifi_info
ip_address:
name: ESP IP Address
ssid:
name: ESP Connected SSID
mac_address:
name: ESP Mac Wifi Address
scan_results:
name: ESP Latest Scan Results
binary_sensor:
- platform: gpio
id: ext_onoff
pin:
number: P6
inverted: true
mode: INPUT_PULLUP
on_click:
- min_length: 50ms
max_length: 500ms
then:
- if:
condition:
lambda: 'return id(rel_1).state;'
then:
- switch.turn_off: rel_1
- script.stop: timer
else:
- script.execute: timer
on_press:
then:
- script.stop: timer
- switch.turn_on: rel_1
on_release:
then:
- switch.turn_off: rel_1
- platform: gpio
id: int_onoff
pin:
number: P10
inverted: true
mode: INPUT_PULLUP
on_click:
- min_length: 50ms
max_length: 500ms
then:
- if:
condition:
lambda: 'return id(rel_1).state;'
then:
- switch.turn_off: rel_1
- script.stop: timer
else:
- script.execute: timer
- min_length: 1000ms
max_length: 5000ms
then:
- script.stop: timer
- switch.turn_on: rel_1
switch:
- platform: gpio
id: rel_1
name: Relay 1
pin: P11
button:
- platform: template
on_press:
- if:
condition:
lambda: 'return id(rel_1).state;'
then:
- switch.turn_off: rel_1
- script.stop: timer
else:
- script.execute: timer
name: "Start"
icon: mdi:timer
- platform: restart
name: Restart
status_led:
pin:
number: P7
inverted: true
script:
- id: timer
then:
- switch.turn_on: rel_1
- delay: !lambda return id(run_time).state*60000;
- switch.turn_off: rel_1
number:
- platform: template
id: run_time
name: "Nast. czasu"
icon: mdi:av-timer
unit_of_measurement: "min."
optimistic: True
step: 1
mode: box
min_value: 1
max_value: 60
restore_value: True
on_value:
- sensor.template.publish:
id: runtime
state: !lambda 'return x;'
sensor:
- platform: template
id: runtime
name: "Timer"
logs:
INFO ESPHome 2025.12.2
INFO Reading configuration /config/esphome/sw-garaz.yaml...
INFO Detected timezone 'Europe/Warsaw'
INFO Starting log output from 192.168.1.22 using esphome API
INFO Successfully resolved sw-garaz @ 192.168.1.22 in 0.000s
INFO Successfully connected to sw-garaz @ 192.168.1.22 in 0.101s
INFO Successful handshake with sw-garaz @ 192.168.1.22 in 0.057s
[22:30:51.663][I][app:194]: ESPHome version 2025.12.2 compiled on Dec 23 2025, 20:37:01
[22:30:51.673][C][logger:261]: Logger:
[22:30:51.673][C][logger:261]: Max Level: DEBUG
[22:30:51.673][C][logger:261]: Initial Level: DEBUG
[22:30:51.685][C][logger:267]: Log Baud Rate: 115200
[22:30:51.685][C][logger:267]: Hardware UART: UART0
[22:30:51.702][C][status_led:018]: Status LED:
[22:30:51.715][C][status_led:019]: Pin: 7
[22:30:51.715][C][switch.gpio:092]: GPIO Switch 'Relay 1'
[22:30:51.715][C][switch.gpio:092]: Restore Mode: always OFF
[22:30:51.721][C][switch.gpio:029]: Pin: 11
[22:30:51.744][C][template.number:016]: Template Number 'Nast. czasu'
[22:30:51.751][C][template.number:019]: Icon: 'mdi:av-timer'
[22:30:51.757][C][template.number:023]: Unit of Measurement: 'min.'
[22:30:51.765][C][template.number:049]: Optimistic: YES
[22:30:51.771][C][template.number:399]: Update Interval: 60.0s
[22:30:51.780][C][template.sensor:017]: Template Sensor 'Timer'
[22:30:51.780][C][template.sensor:017]: State Class: ''
[22:30:51.780][C][template.sensor:017]: Unit of Measurement: ''
[22:30:51.780][C][template.sensor:017]: Accuracy Decimals: 1
[22:30:51.794][C][template.sensor:399]: Update Interval: 60.0s
[22:30:51.804][C][gpio.binary_sensor:016]: GPIO Binary Sensor 'ext_onoff'
[22:30:51.811][C][gpio.binary_sensor:072]: Pin: 6
[22:30:51.824][C][gpio.binary_sensor:073]: Mode: polling
[22:30:51.829][C][gpio.binary_sensor:016]: GPIO Binary Sensor 'int_onoff'
[22:30:51.831][C][gpio.binary_sensor:072]: Pin: 10
[22:30:51.837][C][gpio.binary_sensor:073]: Mode: polling
[22:30:51.860][C][homeassistant.time:010]: Home Assistant Time
[22:30:51.873][C][time:029]: Timezone: 'CET-1CEST,M3.5.0,M10.5.0/3'
[22:30:51.875][C][wifi_info:016]: SSID 'ESP Connected SSID'
[22:30:51.893][C][wifi_info:016]: MAC Address 'ESP Mac Wifi Address'
[22:30:51.902][C][wifi_info:016]: IP Address 'ESP IP Address'
[22:30:51.917][C][restart.button:014]: Restart Button 'Restart'
[22:30:51.924][C][restart.button:017]: Icon: 'mdi:restart'
[22:30:51.949][C][captive_portal:118]: Captive Portal:
[22:30:51.952][C][wifi:1132]: WiFi:
[22:30:51.952][C][wifi:1132]: Connected: YES
[22:30:51.958][C][wifi:897]: Local MAC: 00:50:C2:B9:59:E3
[22:30:51.965][C][wifi:904]: IP Address: 192.168.1.22
[22:30:51.977][C][wifi:908]: SSID: [redacted]
[22:30:51.977][C][wifi:908]: BSSID: [redacted]
[22:30:51.977][C][wifi:908]: Hostname: 'sw-garaz'
[22:30:51.977][C][wifi:908]: Signal strength: -77 dB ▂▄▆█
[22:30:51.977][C][wifi:908]: Channel: 10
[22:30:51.977][C][wifi:908]: Subnet: 255.255.255.0
[22:30:51.977][C][wifi:908]: Gateway: 192.168.1.1
[22:30:51.977][C][wifi:908]: DNS1: 192.168.1.1
[22:30:51.977][C][wifi:908]: DNS2: 0.0.0.0
[22:30:52.004][C][web_server:335]: Web Server:
[22:30:52.004][C][web_server:335]: Address: 192.168.1.84:80
[22:30:52.018][C][esphome.ota:092]: Over-The-Air updates:
[22:30:52.018][C][esphome.ota:092]: Address: 192.168.1.84:8820
[22:30:52.018][C][esphome.ota:092]: Version: 2
[22:30:52.029][C][esphome.ota:099]: Password configured
[22:30:52.038][C][safe_mode:018]: Safe Mode:
[22:30:52.038][C][safe_mode:018]: Successful after: 60s
[22:30:52.038][C][safe_mode:018]: Invoke after: 10 attempts
[22:30:52.038][C][safe_mode:018]: Duration: 300s
[22:30:52.049][C][web_server.ota:241]: Web Server OTA
[22:30:52.068][C][api:211]: Server:
[22:30:52.068][C][api:211]: Address: 192.168.1.84:6053
[22:30:52.068][C][api:211]: Listen backlog: 4
[22:30:52.068][C][api:211]: Max connections: 8
[22:30:52.073][C][api:218]: Noise encryption: YES
[22:30:52.085][C][wifi_info:016]: Scan Results 'ESP Latest Scan Results'
[22:30:52.106][C][mdns:177]: mDNS:
[22:30:52.106][C][mdns:177]: Hostname: sw-garaz
[22:30:52.114][C][lt.component:013]: LibreTiny:
[22:30:52.114][C][lt.component:013]: Version: v1.9.1 on generic-ln882hki, compiled at Dec 23 2025 20:34:44, GCC 10.3.1 (-Os)
[22:30:52.114][C][lt.component:013]: Loglevel: 3
After accepting the IP change in the HA, the switch is visible in the HA and working properly. A fix in Libretiny is probably required.
