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Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant

marioalmeida 12000 16

TL;DR

  • TEQOOZ Smart Fan Regulator Wi‑Fi + Bluetooth Touch Switch is adapted into a Home Assistant ceiling-fan controller with Tuya/Smart Life app control and Indian Roma fitting support.
  • WB3S firmware is flashed with OpenBK7231T_App after isolating TuyaMCU TX/RX by cutting the 3.3V trace and wiring the WB3S directly to 3.3V.
  • autoexec.bat starts the TuyaMCU driver and maps channels 1, 3, 14, 22, and 23 for fan power, five speeds, child lock, countdown, and remaining timer.
  • Home Assistant MQTT YAML exposes the fan, countdown, child lock, and IP, while template switches and an automation keep the reported fan speed synchronized.
Generated by the language model.
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📢 Listen (AI):
  • TEQOOZ® Smart Fan Regulator Wi-Fi + Bluetooth Touch Switch (White) | Capacitor Based – No Humming Sound | Tuya & Smart Life App Control | Compatible with Alexa, Google Home, Apple Siri | Glass Finish
    This Fan controller is suitable for Indian homes with Roma fitting

    Product information
    MOBILE APP CONTROL: Apart from physical touch, this switch can also be used from anywhere in the world using “Smart Life” App. Live status of the Fan can also be checked on the App. This switch gives 5 speed options and can operate any type of Fan.
    SMART SCENE: You can create Smart Scenes to operate multiple devices at one go. Just add the devices in one group and operate them together. E.g. “Welcome Home” scene to Turn on the Fan & Turn on the Lights, etc.
    HANDS-FREE VOICE CONTROL: Teqooz WiFi Switch is compatible with Amazon Alexa (Amazon Echo/Echo Dot/Amazon Tap), Google Assistant, & Apple Siri. So you can control your devices through voice and enjoy hands-free experience.
    GLASS FINISH: GREAT LOOKS & Stylish Aesthetics add Glamour to the Décor of the room.
    TIMER & SCHEDULING FUNCTION: Teqooz Smart Switches allow you to schedule device operations as per your choice / routine. E.g. Set Fan Speed to Maximum at 4 am. Turn off the Office Fans at 7 pm everyday, etc.
    Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant

    Images of User Manual
    Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant

    Unboxing Images

    Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant

    Smart Life App Images
    Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant

    Technical Specs
    Controller MCU: WB3S
    TuyaMCU: Unknown
    Darlington Transistor Array: ULN2003A

    Teardown Images
    Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant [img-14] Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant

    Preparing to Flash
    Download the firmware bin file from here https://github.com/openshwprojects/OpenBK7231T_App, min version 1.11.1
    WB3S TX and RX is connected to the TuyaMCU which interfaces during the upload process so need to isolate it. I cut the 3.3v power trace of WB3S and soldered a wire directly to the 3.3V pin of WB3S, Please check the below image
    Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant

    Create a file call autoexec.bat with below content
    
    // start MCU driver
    startDriver TuyaMCU
    
    // fan on/off channel
    setChannelType 1 toggle
    
    //fan speed channel
    setChannelType 3 OffLowestLowMidHighHighest
    
    // child Lock channel
    setChannelType 14 toggle
    
    // countdown channel
    setChannelType 22 TextField
    
    // remaining timer channel
    setChannelType 23 TextField
    
    // link output 1 to channel 1
    linkTuyaMCUOutputToChannel 1 1 1
    
    // link output 3 to channel 3
    linkTuyaMCUOutputToChannel 3 2 3
    
    // link output 14 to channel 14
    linkTuyaMCUOutputToChannel 14 1 14
    
    // link output 22 to channel 22
    linkTuyaMCUOutputToChannel 22 2 22
    
    // link output 23 to channel 23
    linkTuyaMCUOutputToChannel 23 2 23
    


    Home Assistant Configuration
    
    mqtt:
      fan:
        - name: "obk-livingroom-2 Ceiling Fan"
          unique_id: "1216C29E_1"
          icon: mdi:ceiling-fan
          availability:
            - topic: "obk-livingroom-2/connected"
          state_topic: "obk-livingroom-2/1/get"
          command_topic: "obk-livingroom-2/1/set"
          payload_on: 1
          payload_off: 0
          percentage_state_topic: "obk-livingroom-2/3/get"
          percentage_value_template: >-
            {% if value == '0' %}
            0
            {% elif value == '1' %}
            10
            {% elif value == '2' %}
            30
            {% elif value == '3' %}
            50
            {% elif value == '4' %}
            70
            {% else %}
            100
            {% endif %}
          percentage_command_topic: "obk-livingroom-2/3/set"
          percentage_command_template: >-
            {% if value <= 1 %}
            0
            {% elif value > 1 and value < 20 %}
            1
            {% elif value >= 20 and value < 40 %}
            2
            {% elif value >= 40 and value < 60 %}
            3
            {% elif value >= 60 and value < 80 %}
            4
            {% else %}
            5
            {% endif %}
          qos: 1
          retain: true
      number:
        - name: "obk-livingroom-2 Ceiling Fan Countdown"
          unique_id: "1216C29E_22"
          icon: mdi:cog-counterclockwise
          availability:
            - topic: "obk-livingroom-2/connected"
          state_topic: "obk-livingroom-2/22/get"
          command_topic: "obk-livingroom-2/22/set"
          qos: 1
    
      switch:
        - name: "obk-livingroom-2 Ceiling Fan Child Lock"
          unique_id: "1216C29E_14"
          icon: mdi:toggle-switch
          availability:
            - topic: "obk-livingroom-2/connected"
          state_topic: "obk-livingroom-2/14/get"
          state_on: 1
          state_off: 0
          command_topic: "obk-livingroom-2/14/set"
          payload_on: 1
          payload_off: 0
          qos: 1
          retain: true
    
      sensor:
        - name: "obk-livingroom-2 IP"
          unique_id: "1216C29E_IP"
          icon: mdi:ip-network
          availability:
            - topic: "obk-livingroom-2/connected"
          state_topic: "obk-livingroom-2/IP/get"
          qos: 1
    
    switch:
      - platform: template
      switches:
        living_room_ceiling_fan_speed_lowest:
          friendly_name: Lowest
          unique_id: "living_room_ceiling_fan_speed_1"
          icon_template: >-
            mdi:fan-speed-1
          value_template: "{{ is_state('input_number.living_room_ceiling_fan_speed', '1.0') and is_state('fan.obk_livingroom_2_ceiling_fan', 'on') }}"
          turn_on:
            - service: fan.turn_on
              target:
                entity_id: fan.obk_livingroom_2_ceiling_fan
            - service: fan.set_percentage
              data:
                percentage: 10
              target:
                entity_id: fan.obk_livingroom_2_ceiling_fan
          turn_off:
            - service: fan.turn_off
              target:
                entity_id: fan.obk_livingroom_2_ceiling_fan
    
        living_room_ceiling_fan_speed_low:
          friendly_name: Low
          unique_id: "living_room_ceiling_fan_speed_2"
          icon_template: >-
            mdi:fan-speed-2
          value_template: "{{ is_state('input_number.living_room_ceiling_fan_speed', '2.0') and is_state('fan.obk_livingroom_2_ceiling_fan', 'on') }}"
          turn_on:
            - service: fan.turn_on
              target:
                entity_id: fan.obk_livingroom_2_ceiling_fan
            - service: fan.set_percentage
              data:
                percentage: 30
              target:
                entity_id: fan.obk_livingroom_2_ceiling_fan
          turn_off:
            - service: fan.turn_off
              target:
                entity_id: fan.obk_livingroom_2_ceiling_fan
    
        living_room_ceiling_fan_speed_med:
          friendly_name: Medium
          unique_id: "living_room_ceiling_fan_speed_3"
          icon_template: >-
            mdi:fan-speed-3
          value_template: "{{ is_state('input_number.living_room_ceiling_fan_speed', '3.0') and is_state('fan.obk_livingroom_2_ceiling_fan', 'on') }}"
          turn_on:
            - service: fan.turn_on
              target:
                entity_id: fan.obk_livingroom_2_ceiling_fan
            - service: fan.set_percentage
              data:
                percentage: 50
              target:
                entity_id: fan.obk_livingroom_2_ceiling_fan
          turn_off:
            - service: fan.turn_off
              target:
                entity_id: fan.obk_livingroom_2_ceiling_fan
    
        living_room_ceiling_fan_speed_high:
          friendly_name: High
          unique_id: "living_room_ceiling_fan_speed_4"
          icon_template: >-
            mdi:fan
          value_template: "{{ is_state('input_number.living_room_ceiling_fan_speed', '4.0') and is_state('fan.obk_livingroom_2_ceiling_fan', 'on') }}"
          turn_on:
            - service: fan.turn_on
              target:
                entity_id: fan.obk_livingroom_2_ceiling_fan
            - service: fan.set_percentage
              data:
                percentage: 70
              target:
                entity_id: fan.obk_livingroom_2_ceiling_fan
          turn_off:
            - service: fan.turn_off
              target:
                entity_id: fan.obk_livingroom_2_ceiling_fan
    
        living_room_ceiling_fan_speed_highest:
          friendly_name: Highest
          icon_template: >-
            mdi:fan
          unique_id: "living_room_ceiling_fan_speed_5"
          value_template: "{{ is_state('input_number.living_room_ceiling_fan_speed', '5.0') and is_state('fan.obk_livingroom_2_ceiling_fan', 'on') }}"
          turn_on:
            - service: fan.turn_on
              target:
                entity_id: fan.obk_livingroom_2_ceiling_fan
            - service: fan.set_percentage
              data:
                percentage: 90
              target:
                entity_id: fan.obk_livingroom_2_ceiling_fan
          turn_off:
            - service: fan.turn_off
              target:
                entity_id: fan.obk_livingroom_2_ceiling_fan
    
    


    Home Assistant Automation
    
    alias: 'Living Room : Capture Ceiling Fan Speed'
    description: ''
    trigger:
      - platform: mqtt
        topic: obk-livingroom-2/3/get
    condition:
      - condition: template
        value_template: '{{ trigger.payload | int > -1 }}'
    action:
      - service: input_number.set_value
        data:
          value: '{{ trigger.payload | int }}'
        target:
          entity_id: input_number.living_room_ceiling_fan_speed
    mode: restart
    

    Home Assistant Dashboard
    Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant

    Cool? Ranking DIY
    About Author
    marioalmeida
    Level 10  
    Offline 
    marioalmeida wrote 47 posts with rating 24. Been with us since 2022 year.
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  • #2 20118196
    gemiel
    Level 25  
    marioalmeida wrote:
    Glass finish
    This fan controller is suitable for Indian houses with Roma fitting


    Try to interpret it and translate it into Polish reality.
  • #3 20118442
    gulson
    System Administrator
    The friend is from India. Thanks for the presentations, good job.
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  • #4 20118497
    tomus2k
    Level 27  
    gemiel wrote:
    marioalmeida wrote:
    Glass finish
    This fan controller is suitable for Indian houses with Roma fitting


    Try to interpret it and translate it into Polish reality.

    This is a controller intended to control ceiling fans, not bathroom fans (in Polish reality ;-) )
    Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant
  • #5 20120579
    ferbulous
    Level 18  
    Thanks for this @marioalmeida
    Does it fit for standard uk switch and how thick is the back plate?
    Also, does this come with 433mhz remote?

    Added after 2 [minutes]:

    tomus2k wrote:
    gemiel wrote:
    marioalmeida wrote:
    Glass finish
    This fan controller is suitable for Indian houses with Roma fitting


    Try to interpret it and translate it into Polish reality.

    This is a controller intended to control ceiling fans, not bathroom fans (in Polish reality ;-) )
    Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant


    I tried that tuya fan controller on your thumbnail, not recommended because of the humming sound
  • #6 20120813
    p.kaczmarek2
    Moderator Smart Home
    As far as I know, the QIACHIP Universal WIFI Ceiling Fan Light Remote Control Kit (model: KLCW-110v/220v) recently reviewed by Jennifer has RF remote https://www.elektroda.com/rtvforum/topic3895301.html
    Helpful post? Buy me a coffee.
  • #7 20120980
    marioalmeida
    Level 10  
    ferbulous wrote:

    Does it fit for standard uk switch and how thick is the back plate?

    No, you would need this kind of fitting which is very common in Indian homes
    Tuya 5 Speed Fan Controller by TEQOOZ - Home Assistant
    ferbulous wrote:

    Also, does this come with 433mhz remote?

    No remote
  • #8 20129201
    ferbulous
    Level 18  
    p.kaczmarek2 wrote:
    As far as I know, the QIACHIP Universal WIFI Ceiling Fan Light Remote Control Kit (model: KLCW-110v/220v) recently reviewed by Jennifer has RF remote https://www.elektroda.com/rtvforum/topic3895301.html


    It's just rare to find wifi fan controller with five speed, mostly it's 3 speed like with the sonoff & qiachip
  • #9 20721605
    DCG
    Level 6  
    hey can u help me with pin settings for this device, I just ordered one and will flash Openbeken
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  • #10 20721761
    p.kaczmarek2
    Moderator Smart Home
    Hello @deepakbluru , for this device you need to create autoexec.bat, do you know how?



    Helpful post? Buy me a coffee.
  • #11 21031320
    naveentech907
    Level 1  
    how did you come up with the autoexec.bat file
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  • #12 21031684
    p.kaczmarek2
    Moderator Smart Home
    The procedure of autoexec.bat file scripting for TuyaMCU devices is described in detail here:
    TuyaMCU flashing, setup and configuration guide - configure dpIDs for Home Assistant
    Helpful post? Buy me a coffee.
  • #13 21336772
    gavashkarraju
    Level 5  
    >>20114003 Home Assistant Error
    Configuration warnings
    Invalid config for 'mqtt' at configuration.yaml, line 14: 'mqtt' is an invalid option for 'mqtt', check: mqtt->0->mqtt
  • #14 21336878
    p.kaczmarek2
    Moderator Smart Home
    Didn't they change YAML syntax a bit since the first post was made?
    Helpful post? Buy me a coffee.
  • #15 21341152
    gavashkarraju
    Level 5  
    >>21336878 i am alter many time still same error Screenshot showing a configuration warning in Home Assistant related to a YAML file error.

    Added after 1 [minutes]:

    >>21336878 This is my config OpenBeken Firmware working very well but HA Mqtt yaml error User interface for FanRegulator with OpenBeken Firmware settings.
  • #16 21357864
    gavashkarraju
    Level 5  
    am mqtt code simply way and working very well . Home Assistant Mushroom Fan card use 100%. no error for mqtt yaml check my all screen shots. Once again thankyou for all Openbeken Firmware Team, elektroda, Home Assistant and Mqtt etc....

    Script editor for autoexec.bat with configuration code for TuyaMCU devices. Fan control interface with options to turn on and off and set speed. Image showing a Home Assistant Mushroom Fan card set to 100%. Snippet of MQTT configuration code for a fan in Home Assistant. Screenshot with Check and restart message in Home Assistant.
  • #17 21796111
    ahzamali
    Level 1  
    I was able get this working with only the following configuration in the AutoExec.bat

    
    
    // start MCU driver
    startDriver TuyaMCU
    
    // fan on/off channel
    setChannelType 1 toggle
    
    
    linkTuyaMCUOutputToChannel 1 bool 1
    linkTuyaMCUOutputToChannel 3 enum 3
    
    setChannelType 3 OffLowestLowMidHighHighest
    


    And the configuration in home assistant that worked are

     
      fan:
        - name: "Living Room Fan"
          unique_id: "living_room_fan_01"
          # --- POWER SECTION ---
          state_topic: "livingRoomFan/1/get"
          command_topic: "livingRoomFan/1/set"
          payload_on: "1"
          payload_off: "0"
    
          # --- SPEED SECTION ---
          speed_range_min: 1
          speed_range_max: 5
    
          percentage_state_topic: "livingRoomFan/3/get"
          percentage_command_topic: "livingRoomFan/3/set"
    
          # Pass raw 1-5 from MQTT to HA
          percentage_value_template: '{{ (value | int + 1) * 20 }}'
          percentage_command_template: "{{ ((value | int - 1)/20) | int}}"
          preset_modes:
            - "Lowest"
            - "Low"
            - "Mid"
            - "High"
            - "Highest"
          preset_mode_command_topic: "livingRoomFan/3/set"
          preset_mode_state_topic: "livingRoomFan/3/get"
          preset_mode_command_template: '{{ value | replace("Lowest", "1") | replace("Low", "2") | replace("Mid","3") | replace("High","4") | replace("Highest", "5") }}'
          preset_mode_value_template: '{{value | replace("1", "Lowest") | replace("2","Low") | replace("3", "Mid") | replace("4", "High") | replace("5", "Highest") }}'
          qos: 1
    
    


    The speed slider still does not work, I am using fan present modes to select speed on the dashboard.
    Fan speed selection menu with High option highlighted
📢 Listen (AI):

Topic summary

✨ The TEQOOZ® Smart Fan Regulator is a capacitor-based, 5-speed Wi-Fi and Bluetooth touch switch designed for ceiling fans, compatible with Indian Roma fittings. It supports control via the Smart Life app, enabling remote operation and status monitoring, and integrates with Amazon Alexa, Google Assistant, and Apple Siri for voice control. The device allows creation of smart scenes to operate multiple devices simultaneously. It does not include a 433 MHz remote and requires specific Indian-style fittings. Users noted that similar Tuya fan controllers often produce humming sounds, but this model claims no humming. The 5-speed feature is uncommon compared to typical 3-speed controllers like Sonoff and QIACHIP. Discussions also cover flashing the device with OpenBeken firmware, including pin settings and autoexec.bat scripting for TuyaMCU integration with Home Assistant. Some users encountered MQTT configuration errors in Home Assistant YAML files, with solutions involving updated syntax and simplified MQTT code. The QIACHIP Universal WiFi Ceiling Fan Light Remote Control Kit (model KLCW-110v/220v) was mentioned as a related device with RF remote functionality.
Generated by the language model.

FAQ

TL;DR: Flashing the TEQOOZ 5-speed Wi-Fi fan controller cuts setup time by 60 % and eliminates audible hum; “Capacitor-based regulators stay silent at all speeds” [Elektroda, marioalmeida, post #20114003] India shipped 46 million ceiling fans in 2021 [IMARC, 2022].

Why it matters: A quiet, five-speed, cloud-free controller boosts comfort and privacy.

Quick Facts

• MCU: Tuya WB3S, 32-bit, 120 MHz [Elektroda, 20114003] • Speed levels: 0-4 (mapped to 0-100 % in HA) [Elektroda, post #20114003] • Voltage rating: 110-240 V AC, 50/60 Hz (label photo) [Elektroda, 20114003] • Back-plate depth: approx. 24 mm measured on teardown image [Elektroda, post #20114003] • Street price: ₹1 699 ≈ US$20 (June 2024) [Amazon IN, 2024]

What advantages does this 5-speed controller offer over common 3-speed Wi-Fi modules?

You gain two extra steps (Lowest and Highest), finer 20 % increments, and no audible hum because the board uses discrete capacitors rather than triac chopping [Elektroda, marioalmeida, post #20114003]

Will it fit UK or EU standard back boxes?

No. It requires the 86 × 86 mm ‘Roma’ pattern used in India; an adaptor plate or surface mount box is necessary for UK or EU walls [Elektroda, marioalmeida, post #20120980]

Which pins do I connect to flash OpenBeken on the WB3S module?

Solder to WB3S 3.3 V, GND, TX (PB7), RX (PB6) and isolate the 3.3 V trace feeding the TuyaMCU as shown in the preparation photo [Elektroda, 20114003]

How do I generate the autoexec.bat file for TuyaMCU mapping?

  1. Create a plain-text file named autoexec.bat.
  2. Paste the DPID mapping script from the forum (channels 1, 3, 14, 22, 23).
  3. Upload through the OpenBeken web UI File Manager [Elektroda, p.kaczmarek2, post #21031684]

Home Assistant 2024.12 flags “mqtt is an invalid option”—why?

New YAML syntax nests platforms under mqtt: > broker:. Move fan:, switch:, number: and sensor: into separate mqtt: sections or use the GUI MQTT Fan helper [Elektroda, p.kaczmarek2, post #21336878]

How can I map the five Tuya speed codes to percentages?

Use a fan entity with percentage_command_template that converts 0,1,2,3,4 to 0,10,30,50,70 % (or 100 % for code 5) as shown in the sample YAML [Elektroda, 20114003]

What stops the humming noise found in some TRIAC controllers?

The unit uses fixed capacitors, so supply voltage to the motor is sinusoidal; no phase chopping means no audible hum even at 20 % speed [Elektroda, ferbulous, post #20120579]

Can I wire bathroom exhaust fans to it?

Technically yes if the load is under 80 W; however, step regulation often stalls shaded-pole bathroom fans at low speeds, so use ceiling-rated motors only [“HVAC Basics”, 2023].

What happens if the MQTT broker goes offline?

Touch panel control continues locally, but HA status topics stop updating; after reconnection, retained LWT restores availability [Elektroda, 21357864]

3-step procedure to flash OpenBeken safely

  1. Cut 3.3 V trace to TuyaMCU; power WB3S directly.
  2. Connect USB-TTL adapter to 3.3 V, GND, TX, RX.
  3. Upload OpenBK7231T firmware v1.11.1 via BKWriter tool [Elektroda, 20114003]

Is there an edge case where flashing fails?

If you forget to isolate WB3S power, the TuyaMCU holds RX low and flashing stalls at 0 %; disconnecting the MCU resolves the issue [Elektroda, 20114003]

Where can I get spare glass plates or capacitors?

TEQOOZ lists service parts on its support page; a replacement glass panel costs approx. ₹350 plus shipping [TEQOOZ Support, 2024].
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