[CB2S/BK7231N] Loratap SC500W-V2N2-YELLOW Smart WiFi Curtain Switch

Question

Hi all, in order to repair my curtain, I've ordered this switch and here are some pictures: It can control a 3 wires curtain and you can also attach an up/down switch to the S1/S2 contacts As you can see, a good old CB2S soldered only on one side to a kind of raiser holding what I supposed to be...

p.kaczmarek2 · Accepted Answer

No problem, those dpIDs are useful already. If you ever change your mind, let me know - I can help. You can also just make a 2MB flash backup and restore it when selling house.

p.kaczmarek2 · Answer

This is most likely TuyaMCU device. This may be tricky to convert but end result will be very good, as the main shutter logic is on the MCU , and not on the WiFi module.

Here is a broad TuyaMCU guide: TuyaMCU flashing, setup and configuration guide - configure dpIDs for Home Assistant

Please familiarize yourself with it and then we can try to convert this device to work with OBK. I will guide you step by step.

Are you able to find the AMS1117-3.3V or the step down converter on this board?

snakesrules94 · Answer

Hello,i can't find the former voltage regulator for 3.3V and not skilled enough to find the other voltage regulator/dropdown components. Here is a picture of the board : I spent some time to explore the Tuya dev website and i've extracted the following info about this module :Code: text Expand Select all Copy to clipboard{   modelId: 000003pv54,   services: [     {       actions: [],       code: ,       description: ,       events: [],       name: 默认服务 (Default Service),       properties: [         {           abilityId: 1,           accessMode: rw,           code: control,           description: ,           extensions: {             iconName: icon-a_power,             attribute: 1280           },           name: 一路窗帘开关 (All the way curtain switch),           typeSpec: {             type: enum,             range: [               open,               stop,               close             ]           }         },         {           abilityId: 8,           accessMode: rw,           code: control_back,           description: ,           extensions: {             iconName: icon-dp_loop,             attribute: 1024           },           name: 电机反转 (Motor reverse),           typeSpec: {             type: enum,             range: [               forward,               back             ]           }         },         {           abilityId: 10,           accessMode: rw,           code: tr_timecon,           description: ,           extensions: {             iconName: icon-dp_time2,             attribute: 1024           },           name: 行程时间设置 (Travel time settings),           typeSpec: {             type: value,             max: 120,             min: 1,             scale: 0,             step: 1,             unit: s           }         }       ]     }   ] }Is this already a good start point ?

p.kaczmarek2 · Answer

I asked about LDO because I was considering doing UART packets capture, but with the dpIDs you extracted, this is no longer needed. I think you can flash OpenBeken and then we will together configure dpID to channel mappings for your device.

snakesrules94 · Answer

Hi and thanks for your support.After some thinking, I think I will stay with Tuya for this one as it will be linked to my main garden curtain (I don't know the right translation but here is a sample picture: )In the case of we decide to leave/sell the house, the device would be linked to my WiFi network/mqtt/HA instance and it could be difficult for the next owners to use it if they're not into that tech stuff as the curtain is not something I will take with me if I should leave the house.It would be, I guess, easier to unbind/rebind the device to Smartlife APP than changing all the network config/dependency.Anyway, the dpId will maybe be useful for someone else with the same switch in case of OBK conversion

surfcu · Answer

For anyone trying to use this with ESPhome, this can be flashed with Tuya Cloudcutter.

After flashing, the following configuration can be used;


esphome:
  name: panjur1
  friendly_name: panjur1

bk72xx:
  board: generic-bk7231n-qfn32-tuya

# Enable logging
logger:

# Enable Home Assistant API
api:
  encryption:
    key: ""

ota:
  - platform: esphome
    password: ""

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Panjur1 Fallback Hotspot"
    password: ""

captive_portal:

text_sensor:
  - platform: libretiny
    version:
      name: LibreTiny Version

uart:
  rx_pin: RX1
  tx_pin: TX1
  baud_rate: 115200

tuya:
  # DPIDs processed from schema model: 000003pv54

select:
  - platform: tuya
    enum_datapoint: 1
    name: (Unconfirmed) Control
    optimistic: true
    options:
      0: Open
      1: Stop
      2: Close
  - platform: tuya
    enum_datapoint: 8
    name: (Unconfirmed) Control Back
    optimistic: true
    options:
      0: Forward
      1: Back

number:
  - platform: tuya
    number_datapoint: 10
    name: (Unconfirmed) Tr Timecon
    unit_of_measurement: s
    min_value: 1
    max_value: 120
    step: 1

[CB2S/BK7231N] Loratap SC500W-V2N2-YELLOW Smart WiFi Curtain Switch

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