{"NAME":"Arlec Hub","GPIO":[0,107,0,108,0,0,0,0,0,0,0,0,0],"FLAG":0,"BASE":54}

1. Initially pair the hub and all sensors using the Tuya app

2. Flash the hub using a serial connection to the TYWE3S module with a standard Tasmota Image.

   

   1. Hold GPIO0 to GND during power on to enter programming mode
   2. Connect V+, TX, RX, & GND
   3. IMPORTANT: Hold RSTBLE to GND during the flashing process to disable the Bluetooth module

3. Set up MQTT

Method 1 - Just BLE Data

1. Go to the console and issue these commands:

Rule1 ON TuyaReceived#CmndData DO var1 %value% ENDON ON TuyaReceived#Cmnd==54 DO Publish BleBridge/tele/command %var1% ENDON
Rule1 1

1. Set up Node RED to listen on the BleBridge/tele/command MQTT topic then create a new function to process the messages using this code

var inputstr = """"
inputstr = msg.payload.slice(6);
msg.payload = inputstr;
return msg;

1. The output code will be something like this. For example for a door or motion sensor
   • 055B010100 - Sensor idle
   • 055B010101 - Sensor triggered *0564020400000064 - Battery level 100% (64 in hex)

For the battery level for example

• 05 identifies the device number
• 640204 identifies the DPID
• 00000064 identifies the data

Method 2 - All TuyaReceive Data

This method will send all TuyaReceived messaages to MQTT for processing by Node RED.

1. Goto the Tasmota console and issue the following command:

SetOption66 1

1. Create a Node RED flow and subscribe an “MQTT Input” object to “tele/SENSORHUB/RESULT”. Replace “SENSORHUB” with your Tasmota %TOPIC% name.
2. Payload is a string so we need to convert it to JSON, add a json node, selecting ‘Convert between JSON String & Object, check the ‘Format JSON string’ check box.
3. Link the JSON node into a function node with the following script contents. The function will have 2 outputs, one for MQTT and one for Debug.

// Get Message Payload
var payload = msg.payload

// Ignore Everything but Cmnd 54
if(payload.TuyaReceived.Cmnd != "54") { return }

// Extract the Sensor Hub ID
var Data            = payload.TuyaReceived.Data;
var sensorHubID     = Data.substr(0,12)

// Extract the Sensor Data Values
var CmndData        = payload.TuyaReceived.CmndData;
var updateID        = CmndData.substr(0,6);     // Each sensor+battery update shares this string
var sensorNumber    = parseInt(CmndData.substr(6,2),16);
var sensorType      = CmndData.substr(8,6);
var sensorValue     = CmndData.substr(14);

// Processing
switch(sensorType) {
    case "4F0204":
        sensorType = "TEMP"
        fahrenheit = parseInt(sensorValue,16)
        celsius = (fahrenheit - 32) * 0.555555555555555
        sensorValue = parseInt(celsius)
    break;
    case "4E0204":
        sensorType = "HUMIDITY"
        humidity = parseInt(sensorValue,16)
        sensorValue = parseInt(humidity)
    break;
    case "630204":
        sensorType = "INTERVAL"
        value = parseInt(value, 16) / 60    // Returns the interval in minutes at which the temp/humidity sensor will send an update. Interval is changed by pressing the button on the sensor
    break;
    case "5B0101":
        sensorType = "CONTACT"
        sensorValue = parseInt(sensorValue)
   
    break;
    case "5C0101":
        sensorType = "MOTION"
        sensorValue = parseInt(sensorValue)
    break;
    case "640204":
        sensorHubID = (parseInt("55AA0136000B",16) - 3).toString(16).toUpperCase()
        sensorType = "BATTERY"
        percentage = parseInt(sensorValue,16)
        sensorValue = percentage
    break;
}

var topic = "SENSORHUB/BLE" + sensorNumber + "/" + sensorType
var mqttMessage = {  payload: sensorValue, topic:topic };
var debugMessage = { mqtt           : mqttMessage,
                     sensorhubid    : sensorHubID,
                     sensornumber   : sensorNumber,
                     sensortype     : sensorType,
                     sensorvalue    : sensorValue,
                     updateid       : updateID,
                     data           : Data,
                     cmnddata       : CmndData };
return [mqttMessage,debugMessage];

1. Create an “MQTT Out” node. No topic required, it is dynamically set in the function. Connect it to the top “Dot” on the Function node.
2. Create an “Debug” node. Connect it to the bottom “Dot” on the Function node.
3. The following can be used to create the home assistant sensors

binary_sensor:
  - platform: mqtt
    unique_id: patio_door
    payload_on: 1
    payload_off: 0
    name: "Patio Door"
    state_topic: "SENSORHUB/BLE3/CONTACT"
    device_class: door
    qos: 1
  - platform: mqtt
    unique_id: lounge_motion
    name: "Lounge Room Motion"
    payload_on: 1
    payload_off: 0
    state_topic: "SENSORHUB/BLE4/MOTION"
    device_class: motion
    qos: 1
sensor:
  - platform: mqtt
    unique_id: lounge_motion_battery
    name: "Lounge Room Motion Battery"
    state_topic: "SENSORHUB/BLE4/BATTERY"
    device_class: battery
    qos: 1
  - platform: mqtt
    unique_id: patio_door_battery
    name: "Patio Door Battery"
    state_topic: "SENSORHUB/BLE3/BATTERY"
    device_class: battery
    qos: 1
  - platform: mqtt
    unique_id: lounge_temp
    name: "Lounge Temperature"
    state_topic: "SENSORHUB/BLE7/TEMP"
    device_class: temperature
    unit_of_measurement: "°C"
    qos: 1
  - platform: mqtt
    unique_id: lounge_humidity
    name: "Lounge Humidity"
    state_topic: "SENSORHUB/BLE7/HUMIDITY"
    device_class: humidity
    unit_of_measurement: "%"
    qos: 1
  - platform: mqtt
    unique_id: lounge_temp_battery
    name: "Lounge Temperature Battery"
    state_topic: "SENSORHUB/BLE7/BATTERY"
    device_class: battery
    qos: 1

References: https://www.bunnings.com.au/arlec-grid-connect-smart-home-sensor-kit_p0148570 https://tasmota.github.io/docs/Commands/#setoption66