Step-by-Step guide for adding Tuya-bulbs, Wi-Fi smart LED (Smart Life app) to OH2 using tuya-mqtt.js by AgentK

Tutorials & Examples
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247

My adventures with openhab and LSC Smart Connect lightbulb:

Install openhab3
----------------

sudo apt-get install openjdk
wget -qO - 'https://openhab.jfrog.io/artifactory/api/gpg/key/public' | sudo apt-key add -
sudo apt-get install apt-transport-https
echo 'deb https://openhab.jfrog.io/artifactory/openhab-linuxpkg stable main' | sudo tee /etc/apt/sources.list.d/openhab.list
sudo apt-get update && sudo apt-get install openhab
sudo apt-get install openhab-addons
Navigate with a web browser to http://<ip-address>:8080

Install mosquitto
-----------------
sudo opt-get install mosquitto
sudo systemctl mosquitto restart

Install node/npm
----------------
sudo apt-get install nodejs
sudo apt-get install npm

Install tuya-mqtt
-----------------
cd /opt
sudo git clone https://github.com/TheAgentK/tuya-mqtt
sudo cd tuya-mqtt
sudo npm install
sudo cp config.json.sample config.json
nano devices.conf (see next step)

example:

[
  {
    name: 'LSC-A60-RGB-CCT 1',
    id: 'bfa4875da7d3c05f459aof',
    key: '7cdbc8a0c742715b',
    version: '3.3'
  }
]



Install modfied lsc app
-----------------------

Sideload https://mega.nz/file/2V8UlDwC#9f0_M6Af_tMHgXR8lionNA6ScFM82EZUae4YLBiUzy4
Login, select a device, press menu, Device info, get device id and localkey
Add to devices.conf

Install MQQT Binding
--------------------
Open openhab
Add thing, install binding MQQT Binding
Add a MQQT Broker, set ip to 127.0.0.1 (mosquitto)

Run tuya-mqtt in debug
----------------------
cd /opt/tuya-mqtt
DEBUG=tuya-mqtt:* node tuya-mqtt.js
You can now use the app and see the commands + payload

LSC-A60-RGB-CCT
---------------
Add a Generic MQQT Thing eg. LSC-A60-RGB-CCT 1, select MQQT Broker as bridge.
Add folowing channels:

• On/Off (switch)

  State: tuya/lsc-a60-rgb-cct_1/dps/20/state
  Command: tuya/lsc-a60-rgb-cct_1/dps/20/command 
  On value: true
  Off value: false
  
• Brightness (number)
  State: tuya/lsc-a60-rgb-cct_1/dps/22/state
  Command: tuya/lsc-a60-rgb-cct_1/dps/22/command 
  Min value: 10
  Max value: 1000
 
• Whiteness (number)
  State: tuya/lsc-a60-rgb-cct_1/dps/23/state
  Command: tuya/lsc-a60-rgb-cct_1/dps/23/command 
  Min value: 10
  Max value: 1000
 
• Color (string)
   First copy RGBToColorString.js and ColorStringToRGB.js to /etc/openhab/transform

colorStringToRGB.js:

(function(i) {
    var re = /.*([a-fA-F0-9]{4})([a-fA-F0-9]{4})([a-fA-F0-9]{4}).*/i;
	var r = i.match(re);
	if (r === null||r.length===0)
	return i;
	
	var one = Number('0x' + r[1]);
	var two = Number('0x' + r[2]) / 10;
	var three = Number('0x' + r[3]) / 10;
	return one+','+two+','+three;
})(input);

RGBToColorString.js:

function pad(num, size) {
    num = num.toString();
    while (num.length < size) num = "0" + num;
    return num;
}

(function(i) {
    var r = i.split(',');
	if (r === null||r.length!==3)
	return i;
	
	var one = Number(r[0]) ;
	var two = Number(r[1]) * 10;
	var three = Number(r[2]) * 10;
	return pad(one.toString(16), 4) + pad(two.toString(16), 4) + pad(three.toString(16), 4);
})(input);

   State: tuya/lsc-a60-rgb-cct_1/dps/24/state
   Command: tuya/lsc-a60-rgb-cct_1/dps/24/command
   Transformation Out: JS:RGBToColorString.js
   Transformation In: JS:colorStringToRGB.js

• Mode (switch)
   Command: tuya/lsc-a60-rgb-cct_1/dps/21/command
   State: tuya/lsc-a60-rgb-cct_1/dps/21/state
   Off value: colour
   On value: white
   Has another value: scene

• Scene (string)
  State: tuya/lsc-a60-rgb-cct_1/dps/25/state
  Command: tuya/lsc-a60-rgb-cct_1/dps/25/command 

Install tuya-mqtt as service
----------------------------

cd /lib/systemd/system/
sudo touch tuyaapi-mqtt.service
echo [Unit] | sudo tee -a tuyaapi-mqtt.service
echo Description=tuyaapi-mqtt | sudo tee -a tuyaapi-mqtt.service
echo After=network-online.target | sudo tee -a tuyaapi-mqtt.service
echo Wants=network-online.target | sudo tee -a tuyaapi-mqtt.service
echo | sudo tee -a tuyaapi-mqtt.service
echo [Service] | sudo tee -a tuyaapi-mqtt.service
echo ExecStart=/usr/bin/node /opt/tuya-mqtt/tuya-mqtt.js | sudo tee -a tuyaapi-mqtt.service
echo Restart=always | sudo tee -a tuyaapi-mqtt.service
echo User=openhab | sudo tee -a tuyaapi-mqtt.service
echo Group=openhab | sudo tee -a tuyaapi-mqtt.service
echo Environment=PATH=/usr/bin/ | sudo tee -a tuyaapi-mqtt.service
echo Environment=NODE_ENV=production | sudo tee -a tuyaapi-mqtt.service
echo WorkingDirectory=/opt/tuya-mqtt | sudo tee -a tuyaapi-mqtt.service
echo | sudo tee -a tuyaapi-mqtt.service
echo [Install] | sudo tee -a tuyaapi-mqtt.service
echo WantedBy=multi-user.target | sudo tee -a tuyaapi-mqtt.service
echo Alias=tuyaapi-mqtt.service | sudo tee -a tuyaapi-mqtt.service
sudo chmod 644 /lib/systemd/system/tuyaapi-mqtt.service
sudo systemctl daemon-reload
sudo systemctl enable tuyaapi-mqtt.service
sudo systemctl start tuyaapi-mqtt.service
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