NOTE I'm no longer using these devices so this is not actively maintained.

Domoticz-Tuya-SmartPlug-Plugin

A Domoticz plugin to manage Tuya Smart Plug (single and multi socket device)

ONLY TESTED FOR Raspberry Pi

With Python version 3.5 & Domoticz version 4.9700 (stable)

Prerequisites

This plugin is based on the pytuya Python library. For the installation of this library, follow the Installation guide below. See https://github.com/clach04/python-tuya/ for more information.

For the pytuya Python library, you need pycrypto. pycrypto can be installed with pip:

pip3 install pycrypto

See https://pypi.org/project/pycrypto/ for more information.

Installation

Assuming that domoticz directory is installed in your home directory.

cd ~/domoticz/plugins
git clone https://github.com/tixi/Domoticz-Tuya-SmartPlug-Plugin
cd Domoticz-Tuya-SmartPlug-Plugin
git clone https://github.com/clach04/python-tuya.git
ln -s ~/domoticz/plugins/Domoticz-Tuya-SmartPlug-Plugin/python-tuya/pytuya pytuya
# restart domoticz:
sudo /etc/init.d/domoticz.sh restart

In the web UI, navigate to the Hardware page. In the hardware dropdown there will be an entry called "Tuya SmartPlug".

Known issues

1/ python environment

Domoticz may not have the path to the pycrypto library in its python environment. In this case you will observe something starting like that in the log:

failed to load 'plugin.py', Python Path used was
Module Import failed, exception: 'ImportError'

To find where pycrypto is installed, in a shell:

pip3 show pycrypto

The Crypto directory should be present in the directory indicated with Location.

when you have it, just add a symbolic link to it in Domoticz-Tuya-SmartPlug-Plugin directory with ln -s. Example:

cd ~/domoticz/plugins/Domoticz-Tuya-SmartPlug-Plugin
ln -s /home/pi/.local/lib/python3.5/site-packages/Crypto Crypto

2/ Tuya app

The tuya app must be close. This limitation is due to the tuya device itself that support only one connection.

3/ Alternative crypto libraries

PyCryptodome or pyaes can be used instead of pycrypto.

Updating

Like other plugins, in the Domoticz-Tuya-SmartPlug-Plugin directory:

git pull
sudo /etc/init.d/domoticz.sh restart

Parameters

Parameter	Value
IP address	IP of the Smart Plug eg. 192.168.1.231
DevID	devID of the Smart Plug
Local Key	Local Key of the Smart Plug
DPS	1 for single socket device and a list of dps separated by ';' for multisocket device eg. 1;2;3;7
DPS group	None for single socket device and a list of list of dps separated by ':' for multisocket device eg. 1;2 : 3;7
DPS always ON	None for single socket device and a list of dps separated by ; for multisocket device eg. 1;2
Debug	default is 0

DPS should only includes values that correspond to plug's dps id. Be careful some devices also have timers in the dps state.

DPS group can be used to group multiple sockets in one Domoticz switch.

DPS always ON can be used to force some sockets to be always on (usb for instance).

Helper scripts get_dps.py turnON.py and turnOFF.py can help:

to determine the dps list
to check that the needed information are valid (i.e. devID and Local Key) before using the plugin.

DevID & Local Key Extraction

Recommanded method: https://github.com/codetheweb/tuyapi/blob/master/docs/SETUP.md

All the information can be found here: https://github.com/clach04/python-tuya/

Acknowledgements

Special thanks for all the hard work of clach04, codetheweb and all the other contributers on python-tuya and tuyapi who have made communicating to Tuya devices possible with open source code.
Domoticz team