A Domoticz plugin to manage Tuya based thermostat devices

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.

Assuming that domoticz directory is installed in your home directory.

cd ~/domoticz/plugins
git clone https://github.com/tixi/Domoticz-Tuya-Thermostat-Plugin
cd Domoticz-Tuya-Thermostat-Plugin
git clone https://github.com/clach04/python-tuya.git
ln -s ~/domoticz/plugins/Domoticz-Tuya-Thermostat-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 SmartThermostat".

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-Thermostat-Plugin directory with ln -s. Example:

cd ~/domoticz/plugins/Domoticz-Tuya-Thermostat-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.

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

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

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.

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

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

• 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

• Details helping to decode thermostat values https://www.domoticz.com/forum/viewtopic.php?t=25965