pychonet 1.0.3

A library for interfacing via the ECHONETlite protocol.

Pychonet

A library for interfacing with the ECHONETlite protocol as commonly used in Japan. Useful for interfacing to many interesting devices such as HVACs, electric car chargers and solar systems that support ECHONETLite.

It is specifically designed for use with Home Assistant, and its functionality is currently limited to HVAC systems, but it can easily be extended to other ECHONETlite applications and be used as a general purpose library.

The basic boilerplate EchoNetInstance can be used to provide raw connectivity to any compatible device but it is up to the developer to create useful classes. Any additions to the library are welcome.

It is designed to work with Python 3.9.5+

Instructions

Simplest way to install is to use pip:

pip install pychonet

Basic usage

Discover a list of ECHONETlite instances using:

import pychonet as echonet
echonet_instances = echonet.discover()
print(echonet_instances)
[{'netaddr': '192.168.1.6', 'eojgc': 1, 'eojcc': 48, 'eojci': 1, 'group': 'Air conditioner-related device group', 'code': 'Home air conditioner'}]

Create a HVAC ECHONETlite instance

aircon = echonet.HomeAirConditioner("192.168.1.6")

### Turn HVAC on or off:
```python
aircon.on()
aircon.off()
aircon.getOperationalStatus()
{'status': 'off'}

Set or Get a HVACs target temperature

aircon.setOperationalTemperature(25)
aircon.getOperationalTemperature()
{'set_temperature': 25}

Set or Get a HVACs mode of operation:

supported modes =  'auto', 'cool', 'heat', 'dry', 'fan_only', 'other'

aircon.setMode('cool')
aircon.getMode()
{'mode': 'cool'}

Set or Get a HVACs fan speed:

Note - your HVAC may not support all fan speeds.

supported modes = 'auto', 'minimum', 'low', 'medium-Low', 'medium', 'medium-high', 'high', 'very high', 'max'

aircon.setFanSpeed('medium-high')
aircon.getFanSpeed()
{'fan_speed': 'medium-high'}

Get HVAC attributes at once:

aircon.update()
{'status': 'On', 'set_temperature': 25, 'fan_speed': 'medium-high', 'room_temperature': 25, 'mode': 'cooling'}

Using this library with Home Assistant

NOTE: For Home Assistant users there is now a dedicated repo for the related Home Assistant 'Mitsubishi' custom component that makes use of this Python library: (https://github.com/scottyphillips/mitsubishi_hass)

'example_hvac.py' gives you an idea how to drive a HVAC directly from Python using this library.

Thanks

Thanks to Jeffro Carr who inspired me to write my own native Python ECHONET library for Home Assistant. I could not get his Node JS Docker container to work properly on Hass.io :-) Some ideas in his own repo got implemented in my own code. (https://github.com/jethrocarr/echonetlite-hvac-mqtt-service.git)

Also big thanks to Futomi Hatano for open sourcing a high quality and extremely well documented ECHONET Lite library in Node JS that formed the basis of my reverse engineering efforts. (https://github.com/futomi/node-echonet-lite)

License

This application is licensed under an MIT license, refer to LICENSE for details.

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