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, rice cookers (not joking), and solar systems that support ECHONETLite.

The current functionality is limited to a few ECHONETLite classes, notably HVAC but it can easily be extended to any ECHONETlite classes required.

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

Version 2.0.0 of this libray was rebuilt to use asyncio for better compatability with home assistant.

It is designed to work with Python 3.9.5+

Simplest way to install is to use pip:

pip install pychonet

from aioudp import UDPServer
from pychonet import Factory
from pychonet import ECHONETAPIClient as api
from pychonet import HomeAirConditioner
from pychonet import EchonetInstance
udp = UDPServer()
loop = asyncio.get_event_loop()
udp.run("0.0.0.0", 3610, loop=loop)
server = api(server=udp, loop=loop)

await server.discover('192.168.1.6')

await server.getAllPropertyMaps('192.168.1.6', 1, 48, 1)

Paramaters include the port listener, and EOJGC, EOJCC, and EOJCI codes.

aircon = Factory("192.168.1.6",server, 1, 48, 1)

aircon = HomeAirConditioner("192.168.1.6", server)

await aircon.on()
await aircon.off()
await aircon.getOperationalStatus()
{'status': 'off'}

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

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

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

Note - your HVAC may not support all fan speeds.

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

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

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

await aircon.update(0x80)

NOTE: For Home Assistant users there is a dedicated repo that can be installed via HACS that can provide custom components for discovered ECHONETlite devices such as Mitsubishi airconditioners: (https://github.com/scottyphillips/echonetlite_homeassistant)

'example_async.py' gives you a boilerplate asyncio program that will discover your ECHONETLite instance and return information about supported services.

Thanks to Jason Nader for all the quality of life updates to the codebase and doco.

Thanks to khcnz (Karl Chaffey) and gvs for helping refector the old code and contributing to testing.

Thanks to Dick Swart, Masaki Tagawa, Paul, khcnz, Kolodnerd, Leonunix, and Alfie Gerner for each contributing code updates to this library.

Thanks to Jeffro Carr who inspired me to write my own native Python ECHONET library for Home Assistant. Some ideas in his own repo got implemented in my own code. (https://github.com/jethrocarr/echonetlite-hvac-mqtt-service.git)

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

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