Not ready for "end users". See configuring below.

What is this?

A library and esphome configuration with which you can control an Itho fan, when you have a setup with an Itho RFT-CO2. One that looks like:

This software is meant to control your fan from within Home Assistant:

Hardware

You'll need:

An ESP8266 of some kind. (ESP32 might work as well, but you'll have to figure out the pinout for yourself)
A CC1101 module that works on 868 MHz. Mine looks like this:

Then connect:

ESP gpio num	ESP pin label	CC1101 pin
Vcc	3.3v	Vcc
Gnd	Gnd	Gnd
GPIO13	D7	MOSI
GPIO14	D5	SCLK
GPIO12	D6	MISO
GPIO4	D2	GDO2*
GPIO5	D1	GDO0
GPIO15	D8	CSn

*gdo2 is not (yet) used in this library.

Configuring

Wifi credentials

You will need to add a file "secrets.yaml" to the main directory. You need to specify some stuff here:

wifi_ssid: "secret wifi name"
wifi_password: "secret password"
api_password: "a password that will give access to your ESP"
ap_password: "another password that will give access to your ESP"

Fan and remote addresses

For now, this is not ready for "end users". That's because the library needs to be configured with a "start byte", and the addresses of the Itho fan and remote. If I figure out a way to make this easy for you, I will update this page. Hint, you'll have to update this line in your ithoFan.yaml:

auto fan = new IthoFan(5, 0x1C, <fan address>, <remote address>);

You may be able to find these addresses by running the firmware and checking the debug log. You will start to see messages like:

Status message: Sender: <fan address> Receiver: <remote address> Status: 2 Timer: 0

Check whether this is really your fan, by manually changing the mode and/or timer on your remote and see if a message appears with the correct mode / timer. Then edit ithoFan.yaml with these addresses.

Compiling

Make sure you have Python installed and install esphome (if you haven't already):

pip3 install esphome

Then run either

esphome run ithoFan.yaml

or, in my case on windows: