Controlling ITHO Mechanical Ventilation

:alert: This repository was updated after too many years of being stale :alert:

I've removed everything that wasn't working any more and provided a more clear way how to add this.

For previous notes, please dive into the older commits :)

Requirements

• An ESP8266 (or compatible)
• A C1101 board (including coil)
• Some tinkering see Mechanics
• Manually placing some files inside of Home Assistants /config/esphome directory

How-to using Home Assistant

Ensure you have the hardware ready (Mechanics) and the esphome add-on installed

• Copy the directory structure of config into HA's /config (or manually ensure you have the dir ITHO and it contents present in /config/esphome and start configuring from the UI
• See the sample contents in /config/esphome/itho.yaml for some idea of what is neccesary (obviously needs keys and secrets changed)
• Build and install on the ESP of you choice from Home Assistant
• Go into HA, choose integrations and add your ITHO (it should auto-discover it).
• If everything goes well, you'll see switch.fansend... and quiet a few others popping up.
• Enjoy!

Current status:

• Sending High/Medium/Low and the Timers work
• Reading state and indicative time (not counting down (yet) - should HA or ESPhome do that?)

ESPHome ITHO control

Trying to get ESPHome to mimic what is comprised in

• https://github.com/jodur/ESPEASY_Plugin_ITHO/blob/master/_P145_Itho.ino
• https://github.com/adri/IthoEcoFanRFT / https://github.com/supersjimmie/IthoEcoFanRFT

Mechanics

Wiring schema used

Connections between the CC1101 and the ESP8266 or Arduino:
CC11xx pins    ESP pins Arduino pins  Description
*  1 - VCC        VCC      VCC           3v3
*  2 - GND        GND      GND           Ground
*  3 - MOSI       13=D7    Pin 11        Data input to CC11xx
*  4 - SCK        14=D5    Pin 13        Clock pin
*  5 - MISO/GDO1  12=D6    Pin 12        Data output from CC11xx / serial clock from CC11xx
*  6 - GDO2       04=D2    Pin  2        Programmable output
*  7 - GDO0       ?        Pin  ?        Programmable output
*  8 - CSN        15=D8    Pin 10        Chip select / (SPI_SS)

Dependencies

• Home Assistant
• ESPHome
• https://github.com/CoMPaTech/esphome_itho