8ce8162385
- switched to ESP32 board (esp8266 reached OOM) - added few new entities - added Graphical Dashboard "Heizkörper"
ESPHome-Froeling-Lambdatronic_3200
ESHome RS232 to TTL - ESP32 - Read data from Froeling / Lambdatronic 3200
I'm testing this with my Fröling SP Dual. But I assume it should also work for other models that have the Lambdatronic 3200 control unit. Feedback appreciated.
Parts:
Wemos D1 Mini ESP32: https://www.amazon.de/dp/product/B08BTRQNB3
MAX3232 DB9 RS232 TTL converter: https://www.amazon.de/gp/product/B0BNQ41QKQ
| Wemos | TX | RX | 5V | G |
|---|---|---|---|---|
| MAX3232 | RX | TX | VCC | GND |
Connect a RS232 (DB9) cable between "MAX3232 DB9 RS232 TTL converter" and you boiler's mainboard (COM2).
Boiler Settings:
- Click on the user icon
- Enter code "-7"
- Boiler > Modbus Protokoll RTU(1)
- Boiler > use Modbus Protokoll 2014
Home Assistant Dashboard
prerequisites:
- https://experiencelovelace.github.io/ha-floorplan/
- copy all files from /ha_dashboard/* to your Home assistant instance /config/www/froeling/*
- create a card in your dashboard and add the content of "ha_dashboard.yaml" !! Currently, only two panels are provided!! I'm working on the rest. An update will follow.
ESPHome
For an better overview I've splittet up the yaml file into multiple pieces and included them in the main file as a package.
Copy all files from ESPHome/* into you ESPHome config directory and just flash the froeling.yaml. - All other files will be included.