Wavin Sentio in ESPHome
This is a simple Esp8266 ESPHome interface for Wavin Sentio enabling you to control your heating from Home Assistant.
Disclaimer
Do this at your own risk ! You are interfacing with hardware that you can potentially damage if you do not connect things as required ! Using the hardware and code presented here is done at you own risk. The hardware has been tested on Wavin AHC9000, Wavin Sentio and Nilan Comfort 300 without issues.
Hardware
Look here: https://github.com/nic6911/ESP32_Modbus_Module
Software
This is an ESPHome implementation of Wavin Sentio modbus interface - look at the example below to see how its used. I made an esphome component for the Sentio supporting the code below - look here: https://github.com/nic6911/esphome_components/tree/Wavin_Sentio
Documentation
Look in the documentation folder and more specifically from page 140 in "Sentio Technical-Handbook Sept 21.pdf" All other documentation in the folder is complementary
Example:
########################################################################################
# #
# WAVIN SENTIO FLOOR HEATING CONTROLLER SOFTWARE FOR HOME ASSISTANT #
# #
# Code developed by : Mogens Groth Nicolaisen #
# #
# https://github.com/heinekmadsen/esphome_components/tree/main/components/wavinAhc9000 #
# #
# Hardware by : Mogens Groth Nicolaisen https://github.com/nic6911/Wavin-AHC-9000-mqtt #
# #
########################################################################################
########################################################################################
# CONFIGURATION PART OF YOUR CHOICE :) #
########################################################################################
substitutions:
device_name: 'wavin_sentio'
friendly_name: 'Sentio'
log_level: DEBUG
# UPDATE TIME (GATEWAY)
update_interval: 10s
# CHANNEL ID´S
channel_1: Bryggers
channel_2: Entré
channel_3: Ellens værelse
channel_4: Arnes værelse
channel_5: Mors kontor
channel_6: Stue/KA
channel_7: Bad voksne
channel_8: Soveværelse
channel_9: Bad børn
channel_10: <Unused>
channel_11: Fars kontor
channel_12: <Unused>
channel_13: <Unused>
channel_14: <Unused>
channel_15: <Unused>
channel_16: <Unused>
# PIN DEFINITIONS (Should in most cases not be changed)
rx_pin: '20'
tx_pin: '21'
# WiFi settings
ssid_set: !secret wifi_ssid
password_set: !secret wifi_password
########################################################################################
# CODE BELOW SHOULD NOT BE CHANGED #
########################################################################################
esphome:
name: ${device_name}
esp32:
board: esp32-c3-devkitm-1
framework:
type: arduino
# Enable logging
logger:
baud_rate: 0
# Enable Home Assistant API
api:
ota:
wifi:
ssid: ${ssid_set}
password: ${password_set}
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Wavin Fallback Hotspot"
captive_portal:
uart:
rx_pin: ${rx_pin}
tx_pin: ${tx_pin}
baud_rate: 19200
id: uart_modbus
parity: NONE
stop_bits: 1
modbus:
id: modbus_id
uart_id: uart_modbus
flow_control_pin: 10
modbus_controller:
id: sentio_modbus_controller
address: 1
modbus_id: modbus_id
update_interval: ${update_interval}
# Uncomment the active channels on your Wavin Sentio
packages:
remote_package:
url: https://github.com/nic6911/esphome_components
ref: main
files:
- components/sentio/configs/basic.yaml # REQUIRED FOR WAVIN SENTIO
- components/sentio/configs/channel_01.yaml
- components/sentio/configs/channel_02.yaml
- components/sentio/configs/channel_03.yaml
- components/sentio/configs/channel_04.yaml
- components/sentio/configs/channel_05.yaml
- components/sentio/configs/channel_06.yaml
- components/sentio/configs/channel_07.yaml
- components/sentio/configs/channel_08.yaml
- components/sentio/configs/channel_09.yaml
#- components/sentio/configs/channel_10.yaml #If you have combined channels you need to comment one out like I have here where my channel 9+10 has only 1 thermostat
- components/sentio/configs/channel_11.yaml
#- components/sentio/configs/channel_12.yaml
#- components/sentio/configs/channel_13.yaml
#- components/sentio/configs/channel_14.yaml
#- components/sentio/configs/channel_15.yaml
#- components/sentio/configs/channel_16.yaml