MCP9600 does not allow filters?

ESPHome
1

I would like to add some averaging filters on the temperature readings from my MCP9600 modules.

However, I keep seeing ‘doesn’t support filters’ message as I try and add them to the yaml.

Am I doing something wrong or is that really the case?
Why should a temperature measurement not support filters?

esphome:
  name: "ktype-sensors-x2"
  friendly_name: Ktype Sensors X2

esp32:
  board: esp32dev
  framework:
    type: arduino

# Enable logging
logger:

# Enable Home Assistant API
api:
  encryption:
    key: "LcIvLu1HrLivYJJ8k0H3="

ota:
- platform: esphome


wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Esphome-Web-3938A0"
    password: "1WEPrZWpvBth"


captive_portal:





# i²c bus DFRobot
i2c:
 sda: 21
 scl: 22
 scan: true
 frequency: 10khz



sensor:
 - platform: mcp9600
   hot_junction:
    name: "Sensor 1"
   #cold_junction:
   #name: "Ambient 1"
   thermocouple_type: K
   address: 0x63
   update_interval: 30s

 - platform: mcp9600
   hot_junction:
    name: "Sensor 2"
   #cold_junction:
   #name: "Ambient 1"  Pimoroni
   thermocouple_type: K
   address: 0x67
   update_interval: 30s
   


# WiFi Signal sensor.
# - platform: wifi_signal
#   name: WiFi Signal
#   update_interval: 60s
2

Maybe show your YAML where you’ve tried adding filters? I’m guessing it might be an indentation issue, since that sensor actually provides multiple values/sensors.

3

Looking at the docs it seems they need to be inline with the name key.

sensor:
 - platform: mcp9600
   hot_junction:
    name: "Sensor 1"
    filters:
      - offset: 2.0
      - multiply: 1.2
   #cold_junction:
   #name: "Ambient 1"
   thermocouple_type: K
   address: 0x63
   update_interval: 30s
4

Thank you.

You are correct.

I wasn’t able to interpret that from the docs.
I was trying to add the filter at the end of the device declaration rather than after the name.

That’s where/when I was seeing the 'doesn’t support filters’ message.

Also, using your advice on the indentation has resulted in success.

Thanks again.

esphome:
  name: "ktype-sensors-x2"
  friendly_name: Ktype Sensors X2

esp32:
  board: esp32dev
  framework:
    type: arduino

# Enable logging
logger:

# Enable Home Assistant API
api:
  encryption:
    key: "LcIvLu1HrLivYJJ8k="

ota:
- platform: esphome


wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Esphome-Web-3938A0"
    password: "1WEPrZWpvBth"


captive_portal:





# i²c bus DFRobot
i2c:
 sda: 21
 scl: 22
 scan: true
 frequency: 10khz



sensor:
 - platform: mcp9600
   hot_junction:
    name: "Sensor 1"
    filters: 
      - median:
         window_size: 5
         send_every: 3
         send_first_at: 1
   #cold_junction:
   #name: "Ambient 1"
   thermocouple_type: K
   address: 0x63
   update_interval: 10s

 - platform: mcp9600
   hot_junction:
    name: "Sensor 2"
    filters: 
      - median:
         window_size: 10
         send_every: 2
         send_first_at: 1
   #cold_junction:
   #name: "Ambient 1"  Pimoroni
   thermocouple_type: K
   address: 0x67
   update_interval: 10s
   


# WiFi Signal sensor.
# - platform: wifi_signal
#   name: WiFi Signal
#   update_interval: 60s