Custom sensor using data from packages

ESPHome
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1

Hi,

I feel like it’s a pretty straightforward thing but still can’t get it working. Please kindly help me.

I have an ESP32S3 board that is loaded with a working firmware. It uses a Github based package:

packages:
  ecodan-heatpump: github://tobias-93/esphome-ecodan-heatpump/heatpump.yaml@main

See repository here: GitHub - tobias-93/esphome-ecodan-heatpump: ESPHome firmware for Ecodan heatpumps

Now, this package exposes a couple of sensors, defined in esphome-ecodan-heatpump/heatpump.yaml at 2fdf15ba675699c0c2ca8c1692a31505cb02cc8f · tobias-93/esphome-ecodan-heatpump · GitHub. How on earth can I reuse those sensors to create my own ones? I’m looking for simple things, like doing a division with two of these.
I tried template sensors with lambda - tells me there is no entity with ID e.g. energy_dhw_cons_yesterday.
I tried homeassistant templates, which would read the value back from HA - gives me NaN as the state

What would be the proper way of doing this kind of things?

2

You will need to add an id key under the name. Then use tht id with lambdas to return and/or manipuate the value of another sensor.

text_sensor:
  - platform: version
    name: ESPHome Version
  - platform: wifi_info
    ip_address:
      name: IP
      id: my_ip
    ssid:
      name: SSID
      id: my_ssd

https://esphome.io/components/sensor/#lambda-calls

3

Not sure what you mean by that. It indeed has a name. Example:

  - platform: template
    name: HMV COP
    id: hmv_cop
    lambda: |-
      float produced = id(energy_dhw_prod_yesterday).state;
      float consumed = id(energy_dhw_cons_yesterday).state;
      ESP_LOGD("Custom", "Produced: %f, consumed=%f", produced, consumed);
      return produced / consumed;
4

try

    lambda: |-
      return id(energy_dhw_prod_yesterday).state / id(energy_dhw_cons_yesterday).state;
5

The ‘compiler’ tells me there is no such entity. That’s my main problem :slight_smile: