Troubleshooting and Fixing Config Errors in Home Assistant

General
1

I’ve been diving into Home Assistant lately and it’s been a fantastic journey, but not without its bumps. One issue I encountered was a configuration error in my binary_sensor.yaml file. Let me walk through what happened and how I resolved it, in case anyone else is facing similar issues.

The Problem

I was trying to set up some custom binary sensors to monitor network ping times. Here’s the code I initially used:

yaml

  • platform: template
    sensors:
    name: “LAN Ping”
    icon: “mdi:speedometer”
    unit_of_measurement: “ms”
    state: “{{ state_attr(‘binary_sensor.Router_Ping’, ‘round_trip_time_avg’)|round(2) }}”
  • platform: template
    sensors:
    name: “WAN Ping”
    icon: “mdi:speedometer”
    unit_of_measurement: “ms”
    state: “{{ state_attr(‘binary_sensor.google_dns_ping’, ‘round_trip_time_avg’)|round(2) }}”

But I kept getting errors like:

Invalid config for [binary_sensor.template]: expected dictionary for dictionary value @ data[‘sensors’][‘icon’]. Got ‘mdi:speedometer’

The Solution

After some research and trial and error, I realized that the structure of the sensors section wasn’t correct. Each sensor should be defined as a separate entry within a list. Here’s the corrected version:

yaml

  • platform: template
    sensors:
    • name: “LAN Ping”
      icon: “mdi:speedometer”
      unit_of_measurement: “ms”
      state: “{{ state_attr(‘binary_sensor.Router_Ping’, ‘round_trip_time_avg’)|round(2) }}”
    • name: “WAN Ping”
      icon: “mdi:speedometer”
      unit_of_measurement: “ms”
      state: “{{ state_attr(‘binary_sensor.google_dns_ping’, ‘round_trip_time_avg’)|round(2) }}”

Key Takeaways

  1. Structure Matters: Make sure each sensor is properly indented and listed under the sensors key.
  2. Lists vs. Dictionaries: When defining multiple sensors, use a list of dictionaries rather than separate platform entries.
  3. Validation Tools: Use the Home Assistant Config Validator to catch errors early.

This fix resolved the configuration errors, and my sensors are now working as expected. It was a bit frustrating at first, but problem-solving like this is part of the learning curve and makes the end result all the more satisfying!

If anyone else has encountered similar issues or has tips for common configuration pitfalls, I’d love to hear about them. Happy automating! :rocket: