Adding sensor with template

Configuration
1

I am trying to measure tank level in a rain tank with a atom lite. Got the volt as a entity, the i am trying to calculate in configuration .yaml with this code
sensor:

sensor: 
  - platform: template
    sensors:
      tank_litres:
        value_template: >
          {% set voltage = states('sensor.tank_voltage') | float %}
          {{ ((voltage - 0.41) * 1800) | round(0) }}
      unit_of_measurement: l
      friendly_name: Volym tank

sensor.tank_voltage
is the entity name for the voltage
But i renders in many fault messages, can somebody give me some light on this matter.
THX AndersPreformatted text

2

YAML is dependent on proper indentation. What you posted can’t be evaluated for proper indentation because it’s unformatted.

Please correct the Template Sensor’s formatting by selecting it and clicking the </> icon in the forum’s editing menu.

Post the messages.

3

THx, hope i did it correctly, I am a rookie

4

Should be a string: Template - Home Assistant
So unit_of_measurement: "L"

5

Thanks,
now the error message says:

The system cannot restart because the configuration is not valid: Invalid config for [sensor.template]: expected dictionary for dictionary value @ data[‘sensors’][‘friendly_name’]. Got ‘Volym tank’ expected dictionary for dictionary value @ data[‘sensors’][‘unit_of_measurement’]. Got ‘L’. (See ?, line ?).

…

6 
sensor: 
  - platform: template
    sensors:
      tank_litres:
        value_template: >
          {% set voltage = states('sensor.tank_voltage') | float(0) %}
          {{ ((voltage - 0.41) * 1800) | round(0) }}
        unit_of_measurement: l
        friendly_name: Volym tank
7

Thank you so much
Worked perfectly!

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