Time Calculation in Home Assistant (sensor & Helper)

Configuration
1

Dear Community (-wizzards :slight_smile: ) i have a question concerning about a sensor time calcultaion.

Helper:
input_datetime.gewenste_aankomsttijd

What I want to do is the following.
I want to specify a hour & minutes in input_datetime helper (no date only hours and minutes);

Than I want to take the minutes that the waze_travel_time from my home to the destination (Lego Store):

- platform: template
  sensors:
  type - platform: waze_travel_time
  name: naarlegostore
  origin: 51.15922736431498, 4.139082944514981
  destination: 51.224295996914464, 4.501470432630029
  region: 'EU'or paste code here

This gives me the minutes

So what I want to know: what code do I use to substract the minutes I receive from the waze sensor from the hours stated in the helper?

- platform: template
  sensors:  
      theoretisch_vertrek_min:
        value_template: >
          {{% set minutes = states('sensor.naarlegostore') | int %}
          {{ (state_attr('input_datetime.input_datetime.gewenste_aankomsttijd', 'timestamp')) - 
           (minutes * 60) | timestamp_custom('%H:%M', false) }}

But that doesn’t seem to work.
Any wizard advice ?

2 
- platform: template
  sensors:  
    theoretisch_vertrek_min:
      value_template: >
        {{ (state_attr('input_datetime.gewenste_aankomsttijd', 'timestamp') - (states('sensor.naarlegostore') | int * 60)) | timestamp_custom('%H:%M', false) }}

EDIT

Correction: Removed duplicated input_datetime

3 Likes
3 
- platform: template
  sensors:  
    theoretisch_vertrek_min:
      value_template: >
        {{ (state_attr('input_datetime.gewenste_aankomsttijd', 'timestamp') - (states('sensor.naarlegostore') | int * 60)) | timestamp_custom('%H:%M', false) }}

There is an extra input_datetime written by the OP.

1 Like
4

Yes and an incorrect variable declaration on the first line.

5

Thx for yur help :slight_smile: Much appreciated!

6

You’re welcome!

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