# Configurable time trigger

**URL:** <https://community.homey.app/t/configurable-time-trigger/63532>\
**Category:** Ideas & Suggestions\
**Created:** [May 11, 2022, 7:04pm UTC](https://community.homey.app/t/configurable-time-trigger/63532 "2022-05-11T19:04:45Z")\
**Posts on this page:** 1\
**Showing post:** 4

<div class="post-metadata">

**Author:** ![zakraket](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/zakraket/32/17470_2.png) [@zakraket](https://community.homey.app/u/zakraket)\
**Post date:** [May 12, 2022, 7:01am UTC](https://community.homey.app/t/configurable-time-trigger/63532/4 "2022-05-12T07:01:46Z")

</div>

Alarms are not what I’m looking for.

My usecase:

- set a time to leave (i.e. the time I need to get in my car)
- have Homey calculate back the time to start charging, based on the “chargingtime left” (number of minutes) value that the car reports
- start charging on “time-to-leave” -/- “chargingtime left” = “start charging time”

I don’t see any way to easily set a specifica time (other than the alarms), and I don’t see any way to calculate “time (hh:mm)” minus “x minutes” = “wanted time”

Anyone point me in the right direction?

---

_[View the full topic](https://community.homey.app/t/configurable-time-trigger/63532)._