Custom Integration: Simple Timer (+Card)

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Hi everyone!

I’m excited to share my first Home Assistant integration with the community - Simple Timer!

What it does

A simple Home Assistant integration that turns entities on and off with a precise countdown timer and daily runtime tracking. Currently supported entity types: switch, fan, light and input Booleans.

Key Features

  • Out-of-the-box pre-packaged timer solution, eliminating manual creation of multiple Home Assistant entities, sensors, helpers and automations.
  • Countdown timers from 1-1000 minutes
  • Daily usage tracking in HH:MM format
  • Built-in timer card with customizable buttons
  • Optional notifications for timer events
  • Auto-cancel when device is turned off externally
  • Midnight reset for daily statistics

Installation

Available in HACS! The timer card installs automatically - no manual setup needed.

Open your Home Assistant instance and open a repository inside the Home Assistant Community Store.

simple_timer_card
simple_timer_card500×430 14.9 KB

simple_timer_card_editor
simple_timer_card_editor1010×643 33.7 KB

I’d love to hear your feedback and suggestions! This is my first integration, so any input from the community would be greatly appreciated.

Thanks for checking it out!

4 Likes
2

Great work. I like the integration & card.
Would be nice to have options to customize the look of the card (elements position and size, compact version, combine multiple timers in the same card, etc.) Uses a lot of screen estate if you have multiple timers.

1 Like
3

Thanks for the feedback! I’m really glad you’re finding the integration useful.
Card size is definitely an issue that I will address in future version as I got similar feedback from other users.

1 Like
4

This is really great and makes having timers really convenient. The card is really nice but options to remove the daily usage and make it more compact/modern would be nice.

1 Like
5

My entity is a Climate type (HVAC Pool heater), it seems this isn’t selectable. I assume theres more to it?

6

Unfortunately, climate entities aren’t supported yet, but hopefully they will be soon. Someone told me that they use an input helper and an automation to control the device. While it’s not ideal, it is a useful workaround for now.

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OK great. Thanks for advice.

8

New Release with Enhancements and New Features

simple_timer_minimalist
simple_timer_minimalist512×162 7.08 KB

simple_timer_daily+timers+title
simple_timer_daily+timers+title491×276 11.7 KB

UI/UX Enhancements:

  • Complete visual overhaul with new card styling
  • Configurable power button icons
  • Optional daily usage display toggle
  • Enhanced power button highlighting and animations (blue for normal and orange for delayed timers)

New Features:

  • Reverse mode (delayed start) functionality
  • Slider-based timer with configurable max value (1-1000 minutes)
  • Configurable daily reset time (no longer fixed to midnight) - integration level
  • Manual usage reset via long-press gesture on the daily usage text

Bug Fixes:

  • Eliminated startup timeout warnings with dynamic readiness checks
  • Fixed timer race conditions during HA restart
  • Improved timer restoration handling for both normal and reverse modes
1 Like
9

Super useful integration!!!

1 Like
10

A really good timer card. The delayed start is great. A delayed start of a timer would also be brilliant. Example. 10 second delayed to start an irrigation timer (with existing configurable timer duration). Scenario: this would protect an irrigation solenoid if someone quickly presses the timer button on and off a few times. The delay would protect surging.

1 Like
11

just here to put another vote on this one - having the timer work on climate devices would be very helpful :pray:

12

Climate is a bit trickier than a standard on/off entity.

Climate entities use modes like heat, cool, auto, etc. rather than a simple on/off, so we’d need to either let the user choose which mode “on” should map to by default or track and restore the climate entity’s most recent mode.

In the end, it’s all doable, but it takes more time and can add code complexity that I’m trying to avoid.

I suggest to use this workaround at the moment:
https://github.com/ArikShemesh/ha-simple-timer?tab=readme-ov-file#can-i-control-my-ac-or-climate-entity