Setting a timer, stopping a timer, showing time left

[nightmare]

I’m having issues trying to figure out how to do something like this.

I have a bathroom fan and when it gets turned on, I want a timer to start for 30 minutes and then automatically shut off after that time. If someone shuts off the fan, I want the timer to turn off and zero out. But I also want the amount of time left on the timer to be shown on one of my HA pages. See screenshot of example.

When the fan is off, the timer part of the label would just say “Bathroom Fan”.

Any ideas how to accomplish this? Thank you.

[michaelblight (Michael)]

Have a look at timer-bar-card . It does it differently to what you’re asking for, but may meet your needs.