Circular timer card

Circular timer card is a dashboard card that shows timer countdowns as a circular arc plot. It draws the arc with D3.js and works with timer entities in Home Assistant. Interaction is built into the card: a tap toggles the timer, a hold of about one second opens the more-info dialog, and a double tap cancels and resets the timer. A minimal layout is available as an alternative to the full circle, and options that take colors also accept hexadecimal values with opacity. It can be installed through the Marketplace or by adding the downloaded JavaScript file as a Lovelace resource.