Timer WIDGETS

[Blynk_Coeur]

[SOLVED] How to countdown?

Been trying a variety of different approaches to do a countdown, but am struggling a bit… Whats the best way to do a countdown? Any suggestion or help would be greatly appreciated. Scenario: User press’ a start button. The countdown should be for 1 hour. Display a percentage or time left (59 minutes ramining, etc.) At the end of the hour, turn on an LED