I want to activate a relay for a ammount of time if a flame sensor is true

[PeteKnight]

Oh dear!
Cluttered void loop, a pointless timeout timer in void setup, and lots of stuff missing from your sketch.

A little bedtime reading for you…

Keep your void loop() clean

Using BlynkTimer or SimpleTimer

Many users seem to struggle with the basic concepts of using BlynkTimer in their projects, despite the excellent discussions and tutorials that exist on this forum, so I thought I’d write a guide that will hopefully help clarify things. It’s rather long, as it attempts to explain the reasoning behind why and how we use timers, and covers some more advanced subjects, but I’ve tried to organise it in a way that helps people to find answers to specific questions… Why use a timer at all? Let’s say …

Pete.