Need Help with a counter based off a Button connected to a relay

[John93]

Timer after press button

Hi to all i have test blykn in this day and is very fantastic…i have a simple question If i press a button in ON status, i need to start relay for 10 sec and stop for 20 sec…start for 10 sec and stop for 20 sec (in loop) if i switch in off…i stop loop someone I can 'help by showing me the correct syntax about code? Thanks very much

Hope this can help you.