Hi good day, this is my 1st time posting here. I wanted a simple timer which can trigger my flash unit just once, about 5-10 secs after the button is pressed. Does anyone have a schematic? 555 perhaps? The simpler, the better. Thank you very much for the input guys!

 

Google 555 monostable.

 

Or try Wikipedia for info on the 555.

 

Or try this in the local AAC book.

Chapter 8: 555 TIMER CIRCUITS