I want to know if there is a simple (and cheap) way to make a momentary button (for which we cannot control the time it holds when pressed!) press to virtually hold for about 1-2 seconds.
More precisely, I want to implement a low power consuming solution for a monostable-"mode" 555 timer. Thus when the button is "hit", the 555 Vcc pin will go HIGH for at least the amount of time required for one pulse to be sent out. After that the circuit will go back to stable 0V, until next hit.
Even more precisely – The pulse is used to move a small servo to a certain, constant, predetermined position.
Best Answer
It's called a non-retriggerable monostable. Here's one that isn't a 555 just to show that there is life beyond that ubiquitous animal: -
The 555 timer is fairly adept at most things in the timer bracket so maybe try searching for "555 non-retriggerable monostable". Here's a circuit but I'm no expert on 555s