Hi, I have tried to find a simple answer for this in the forum but would appreciate if someone could give me a pointer. I set out on a project to try and move a 3mm diammeter rod in direct proportion to a voltage applied but I was limited to very small components and couldnt find a stepper motor with linear movement control which was less than 1.5cm long and required low voltage dc supply. The only other option I could find was to get a miniature solenoid and use a simple on off trigger and use a mechanical screw to adjust position after initial on trigger. I am using a mechanical on off switch to apply a trigger to activate a solenoid using the smallest battery available probably a 6v camera battery. The problem is that I need the solenoid to be activated after a period of time rather then immediately when the switch is closed ~(or open if need be). This delay has to be confirmed but will be between 0.1 - 0.8 secs. I was thinking of a switch which triggered a 555 timer output after eg 0.5 secs , the output goes high to activate the solenoid and stays in the high position.
So
1 - switch is closed
2 - A 0.5 second delay occurs before
3 - A battery voltage is applied to a solenoid and stays there until switch is open
4?? does anybody know of a tiny linear low voltage dc stepper motor available as I couldnt find one
Any help please....