Saturday, 15 November 2014

timer - 0-10 second on-time with a potentiometer


I would like to make a simple circuit, where the a potentiometer controls a 0 - 10 second on-time.


If the potentiometer is set to min, the on time should be 0 seconds. If the potentiometer is maxed out the circuit should be on 10 seconds.


I was thinking of using an Arduino, but that would be overkill for such an application. And too expensive as well. Maybe a 555 timer would be an option?


All help is appreciated!



Notes:



  • Circuit must be 5V or 12V DC

  • The object to turn on is a 12V car lightbulb. (some advice about a relay?)

  • Has to be cheaper than using an Arduino




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