12v Push button auto fading LED

Discussion in 'The Projects Forum' started by Pizzaguy321, Jun 7, 2013.

  1. Pizzaguy321

    Thread Starter New Member

    Jun 7, 2013
    2
    0
    Hello all

    I am doing an LED project where I need the LEDs to turn on immediately when a button is pushed but as soon as the button is released it starts to slowly fade out. The fade out time needs to be adjustable because it is for a theater performance and may needs adjusting once used on stage. I am hoping to use about 25 1 watt LEDs. Any help is greatly appreciated because I don't know where to start, I read I could use a 555 mixed with capacitors and resistors but not sure if that's what I should do.

    Thanks!

    -Michael
     
  2. GopherT

    AAC Fanatic!

    Nov 23, 2012
    5,991
    3,736
    Do you want one switch to control one LED or one switch controls all 25 LEDs?

    How long is "slowly", 1, 3, 10, 30 seconds (minutes?)?
     
  3. Pizzaguy321

    Thread Starter New Member

    Jun 7, 2013
    2
    0
    I want the button to control all 25 LEDS, if i could have the fade be between 3 to 5 minutes that would be great!

    Thanks!
     
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