Electrical people, Noob needs help with LEDS

Discussion in 'Community Discussion' started by SamIchi, Feb 5, 2012.

  1. SamIchi macrumors 68030


    Aug 1, 2004
    Hey guys, I wanted to put together some LEDS that would fade in and out like the standby light on the front of the MacBook. I also want to control the time of delay it fades in and out.

    How small can I make these? I want a lot of individual units, powered by small batteries if that's possible. I've searched online, and it seems like I need a lot of components to just have it fade.

    Something like this, but with a longer delay in bettween.
    He has a lot of stuff there, I don't know what I'm looking at. Let me know if this is a simple process, and if I can get this small, like holding a few in my hand small. Any help and suggestions would be great. I'm a pretty crafty person, but I've never worked with electrical stuff.

    Thanks guys.
  2. lewis82 macrumors 68000


    Aug 26, 2009
    Totalitarian Republic of Northlandia
    Alternatively you could use capacitor that will charge and discharge. Problem: for it to have a sufficiently slow charge and discharge time, you would need a huge capacitor. The 555 timer is probably your simplest option.

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