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LED project

Discussion in 'LEDs and Optoelectronics' started by GlobalTakeover, Aug 1, 2013.

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  1. GlobalTakeover


    Aug 1, 2013
    Hi all,

    I want to hook up some LED's in my daughters doll house. The house has 3 floors and I want to put 3 LED's on each floor. Each floor controlled by a toggle switch and wired in series.

    My questions:

    1. I want to use 5mm white LED (flat top). How do I calculate how much power I need?
    2. How long will the power supply last before dying?
    Note: I want the LED's to be powered by batteries rather than AC to DC converter.

    Any help would be appreciated, once I figure out everything I need, the next step will be to order parts online, since the closest electronics store is 3 hours away.
    Can anyone recommend a link for buying electronic parts.

    Thank you for taking the time to read my post.
    Craig Hughes
  2. davenn

    davenn Moderator

    Sep 5, 2009
    hi ya Craig

    welcome to the forums
    we have a whole section of the forum for people with questions about driving LEDs have a look here
    any other questions then ask away :)

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