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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

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Renewable Energy: DIY LED Exterior lights...

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    I have a few places I was going to use exterior LED lighting:

    Over a front door
    On a small balcony
    On a deck / some steps

    You know the sort of thing, normally you'd have a couple of 100watt CFL jobs and 10 or so 30watt halogens that
    kind of business...

    Now I know you can get off the shelf stuff, but I presume without 10 hours of blazing summer sun it will be an embarrassing disappointment.... therefore wondered about knocking up something a bit more hardcore...

    Say v.efficient low power LED light(s)
    Decent PV panel (s)
    Maybe a small wind generator
    12v leisure battery
    DC/DC constant current driver(s)
    PIR / occupancy / day night control (to keep demand low)

    Any thoughts...?

    J
    • CommentAuthorEd Davies
    • CommentTimeOct 6th 2012
     
    Don't forget to factor in the power consumption of the PIR sensors. They're often (always?) not micropower devices, I've heard.

    Are you on grid? If so, is there any special reason for not connecting these lights, etc, to the grid? Grid electricity isn't much more expensive than the electricity out of a battery by the time you take into account the need to replace the battery after it's done its cycles.
  3.  
  4.  
    Nice one Will.

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