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Mains electricity question...

Discussion in 'General Electronics Discussion' started by bfreeman, Sep 12, 2018.

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  1. bfreeman

    bfreeman

    1
    0
    Sep 12, 2018
    Hi
    First time poster. Doing a DIY project building open cupboards with lights inside. I am trying to have the lights EITHER switched from a single wall switch whereby they will all come on OR an individual light only coming on from a mini PIR sensor. See the diagram attached. At the moment, if I was to wire it up, all of the lights would come on from either the switch or any of the PIR sensors. If it was DC I would put a diode between each LED driver and the switch but this is running on 220V AC. Is there any way to get it working how I want? I could put a separate LED driver in each branch but that is quite an expensive way of doing things.
    Thanks
    Ben
    20180911_174254_resized.jpg
     
  2. Hopup

    Hopup

    253
    36
    Jul 5, 2015
    You could probably do it with microcontroller and some relays with ease.
     
  3. kellys_eye

    kellys_eye

    4,275
    1,147
    Jun 25, 2010
    I recall seeing some PIR lights that have the ability to come fully 'on' by flicking the mains switch on/off (twice) otherwise they work as ordinary PIR controlled lights.

    Maybe have a look for the operating instructions of the PIRs you have in mind - they may already have this facility.
     
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