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Big W lights - want to use a PSU and join a lot of together

Discussion in 'Lights - Store Bought and Home Made' started by The Bald Boy, Nov 10, 2018 at 6:16 AM.

  1. The Bald Boy

    The Bald Boy New Elf

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    HI all,
    I have a lot of dumb Big W lights with a MFC. I would like to get rid of the power pack that comes with it and use a PSU. This will save me a lot or power boards and extension cords!!
    I am not sure of the following:
    1. What type of controller I need, if needed at all?
    2. Can I just plug the wires from the LED into the PSU?
    3. Can I use the MFC that comes with it to ensure the light changing pattern? Or Do I need something else?
    4. What size PSU would I need? I am thinking 30V and winding it down. I have read on this site that although the power pack that comes with the lights might say 24V - they actually run at a higher voltage
    The power pack/plug that comes with the dumb lights have the following information: photos also supplied
    AC-DC adaptor
    model KMD-240-01000-48SA
    input 230-240V-50-60Hz
    output 24V=10VA

    AC-AC Adaptor
    model KMA-220-01000-41SA
    nput 230-240V-50-60Hz
    output 22V=10VA

    AC-AC Adaptor
    model KMA-220-00800-41SA
    nput 230-240V-50-60Hz
    output 22V=8VA

    Power supply
    model: MKV-C-300-130-AU
    PRI: 220-240V-50/60Hz 0.16A
    SEC: 30V - 0.43A 13W

    Aah has said the MFC is:
    It's a 3 wire 2 channel controller assuming that it's both power and lights that are coming in the bottom.

    I currently have a Falcon F16v3 and a Raspberry pi 3B+. I will run a 12V PSU to the Falcon for some led strips I have purchased.

    Sorry about the long message - just trying to give as much information as possible. I am really new to all of this :)
     

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  2. scamper

    scamper Senior Elf

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    There are many posts on the forum that describe how to do this so it is worth while doing a search and seeing what other people have done.
    That being said, Big W have changed their light strings a few times over the years and you may well have a few different ones there.
    I modified a bunch of mine and use them on some mini trees that I have. I use a 27v power supply and run them off a 24 channel controller. Each set of lights is 2 channels. so the are orange and green or blue and red. This controller is fed DMX from the output port from your f16v3 (ports 1 to 3 that look like an ethernet port) then you set them up in the settings to say they are dmx out instead of strings. But this will only work on the 3 string models as the 2 string models work on simply switching the polarity back and forth to get the different colours.
    [​IMG]
     
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  3. Nuzzy

    Nuzzy New Elf

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    I used one of @AAH 2811dc30 controllers with a 27 volt power supply to control mine. Then made a sequence in Xlights that mimicked the flashing pattern I liked from the MFC so it was like nothing had changed. With the controller, like @scamper does, they then become controllable through Xlights so you can include them in your show if you wish.
     
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  4. AAH

    AAH I love blinky lights :) Community Project Designer Generous Elf

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    Using 1 power supply isn't quite as easy as hooking it up to the existing controllers or hooking multiple lights to existing controllers.
    There's a range of voltages in your controllers for your lights with a mix of AC and DC. The AC have a ~ looking symbol and DC have a symbol like = but the bottom line is dashed. The AC type controllers will typically have 3, 4 or 5 wires out to the leds and 2 coming from the plugpack. These are the easy ones that can be controlled with normal DMX controllers. DC type controllers in my experience will generally be the dreaded 2 wire 2 channel ones. They'll only have 2 wires going out to the leds.
    Connecting multiple strings to 1 multifunction controller is an issue because the controllers will generally only have a very low current rating. The AC type will commonly have a 24VAC 1A rating on them as they use a generic design and low cost parts.
    3/4/5 wire lights can be controlled with a conventional DC dimmer like most DMX boards or via my pixel to DC boards 2811DC15/2811DC30. The 2 wire 2 channel ones require a special system to control them as they are designed so that the polarity of the wiring needs to be reversed to control each half of the lights.
    Using a slightly different voltage for a number of different lights isn't always a huge hassle. Using too low a voltage will mean that sometimes led strings won't light up as the voltage isn't enough to turn on the 6,7,8 leds that are wired in series. With too high a voltage the current the leds get will be higher and they will be brighter but as long as the leds are flashed rather than being on 100% this generally won't cause a problem.
     

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