1. New to Christmas lighting? Get started with the AusChristmasLighting 101 Manual:

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

    Oct 14, 2018
    Likes Received:
    Lake Macquarie
    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 :)

    Attached Files:

  2. scamper

    scamper Senior Elf

    Jan 5, 2014
    Likes Received:
    Find Me On:
    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.
    The Bald Boy likes this.
  3. Nuzzy

    Nuzzy New Elf

    Aug 6, 2017
    Likes Received:
    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.
    The Bald Boy likes this.
  4. AAH

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

    Dec 27, 2010
    Likes Received:
    Find Me On:
    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.

Share This Page