Controlling LED Sequence..?

Discussion in 'General Electronics Chat' started by Jedo_03, Oct 29, 2013.

  1. Jedo_03

    Thread Starter New Member

    May 22, 2012
    We bought one of these...
    which a 10m long string of green LED lights which plugs into 240v
    There is a controller thingy (that white plastic box thing) with a button which pressed changes the flashing sequence of the lights - 8 settings in all...
    But here's the rub: we don't want them to flash..!!
    We just want them to light up and stay on - and give us a mellow green glow in our tropical shadehouse...
    We thought it might be possible to set the controller on "steady" #8, but every time we turn them on at the outlet, they go into random sequence...
    What can we do so that when we turn them on at the outlet, they go on and stay on - no flashing... Can we remove/bypass the controller?
    Thanks if you can help
  2. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
    Just go buy a set without a controller..
    "xmas" lights like that are a few dollars (over here in the states anyways)
  3. Jedo_03

    Thread Starter New Member

    May 22, 2012
    Hello mcgyvr...
    Thanks for your reply - but that's more easily said than done..!!!
    Seems that most "fairy lights" sold nowadays come with that flashing-gizmo controller box (8 function) - and the default on start-up is the Random function... We are wanting a steady green glow...
    Add to that: there is only 25cms of wire between where the first LED starts and the control box...
    The "plan" for the lights was up-high around the inside of our little garden conservatory... means we can't reach the controller to select the "steady green glow" function unless we climb up a ladder ...
    Is it possible to "bypass" the function controller box - just cut the wires and remove this box and reconnect the wires to the plug...
    Like... are there any significant resistors inside that box that are essential to drive the LEDs and control the voltage and current..???
    There has to be a way...
  4. Metalmann

    Active Member

    Dec 8, 2012
    Every set of those I've seen, is wired through the controller box.

    Interesting to see, if someone can bypass that......:confused:
  5. Jedo_03

    Thread Starter New Member

    May 22, 2012
    True Metalmann...
    Difficult to locate (specifically) a 20m long 240v LED strip that DOESN'T have that function controller..!!
    I've seen "solar panel" units with up to 600 LEDs (!!!) that are powered by a single 1200 mAh 1.5v battery... No fancy flash-function-controller on these puppies... But pretty dismal lumens...
    Should be theoretically - and practically, possible to realise a 240v source, 20m long 200/300 LED strip that doesn't flash...
  6. KJ6EAD

    Senior Member

    Apr 30, 2011
    Usually, those little controllers are a COB (chip on board) with an output transistor and a few support components. Sometimes you can replace the output transistor with a diode to get continuous on function without losing any rectification and/or current limiting provided by the support components.
    Last edited: Oct 31, 2013
  7. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
  8. #12


    Nov 30, 2010
    Isn't it wonderful that everything available nowadays has a micro-controller built into it?

    I'd tell you to locate the current limit function and just re-wire it, but it is against the rules of this website to tell people to mess with voltage straight out of a wall socket. The best I can do with this to to tell you to add some wire between the lights and the controller so you can move the controller to where it is available for you to push the buttons.

    Try electrotech-online for 240 VAC advice.