LED's flashing like a cheap disco...

Discussion in 'Anything DIY Related' started by JS, 29 May 2012.

  1. JS

    JS

    Joined:
    16 Jan 2012
    Posts:
    1,795
    Likes Received:
    73
    Location:
    Port Elizabeth
    Hi

    I recenetly bought a LED kit, 20 LED's (10 royal blue 10 15000K Whites)

    I soldered all the wires etc last night - but my leds are flashing....??

    What did I do wrong?

    My driver are rated 10-18 3w led - and I am running 10 leds....could it be that I have too little led's on them?

    Any advice would be appreciated...

    Thanks
     
  2. AdS Guest




    to hide all adverts.
  3. mariusmeyer

    mariusmeyer

    Joined:
    7 Jul 2009
    Posts:
    3,054
    Likes Received:
    210
    Location:
    Jukskei Park, JHB
    What do you mean by flashing? Physically turning on and off or are they just displaying a random white/blue pattern on the inside of the tank?
     
  4. Jeann1

    Jeann1

    Joined:
    21 Dec 2010
    Posts:
    830
    Likes Received:
    18
    Location:
    Witbank - Mpumalanga
    Hi.

    What drivers are you using? most PWM drivers range only start at 15%, so any power less than 15% and they will flash
     
  5. JAJA

    JAJA

    Joined:
    3 Dec 2009
    Posts:
    484
    Likes Received:
    9
    Location:
    Westlake, Cape Town
    If your driver is dimmable then you will need dimmable LED's. If lamps are not spec'd for dimmable then they will flash.
     
  6. JS

    JS Thread Starter

    Joined:
    16 Jan 2012
    Posts:
    1,795
    Likes Received:
    73
    Location:
    Port Elizabeth
    Hi. The driver's are non-dimmable.....

    Spec on driver:

    Input: AC85-265V 50/60Hz
    Output: DC36-75V 650mA +- 15%
    TC: 75deg C TA 50deg C (MAX)

    Running 3w leds....do you think I have to add more to the chain? Oh, i connected them up in series, is that correct?
     
  7. butcherman

    butcherman Moderator MASA Contributor

    Joined:
    7 Sep 2009
    Posts:
    11,626
    Likes Received:
    280
    Location:
    Kempton Park
    wiring diagram and model of driver please?
    did you test the output voltage of the driver?
     
  8. JS

    JS Thread Starter

    Joined:
    16 Jan 2012
    Posts:
    1,795
    Likes Received:
    73
    Location:
    Port Elizabeth
    HI. Model No. JNY-L3060W-B (its a golden annodized colour - sealed unit.

    As for wiring diagram - 10 LED's connect in series.....so + side to - side.....long chain.....connect to to driver.

    The input side only has Neutral and life....so that is connected to a normal wall plug.....

    The driver states for 10 - 18 3w leds.....I run 10.

    Somthing i noticed now....the driver states 680mA and the LED's are 700mA.....can this be the problem?
     
  9. RiaanP

    RiaanP Moderator

    Joined:
    11 Aug 2008
    Posts:
    23,161
    Likes Received:
    1,230
    Location:
    Centurion
    pump up the volume... boom boom.
    :)
    your own disco lights.
     
  10. Wes

    Wes

    Joined:
    24 Jan 2012
    Posts:
    1,428
    Likes Received:
    12
    Location:
    Randburg
    Sounds like a lose connection or + maybe touching - somewhere, have a good look at your soldering maybe?
     
  11. JS

    JS Thread Starter

    Joined:
    16 Jan 2012
    Posts:
    1,795
    Likes Received:
    73
    Location:
    Port Elizabeth

    LOL.


    I will check the soldering tonight again.
     
  12. butcherman

    butcherman Moderator MASA Contributor

    Joined:
    7 Sep 2009
    Posts:
    11,626
    Likes Received:
    280
    Location:
    Kempton Park
    no its fine, when running the led's and they are flashing measure the voltage on the + and - outputs from the driver. what do you get and is it constant?
     
  13. JS

    JS Thread Starter

    Joined:
    16 Jan 2012
    Posts:
    1,795
    Likes Received:
    73
    Location:
    Port Elizabeth

    Hi, i will check when I get home....thank you.
     
  14. JS

    JS Thread Starter

    Joined:
    16 Jan 2012
    Posts:
    1,795
    Likes Received:
    73
    Location:
    Port Elizabeth
    Update: found the problem, seems I had to add more led's per driver.....increased to 15.....and they stopped flashing! :) The was also the recomendation from supplier....

    This is great as now I can add other 10 Led's to my tank! :thumbup:
     
  15. butcherman

    butcherman Moderator MASA Contributor

    Joined:
    7 Sep 2009
    Posts:
    11,626
    Likes Received:
    280
    Location:
    Kempton Park
    good news how about a picture:whistling:
     
  16. JS

    JS Thread Starter

    Joined:
    16 Jan 2012
    Posts:
    1,795
    Likes Received:
    73
    Location:
    Port Elizabeth
    HI

    Only have these on my phone now....will post more once project is complete! Thanks for the help...

    [​IMG]
    [​IMG][​IMG]
     
  17. butcherman

    butcherman Moderator MASA Contributor

    Joined:
    7 Sep 2009
    Posts:
    11,626
    Likes Received:
    280
    Location:
    Kempton Park
    nice job :thumbup:
     
  18. seank

    seank

    Joined:
    24 May 2007
    Posts:
    11,984
    Likes Received:
    119
    Location:
    North of Durban and South of Mozambique
    All the diy LED gurus, how much does a unit like this more or less cost??

    I need to cover 2.5m x 1.2m (depth of 1.3m)
     
  19. JS

    JS Thread Starter

    Joined:
    16 Jan 2012
    Posts:
    1,795
    Likes Received:
    73
    Location:
    Port Elizabeth
    This one with 30 LED will ahve cost me R527 once complete.... :thumbup: (but, this was as I have a friend with a machine shop and was able to make me the custom heatsink....) It you order heatsinks they are expensive due to weight.....
     
  20. butcherman

    butcherman Moderator MASA Contributor

    Joined:
    7 Sep 2009
    Posts:
    11,626
    Likes Received:
    280
    Location:
    Kempton Park
    I agree!
     
  21. seank

    seank

    Joined:
    24 May 2007
    Posts:
    11,984
    Likes Received:
    119
    Location:
    North of Durban and South of Mozambique
    ?????
     
Recent Posts

Loading...
Similar Threads - LED's flashing cheap Forum Date
[wtd] Pharos Led's Wanted 16 Nov 2016
[wtd] Led's for 60cm cube Wanted 10 Sep 2016
[wtd] "KEY" led's Wanted 4 Sep 2016
New Aquaillumination Hydra LED's JUST LANDED! Aquarium World 4 Dec 2015
When Buying LED's off EBAy please bewear Lighting 16 Nov 2015
Determining height of led's Lighting 26 Jun 2015
DIY led's Test Kits, Controllers, Reactors and Dosers 24 May 2015