Results 1 to 6 of 6

Thread: How Test Supeflux LEDs without LED Tester

  1. #1
    Join Date
    Oct 2011
    Location
    Marietta, GA
    Posts
    117
    Post Thanks / Like

    Default How Test Supeflux LEDs without LED Tester

    I've got my FAST setups coming today and realized, doh!, forgot to order an LED tester...

    I thought I read in a post previously someone was using a modified computer supply for this (but couldn't find it), and was wondering specifically how you would do that (I have modified a computer power supply and can easily hook up +12, -12, +5, or +3.3).

    I was thinking of just applying 3.3V or 5V across + and - but worried I'm missing the obvious and might need a current limiting series resistor or something...
    My multimeter has a diode tester so was thinking I could use that as well...

    Other alternative is just build the boards and see

    Just trying not to reinvent the wheel.

    Thanks in advance!

  2. #2
    Join Date
    Nov 2009
    Location
    Plymouth, MN
    Posts
    412
    Post Thanks / Like

    Default Re: How Test Supeflux LEDs without LED Tester

    Many (most?) multimeters have a diode check setting. That's what I use.

  3. #3
    Join Date
    Oct 2008
    Location
    San Jose, CA
    Posts
    9,149
    Post Thanks / Like

    Default

    You don't want to connect directly to a power supply - it will smoke the LED. Use a watch cell battery and place the leads around the edges of it. It will take a bit of trial and error to find the correct orientation but once you do it goes quick.
    Brian

    Christmas in San Jose! - WEB - FB - VIDEOS
    Halloween in San Jose! - FB
    2014 Halloween Show - Homemade tombstones, Grave Crawler, 2x 3-axis skulls, 4x 1-axis skulls, Video Projection (more)
    2014 Christmas Show - 5x E681-12, 3x Ren48LSD, 32x42 TLS3001 pixel MT/Star, 4x Rainbow Floods, 12x DIYC Floods, SuperPixelStar, PixaBulb House outline

    Ignorance is Temporary - Stupidity is Forever...

  4. #4
    Join Date
    Dec 2009
    Location
    Holland, Manitoba
    Posts
    360
    Post Thanks / Like

    Default Re: How Test Supeflux LEDs without LED Tester

    Quote Originally Posted by tfischer View Post
    Many (most?) multimeters have a diode check setting. That's what I use.
    +1 what he said. Just use your DMM on diode check. Quick and easy.

  5. #5
    Join Date
    Oct 2011
    Location
    Marietta, GA
    Posts
    117
    Post Thanks / Like

    Default Re: How Test Supeflux LEDs without LED Tester

    thanks guys!

  6. #6
    Join Date
    Jan 2008
    Location
    Washington, Georgia
    Posts
    2,983
    Post Thanks / Like

    Default Re: How Test Supeflux LEDs without LED Tester

    Quote Originally Posted by budude View Post
    You don't want to connect directly to a power supply - it will smoke the LED. Use a watch cell battery and place the leads around the edges of it. It will take a bit of trial and error to find the correct orientation but once you do it goes quick.
    +1 On the watch battery. Get a CR2032, cheapest and easiest LED tester ever...
    DIYC Links:
    [URL="http://doityourselfchristmas.com/wiki/index.php"]Christmas Wiki[/URL] | [URL="http://doityourselfchristmas.com/forums/addonchat.php"]Chat[/URL]

    Ricky, Jrd

    "With great power comes great electricity bill." - Unknown Electricity Consumer
    "Your significance in life is not what you do, but how and why you do something." - Unknown Minister
    [COLOR="SeaGreen"]2012
    City float for Parade of Lights with:
    Fm-02 + Wall Wart Tamer
    2 Ren4Flood + DIYCFlood + Ren-W in 500 Watt enclosure
    2 Simple Renard 32
    15 SSROZ
    2 24 Channel RBW LED Ropelight Midi Trees out of artificial Christmas trees.

    <a href="#" onclick="return(showhide(this));">Click here to show/hide my past display details ...</a>
    <script language="javascript">function showhide(anc){ //
    // traverse forward from anchor to find hidable div:
    for(; ; ){ if(!anc.nextSibling) break; if(anc.nextSibling.nodeName == "DIV") break; anc = anc.nextSibling; }//
    var Y='block', N='none', det=anc.nextSibling; //
    //fall-back plan: use named div:
    if (!det) det=document.getElementById('details'); //
    //toggle visibility:
    det.style.display=(det.style.display!=N)?N:Y; //
    //prevent page refresh:
    return false;}</script><div id="details" style="display:none;">2011
    Renard 24 v3.3 100%
    FM-02 with antenna 100%
    16' 8 channel Multi-color + Clear Megatree 100%</div>[/COLOR]

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •