Page 2 of 2 FirstFirst 12
Results 11 to 19 of 19

Thread: Buck converter question

  1. #11
    Join Date
    Jan 2015
    Location
    Kansas City Missouri
    Posts
    2,308
    Post Thanks / Like

    Default Re: Buck converter question

    Quote Originally Posted by wilmar View Post
    These are so small they will fit into schedule 40 3/4Ē pvc pipe



    Sent from my iPhone using Tapatalk
    Will fit neatly inside a pill bottle.

    Sent from my SM-T710 using Tapatalk

  2. #12
    Join Date
    Nov 2018
    Location
    Houston, Texas
    Posts
    510
    Post Thanks / Like

    Default Re: Buck converter question

    Quote Originally Posted by pmiller View Post
    Will fit neatly inside a pill bottle.

    Sent from my SM-T710 using Tapatalk
    Need some help I cannot read these pixels to determine in and out any ideas?


    Sent from my iPhone using Tapatalk

  3. #13
    Join Date
    Nov 2018
    Location
    Houston, Texas
    Posts
    510
    Post Thanks / Like

    Default Re: Buck converter question

    Ok buck converter works great but the 3rd light from end is pink rest are white. Turned intensity down still same pixel is pink . Last 2 pixel are white so not sure.
    Voltage at end of string is 4.7 to 4.9
    .


    Sent from my iPhone using Tapatalk

  4. #14
    Join Date
    Dec 2012
    Location
    Newtown CT
    Posts
    4,065
    Post Thanks / Like

    Default Re: Buck converter question

    Quote Originally Posted by wilmar View Post
    One comment on the converters I purchased was he set at 5 volts but when connected to lights it would drop to 1.8 volts he was told to set it with the load to 5 volts didnít know how this would affect Christmas lights going off and on and such . Just making sure of what Iím doing ,didnít want to burn any of my pixels out or anything else


    Sent from my iPhone using Tapatalk
    Setting when connected and intensity == 0 is safe (when you increase the intensity the voltage will go down). If you set the voltage when intensity == full on then when you reduce the intensity the voltage will go up (this is bad).


    2020 Full sized show reworked for the new location. Only adding (famous last words) 13 RBLs that I finally got converted to using pixels
    2019 - Just moved into a new home (yet another change of plans). Will be dim but not dark. Too much to do at the new place to leave time for a show. Dim show (3000 pixels) had regular visits most nights.
    https://www.youtube.com/channel/UCyX...ttrsZNARkUce0Q

  5. #15
    Join Date
    Dec 2012
    Location
    Newtown CT
    Posts
    4,065
    Post Thanks / Like

    Default Re: Buck converter question

    They are 3A when they have the optional heatsink installed. Also, the expected input voltage on those converters is 24V. If you only put in 12V they may get a bit squishy in the regulator circuit.


    2020 Full sized show reworked for the new location. Only adding (famous last words) 13 RBLs that I finally got converted to using pixels
    2019 - Just moved into a new home (yet another change of plans). Will be dim but not dark. Too much to do at the new place to leave time for a show. Dim show (3000 pixels) had regular visits most nights.
    https://www.youtube.com/channel/UCyX...ttrsZNARkUce0Q

  6. #16
    Join Date
    Dec 2012
    Location
    Newtown CT
    Posts
    4,065
    Post Thanks / Like

    Default Re: Buck converter question

    Try just red then just green and then just blue. I suspect your blue LED is not as bright as the rest.


    2020 Full sized show reworked for the new location. Only adding (famous last words) 13 RBLs that I finally got converted to using pixels
    2019 - Just moved into a new home (yet another change of plans). Will be dim but not dark. Too much to do at the new place to leave time for a show. Dim show (3000 pixels) had regular visits most nights.
    https://www.youtube.com/channel/UCyX...ttrsZNARkUce0Q

  7. #17
    Join Date
    Nov 2018
    Location
    Houston, Texas
    Posts
    510
    Post Thanks / Like

    Default Buck converter question

    I set voltage with no load to 5.5 volts and with a load at end of 50 node string I get 4.7 to 4.9
    I think itís working correctly



    Sent from my iPhone using Tapatalk

  8. #18
    Join Date
    Nov 2018
    Location
    Houston, Texas
    Posts
    510
    Post Thanks / Like

    Default Re: Buck converter question

    Quote Originally Posted by MartinMueller2003 View Post
    Try just red then just green and then just blue. I suspect your blue LED is not as bright as the rest.
    I tried 4 more strings and all lights work as supposed to colors are correct no pink pixels.
    Maybe a bad pixel in that one string?


    Sent from my iPhone using Tapatalk

  9. #19
    Join Date
    Nov 2018
    Location
    Houston, Texas
    Posts
    510
    Post Thanks / Like

    Default Re: Buck converter question


    Other strings are fine


    Sent from my iPhone using Tapatalk

Page 2 of 2 FirstFirst 12

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
  •