Project: LED indicators for solderless breadboard

Discussion in 'The Completed Projects Collection' started by Markd77, Feb 12, 2013.

  1. Markd77

    Thread Starter Senior Member

    Sep 7, 2009
    2,803
    594
    This is a small board for plugging into solderless breadboards to give a visual indication of voltages for project debugging.
    There are 5 pins, one common and the others connected to the 4 pairs of LEDs. The pairs of LEDS are wired in reverse parallel so that it can be used as common anode or common cathode.
    All the components are 0603 size SMD components and the board can be made and soldered using your favourite method. I used UV exposure and used solder paste and a hot plate for the SMDs.

    [​IMG]
    In action:
    [​IMG]
    Most of the parts are not properly aligned, but works fine.
    [​IMG]
    Schematic:
    [​IMG]

    PCB layout:
    [​IMG]
     
    darrough, absf and thatoneguy like this.
  2. Markd77

    Thread Starter Senior Member

    Sep 7, 2009
    2,803
    594
    This is just a placeholder in case I need more attachments.
     
  3. takao21203

    Distinguished Member

    Apr 28, 2012
    3,577
    463
    you could solder them on top of a shifting register.
     
    forefore likes this.
  4. ErnieM

    AAC Fanatic!

    Apr 24, 2011
    7,388
    1,605
    That's pretty cool. Nice job.

    The solder looks on the lumpy side. If it has flux in the paste then the temperature was either too low or not held long enough. When solder wets out the surface tension from the liquid metal is quite high and will tend to drag the parts and center then on the pads.
     
  5. Georacer

    Moderator

    Nov 25, 2009
    5,142
    1,266
    I think it serves its purpose. I 'll move it soon.
     
  6. Markd77

    Thread Starter Senior Member

    Sep 7, 2009
    2,803
    594
    I think you are right, I'm still new to making boards this way. There's about twice as much solder as there should be as well, which probably doesn't help.
     
  7. takao21203

    Distinguished Member

    Apr 28, 2012
    3,577
    463
    Use 1206 resistors or 1/8W through hole.

    0805 LED should be reflowed it's nearly impossible to solder them manually.

    Or SIP resistors array- small footprint, looks cool. Futurlec has them.

    Suggestions, just...
     
  8. Georacer

    Moderator

    Nov 25, 2009
    5,142
    1,266
    Also added the project to the directory list under LED.
     
  9. tracecom

    AAC Fanatic!

    Apr 16, 2010
    3,869
    1,393
    Here's a through-hole variant.
     
    absf and Wendy like this.
  10. Jennifernew

    New Member

    Feb 23, 2013
    1
    0
    Great idea!! for solder less bread board this is a great idea for using LED indicator. Thanks for sharing the information.
     
  11. Dr.killjoy

    Well-Known Member

    Apr 28, 2013
    1,190
    156
    There is a couple designs out there for this idea... I will post as soon as I find them..
     
Loading...