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LEDs and GIMP

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  • Member since
    January 2011
  • From: NS(ex PRR) Mon Line.
  • 1,395 posts
Posted by Jimmy_Braum on Tuesday, October 24, 2017 5:01 PM

I wired up the four Leds with a resistor on each. 

(My Model Railroad, My Rules) 

These are the opinions of an under 35 , from the east end of, and modeling, the same section of the Wheeling and Lake Erie railway.  As well as a freelanced road (Austinville and Dynamite City railroad).  

  • Member since
    September 2013
  • 2,505 posts
Posted by caldreamer on Tuesday, October 24, 2017 9:15 AM

I have found that if you ask a specific question about gimp it comes up rather than trying to find it in their documentation.  My problem is that I forget where the front end extraction tool is and how to use it.  I do not use it that often.  So I as goolge and it pops right up.

  • Member since
    January 2011
  • From: NS(ex PRR) Mon Line.
  • 1,395 posts
Posted by Jimmy_Braum on Tuesday, October 24, 2017 2:59 AM

all four have resistors. I did my homework this time 

(My Model Railroad, My Rules) 

These are the opinions of an under 35 , from the east end of, and modeling, the same section of the Wheeling and Lake Erie railway.  As well as a freelanced road (Austinville and Dynamite City railroad).  

  • Member since
    October 2017
  • 2 posts
Posted by Hypertex on Monday, October 23, 2017 8:09 PM

dstarr

Gimp is an incredibly powerful graphics program, it's public domain, free.  The documentation sucks.  If you spend the time to fish up more documentation and ask questions and learn GIMP you can do pretty much anything in the way of image manipulation.

I love GIMP, too.  But it's not public domain. It is open source and free, but that's not the same as public domain. There are lots of video tutorials on Youtube on how to use it.

 

 

  • Member since
    August 2006
  • From: Franconia, NH
  • 3,130 posts
Posted by dstarr on Monday, October 23, 2017 7:50 PM

Gimp is an incredibly powerful graphics program, it's public domain, free.  The documentation sucks.  If you spend the time to fish up more documentation and ask questions and learn GIMP you can do pretty much anything in the way of image manipulation. 

   I always give each LED it's own current limiting resistor.  If you just parallel LED's off a single resistor, it works if and only if all the LEDs have the same forward bias voltage.  If you parallel a LED with a low forward bias voltage with on that has a high forward bias voltage, the low voltage LED will hog all the current and glow very brightly and the high voltage one will be dim.  Resistors are cheap.

  • Member since
    August 2003
  • From: Collinwood, Ohio, USA
  • 16,367 posts
Posted by gmpullman on Monday, October 23, 2017 7:37 PM

Very Moody!

I like itYes

Regards, Ed

  • Member since
    January 2011
  • From: NS(ex PRR) Mon Line.
  • 1,395 posts
LEDs and GIMP
Posted by Jimmy_Braum on Monday, October 23, 2017 7:03 PM

This is the result of my first attempt of wiring LEDs in parallel this afternoon.  Then I took the original photograph, and desaturated it.  Pretty cool huh?

(My Model Railroad, My Rules) 

These are the opinions of an under 35 , from the east end of, and modeling, the same section of the Wheeling and Lake Erie railway.  As well as a freelanced road (Austinville and Dynamite City railroad).  

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