Pulsing an led strip

Using Arduino LEDs and Multiplexing
1

Hey friends,
I'm working on an art project that has some led components and am new to coding arduino. I'm trying to get an addressable led strip to pulse a solid color. Not quite like blinking on and off, but more of a fading on and off in sort of a sine wave like movement. I am using an arduino uno and the adafruit lpd8806 library. I figured this would be something that a lot of people may have done before but i can't seem to find any code example anywhere. If any of you have done this before and could share some code with me or point me in a direction that might get me started that'd be amazing! :slight_smile:

My ultimate intention is to have 7 separate strips wired to eachother, each strip displaying one the 7 colors of the rainbow, and to have each strip, moving up the color spectrum, pulsing to a slightly faster frequency.

Any insight at all would be greatly appreciated! Thanks :smiley:

2

How much have you got working?

Have a look at the Example -> Analog -> Fading. Replace the analogWrite with setPixelColor(). Yes this is a triangular fade-in/out. To make it look "sine wave like" you need to experiment as LED fades never seem "liniear" (twice the number is not twice the brihgtness) - but first get this working.