I'm fairly new to arduino and coding so my code might be a bit simple, but for right now this seems to work. I've been working on the same problem for a couple days. Here's the output selecting GREEN directly afterwards: Rstart 255, Gstart 0, Bstart 0Īnd then the output selecting BLUE after that: Rstart 0, Gstart 255, Bstart 0 Here's the output selecting RED to begin with: Rstart 0, Gstart 0, Bstart 0 I can provide more information if necessary. The problem is the colors are not fading between themselves.Īpologies if any of this is confusing. Rstart = red, Gstart = grn, Bstart = blu Each time through the loop, it increases by the value of the variable fadeAmount. In the sketch below, the PWM value is set using a variable called brightness. tPixelColor(0, strip.Color(Rnew, Gnew, Bnew)) In order to fade your LED off and on, gradually increase your PWM value from 0 (all the way off) to 255 (all the way on), and then back to 0 once again to complete the cycle. Larger values of 'n' will give a smoother/slower transition. Sprintf(rgbString, "Rend %i, Gend %i, Bend %i", Rend, Gend, Bend)
Arduino rgb led fade without delay series#
Int blu = command.substring(lastCommaIndex+1).toInt() Step 1: Breadboard LED Circuit The LED is connected in series with a resistor between Arduino pin 9 and ground. Int grn = command.substring(commaIndex+1, secondCommaIndex).toInt() The circuit: LED attached from pin 13 to ground. This means that other code can run at the same time without being interrupted by the LED code.
Int red = command.substring(0, commaIndex).toInt() / Blink without Delay Turns on and off a light emitting diode(LED) connected to a digital pin, without using the delay() function. Int lastCommaIndex = command.lastIndexOf(',') Int secondCommaIndex = command.indexOf(',', commaIndex+1) Sprintf(rgbString, "Rnew %i, Gnew %i, Bnew %i", Rnew, Gnew, Bnew) Sprintf(rgbString, "Rstart %i, Gstart %i, Bstart %i", Rstart, Gstart, Bstart) * Return : 1 on success and a negative number on failure * Description : Sets the strip with the appropriate colour The function takes a parameter called command, which is a string separated by commas:Į.g. I'm not 100% sure on where I'm going wrong or whether there's a much easier way to do what I'm after (I'm open to suggestions). I am logging output of all the variables to give you an indication of what's going on. What I would like to do is be able to select a color and then another color and have the first color fade to the next color and so forth (much like the LIFX bulbs behave when using the iPhone application). I can successfully change the colour of any of the LED's (at the moment I'm only setting the first one 0 for testing purposes) so I know my wiring isn't the problem here, it's my coding. For my Arduino project I have a Neopixel RGB Strip with 72 LED's.
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