Folks, I am new (second fastspi) project, so bear with me here…
I am trying to conceive a matrix display in a sort of complex shape. The shape is more or less like an arrow tip, actually see the attached pic of the object (guitar) .
How can I best layout led strips to make them easily addressable to light up and pattern the guitar and how to subsequently address them using fastled?
You can lay them out however you like, as long as you connect the data line correctly it will work. For example, I make LED systems for model aircraft. Some people want them to mirror L+R, some want to have the LEDs as a continuous string - it’s all down to how you wire it. I have wired a string of leds as cabin lights, landing lights, nav lights and a couple of strips in the wings as special effects - all one logically-continuous string of LEDs, separated and joined by cables. I even mix LED strips with individual LED '‘bulbs’ - it’s all good.
It would help if you drew an actual layout of what you want to achieve, how many LEDs, etc. Then you can decide how to wire them, how to address them and the programming will flow from there.
I am unsure what you meant by ‘matrix’ - do you want a solid triangular block of LEDs? (BTW, your picture doesn’t show what you described - I guess the bit you were discussing was cut off?).
The technique you probably want to use is to lay the LEDs out however they best fit on your shape, wire them together however it’s convenient, and then use some clever software that points a webcam at the piece and lights each pixel up in turn to construct the mapping from x, y to the linear pixel address. @Daniel_Garcia posted some example code a while back.
Wow… If that could be done… See if i find the code and get it to work (in my newbieness)
