A momentary brain fart made me realize I need to generate some stuff on-the-fly (in case a card isn’t present.) These are all patterns generated through calculations, making ample use of the rainbow …
Those are really nice looking patterns Ashley. I especially like the color schemes you have used!
Looking great! I really like the “color wheel”, for (almost) completely technical reasons, and a bunch of the other patters for more aesthetic reasons.
As you probably have surmised, Dan and I do almost all of our projects ‘algorithmically’ on the microcontroller itself, vs loading images from SD, or receiving data over serial from another computer. I think the fact that we tend to do things that way is one of the main factors that makes us ever-more-hungry to have more CPU cycles available for our animations, which it turn keeps us focused on the performance of FastLED as a library. The more the library can do for you, and the faster it can do it, the more CPU power you have for your own animations.
The problem is one of memory space. With just the 8 that I created, it’s already eating up 10k. Now, that doesn’t necessarily mean what I wrote is as optimized and what not that it can be, however it is on par with what I’ve seen others be able to cram inside their AVRs. I’m actually thinking of moving some data to EEPROM instead and save more space, but that’s still a ways out on the horizon.
Approx, how fast of a rotation speed would you need, with a pov stick like this, to be visually perfect to a viewer?
Great work by the way!
I’m actually not a spinner, so I couldn’t tell you whether I’m doing it at the right speed or not. However, as with any POV system that does not have a speed feedback, the slower it’s spinning, the more compressed the image, and the faster, the more stretched the image.
However, I will say this: these are heavier than just about any sticks I’ve picked up in the past two years, nor to mention also longer. So while you can most certainly spin these at a rather high rate (and they make a lovely whooshing sound), should you happen to catch your head anywhere, as Chris Farley used to say, “That’s going to leave a mark.” I am trying to figure out how I can lighten them up a bit. They do pack quite a wallop.
Last night I was actually pretty tired and was spinning fairly slow. The camera’s set at 1/2.5th of a second and capturing a full rotation. But I have had other pictures where the camera was set at 1/5th of a second for a full rotation.
What LED’s are you using good sir…?