RGB-color image on POV

[Sanela]

Hello!

I'm interested in RGB LED POV. Does anybody know who to contact, or if anxone has already developed such a thing? I would like to show a full RGB color image on it with resolution that fits the POV. Please help me.

Sanela

[wcravens]

This would compound the problem greatly. You would need to multiply nearly everything in the circuit by three (one for each color). Sure it could be done but it would be a significant undertaking and perhaps not that groovy for a bicycle application.

[DoctorDidj]

I built a four-color POV display (RGB plus amber, 800 elements tall) several years ago, and it's a major pain. You do have to solder three times as many solder joints (in my case, four), and packing components that densely means using small surface-mount parts, which are MUCH more of a pain to solder than through-hole parts. So yes, it's more than three times the cost!

I'm sure you can get separate SpokePOV units in red, green, and blue, mount them all on one wheel, and diddle the images you give them so they all end up aligned. Honestly, that's probably easier than building RGB hardware.

[povpro]

hi everyone,

while it is true that replacing monochromatic leds with RGB leds generally
increases the complexity and cost of everything by a factor of three, it is
worth considering that there are a lot of interesting displays which can be
created with fewer leds than what a fully populated Spokepov has. As an
example, last summer I built a US flag spokepov out of regular red, white
and blue leds (pictures of it are posted to the adafuits photo pool.) Even
though it was only single-sided and generated a static display I
was surprised at what a big hit it turned out to be. This has led me to
believe that a full-color spokepov with only 13 leds could be a very
worthwhile project. Also, with RGB leds becoming so ubiquitous, there are
display drivers which do almost everything for you (and yes, they come in
PDIP packaging), so it really is just a matter of hooking things up.

ladyada - even if you don't get around to creating an RGB version of the
Spokepov, one thing that would be very helpful for us pov
experimenters/artists would be an RGB-led break-out board to adapt the
small lead spacing of the RGB leds to something more amenable to
prototyping. I don't know what the economics of such a board would be,
but if you had it available for sale, I'd buy a least a few.

[adafruit]

an RGB minipov project has been waiting for a drop in RGB led prices

[povpro]

an RGB minipov project has been waiting for a drop in RGB led prices

If you need any help beta-testing the PCB, just let me know. I can supply my
own AVRs, discrete passives and RGB-leds (my order should be arriving on
the slow boat from China in a couple of weeks). Any special driver chips I'd
be willing to sample or even buy - just let me know!

[charlie_r]

would it work to build 2 (or 3) of each color (RGB) and use a photo editing program to separate the colors of the image you want to use?

sinchronizing them might be a pain, however.

any ideas?

[adafruit]

its harder than it seems!