This is the first version of a jellyfish, with each of the colors lit. Since I made this one, I have finished one more, completed one wiring harness, and stripped the wires for two more. There will be five C. Hallucigenia when I'm done. I ordered six umbrellas, but the sixth one will be used as a sacrificial test subject to determine if there is an acceptable method to make them slighly translucent. I would prefer that the bodies of the jellyfish be translucent in order to diffuse light better. So far, the possibilities for doing this are window film that has a translucent design on it (so they can have a frost pattern or something on them) or matte-finish spray varnish. The film doesn't have adhesive, though, and the spray might dry up and flake off, hence the use of a sacrifical tester before full deployment.
Assuming all goes well this evening, I will have the LED wiring and some of the installation done by the middle of the week, and be all set to install the controller boards before the weekend. I anticipate that the jellyfish will not draw more than 1.5A at their maximum current, so the 7.2V 2200mAh RC car batteries will be more than enough to run them overnight. I'm tempted to build in an 8-hour cutoff, so that I can avoid having them run during the day and just go around turning them on at dusk.
Of course, if I do that, I'll want a costume and a magic wand to do it with, and that means building a reed switch and a micropower sleep mode into the system, and making a magic wand with a magnet, and so forth and so on until I'm standing on a mountain in Nepal with a yak leash in one hand and a can of shaving cream in the other.
I also got a slingshot and fishing reel. The slingshot will be used to shoot a weight tied to a fishing line over branches that I want to use to hang a jellyfish. It may be that fishing line is not sufficient for this task, but I think a high-test line will certainly hold. I intend to test the deployment system before heading into the woods, so I'll have a solid way of mounting them by then.