This is a visually stunning fancy dress costume using LED rope lights and a plastic washing basin to create a deep sea bioluminescent jellyfish thing.
Perfect for Halloween, or any party where it's going to be dark. People will stop in their tracks to start dancing round you, or simply have a spasm. You will feel like a total attention whore, but you will love it too.
Step 1: Summary
Step 2: LED Rope Necklaces
you can buy them here in the uk
here in the US
multicolor tube necklace
Step 3: Mount the LED Ropes to the Basin
I used hot glue to mount the battery end of the lights to the inside of the basin.
Use sandpaper to rough the surfaces first, then clean them thoroughly so it sticks better. people WILL pull your tentacles.
Leaving 5cm of plastic tube inside the basin. This will let you use a cable tie around this soft bit of the rope and leave everything nice and secure.
Step 4: Tentacles in Place
I also put 3 LED rope lights in the top of the basin to light the bell of the jellyfish. If I did it again, I would do more lights in the basin, as it really adds to the effect.
I used even more hot glue to fill all the gaps between the LED rope lights and the basin, before tightening up the cable ties. I'm glad I did this because a bunch of girls in a dance tent utterly mauled my tentacles, but it all held together.
Step 5: Wiring It
bascally, you are wiring all the rope lights together in paralell.
Step 6: Control Box and Power Supply
you don't need this and wiring a simple on-off switch is fine.
I then hooked it all up to a 3 D-cell battery pack. I knew this was overkill, in terms of how much charge I'd need, but i was at a festival for a whole 4 days and didn't want to take any chances. you could probably get away for 3xC-cells or even 3xAA cells for a long night.
you put the 3 cells in series, to make 1.5V x 3 = 4.5V
then you put all the rope lights in parallel.
Step 7: Mounting It
I then glued the control box to the back of the helmet, and ran ries down the battery pack on my belt. This is because I was worried about ahving too much weight on my head.
If you were using C or AA cells though, I think you could mount them on the helmet too, and probably not sustain lasting neck damage.
Step 8: Done
I hope you liked this instructable, please feel free to ask questions or suggest modifications.