DESCRIPTION: This a build of the Vector Weapon Kit circuit from The Maker Shed. I bought it for my son for Christmas but I think I might have gotten as much enjoyment out of it as he did (if not more)! We made a custom housing out of stuff we had around the house and added a 2nd LED in parallel with the LED in the vactrol (LED + LDR combo) so, you can see how the LED in the vactrol controls the sound and it also make it look cool!