[PERFECT SIREN] has 2 arduinos, each with their own set of functions. The first arduino uses a PIR motion detector in the right eye socket to sense movement. 

If there is no sign of movement the siren will stay in its default “Passive” state, indicated by a solid green light. If it is in the passive state for 30 seconds it will begin singing.

If motion is detected, the siren will call, and its LED will turn red. This is its “Active” state. While active, the light will remain red, and let out periodic beeps, and this state will continue as long as motion is detected. 

When motion is no longer detected it will begin rapidly calling, and if no motion is detected for 10 seconds, it will return to its passive state.

If something approaches within a certain distance of the siren it will begin to sing. The tone of its song will change depending on the distance. When something gets within biting range, it will stop singing, and bite with its step motor controlled mandibles, before returning them to the open state.

The face of the siren is a kigurumi mask that I modified in blender, 3d printed with pla, sanded and painted to a smooth finish. The mandibles were designed in adobe illustrator and cut out of acrylic, then textured and painted with modge podge, spray paint, and acrylic paint. 

The smooth white mask resembles the clean and luxurious look of modern commercial tech contrasted against the worn, violent. and chaotic innards and mandibles.

Oh High profit weapon, Shining blood diamond, Perfect Siren.

art from “BLAME!” by Tsutomu Nihei

“Anime Gaze” by Ju Wang