The last few weeks while Paul has been developing the code for the Pi Zero W we'll be using in this build for IoT networking and sound effects. I've been working on the hardware and ordering parts for 16 detectors. As the detectors will be out in the weather they will need to be waterproof and have the ability add other features at a latter stage.

The unit will be slightly different to this as I've found a supplier of Outdoor UV resistant Acrylic Spheres.

The spheres I will be using are on order and should arrive in a few days along with the waterproof enclosures both I've been able to source at wholesale.

Post Top Light Exterior Opal Acrylic Sphere E27 in 20cm Galactic Oriel Lighting. Exterior IP44 spherical opal acrylic post top. Complete with black polycarbonate base to suit 60mm outside diameter post.

Gasket seals, stainless steel hardware and IP66 rated , Opaque cover: 200(L) x 200(W) x 130(D)mm, ncludes a 1.8mm galvanised chassis for mounting electronics.