I show how i build one of my favorite Mesh Nodes in this video. I added it up and it's about $100 to build this the way it was shown. Links to the parts it took to build this. Rak Wismesh B1: Alfa 915 antenna: N connector to IPEX: USB Extension gland: Waterproof Box: Battery: Magnetic Feet: 3D File for the Wismesh B1: