Truss hub and parts with variable configurations

A truss hub device, comprising:

• a first interface portion, having a circular outer shape, a second interface portion spaced from the first interface portion, having a circular outer shape, a plurality of different connection parts along said circular outer shape, the connection parts connected to and between the first and the second interface portions, wherein each of said connection parts being along said circular outer shape, each of said connecting parts having upper and lower attachment pins,
• a first attachment piece connected to at least first and second of said different connection parts on said hub, said first attachment piece having first and second truss connection interfaces which are sized and shaped to attach to a first structural truss, and said first attachment piece having a first plate, connected between and attached to said first and second connecting parts, said first plate having a flat surface extending between said first and second connecting parts, the flat surface having spigot pins extending therefrom attached to the attachment pins of the connection parts, and a stiffener plate, having a surface oriented perpendicular to the flat surface of the first plate, and extending at least partway between said first and second connecting parts and stiffening a connection between said first and second connecting parts;
• a second attachment piece having spigot pins, the second attachment piece connected to at least third and fourth of said different connection parts on said hub, the spigot pins of second attachment piece connected to the attachment pins of the connection parts, said second attachment piece having first and second truss connection interfaces which are sized and shaped to attach to a second structural truss and said second attachment piece having a second plate, connected between and attached to said third and fourth connecting parts, the second plate having spigot pins extending therefrom attached to the attachment pins of the connection parts, and a second stiffener plate, oriented perpendicular to the second plate, and extending at least partway between said third and fourth connecting parts and stiffening a connection between said third and fourth connecting parts, and wherein an angle is defined between said first and second structural trusses based on which of said connection parts connected said connection pieces.