Difficulty: Simple (FREE/PRO version only)
Here Galapagos is set up to play around with the position of the diagonals of a truss to achieve minimum deflection. Instead of using line geometry to generate the beams, here indices of the points are used to create the beams and supports.
Get the grasshopper definition here: 03_Optimization_TrussDiagonals.gh
This example uses Karamba3D 1.3.3.