measure force

Hi all :), below is a truss I simulated in a truss calculator. Just wondering, how to solve for the the compression and tension of each member and are there any method that can solve this? This is not homework, I just want to build a truss calculator app so I need to understand the physics...

Hi all! I dont know much about sensors or hardware in general (Im a computer science student) so I would really appreciate some help here :) I am looking for a flexible impact force sensor (for measuring a punch) , it needs to be around 10X10 cm and I want to connect it to Arduino or raspberry...