4-Bar Linkage

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This tool is used to visually demonstrate the motion that is present in a 4-Bar linkage skeleton diagram. It is designed to be used along with an instructor's lesson, so that students will be able to see the effects that linkage length, rotational position, overconstraining, or underconstraing a system will have on the motion of the system. This system was also designed to be modular, so you are not limited to using a 4 bar system you can use any combination of linkages (currently 4in, 5in, or 6in however you could modify he code to create whatever size linkage you want). Also, to keep the linkage pins from sliding out, put a zip tie on the cylindrical end once you have placed it in the hole.