MotionGen vs ARK

MotionGen synthesizes and simulates planar four-bar linkages. - It solves the motion generation problem for N-position problems. - Incorporates fixed- and moving-pivot and line constraints for 3 and 4 position problems. - Use MotionGen to design and simulate single degree of freedom linkages for your robot or machine.

ARK is the project-sharing platform for makers, engineers, students, and creators who want to build real things and help others do the same. The new ARK experience goes deeper into the create-project flow, making it easier to document your work with detailed instructions, structured steps, materials, files, and notes so other people can understand your process and give the project a crack themselves. The app now features a sleeker, cleaner UI built around discovering and sharing projects more easily. Projects can be tagged directly in Explore, with difficulty tags like Beginner, Intermediate, and Advanced, as well as category tags such as Robotics, AI, 3D Printing, Electronics, and more. Users can also headline their posts with intent-based tags like Help Needed, Shameless Promotion, Build Log, Showcase, or Question, making it easier for the community to know what kind of feedback, support, or attention a post is looking for. ARK is becoming more than a place to post what you made. It is a place to document how you made it, help others recreate it, and build a living library of real-world STEM projects.