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2-link planar arm IK
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Convert servo angles into approximate PWM pulse widths.
Convert motor RPM and wheel diameter to linear speed (m/s, km/h).
Estimate flight time based on battery, payload, and motors.
Solve joint angles for a 2-link planar manipulator for a desired X,Y target.
Provide link lengths and a target coordinate. The tool computes elbow-up and elbow-down solutions where available.
Useful for simple robotics arms, prototyping motion and verifying reachability.
