For Engineers · Inverse Kinematics
Inverse Kinematics for a robot maze
Built for engineers using it for real design work. Go from concept to a running model in the browser, then scale to the cloud when needed. Simulate a robot maze live below — adjust the inputs and watch it respond, right in your browser.
Inverse KinematicsLive
target → joint angles
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Inverse kinematics is the hard direction: given where you want the tip, find the joint angles. For a 2-link arm the law of cosines gives a clean closed form — but with two solutions (elbow-up or elbow-down) and none at all when the target is out of reach. Drag the target, or click anywhere to move it there.
Data Inspector
Joint 1-20.8°
Joint 291.4°
Target dist126
Total reach180
Reachableyes
Governing equation
Reading this result: This 2-link arm (segments 100 and 80, total reach 180) has a closed-form inverse: the law of cosines gives the joint angles that place the tip exactly on the target, with two branches — elbow-up and elbow-down. Iterative methods like CCD or the Jacobian transpose converge to one of them.
Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.
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Frequently asked questions
- Is this good for engineers?
- Yes — this version of "Inverse Kinematics for a robot maze" is framed for engineers using it for real design work. Go from concept to a running model in the browser, then scale to the cloud when needed.
- Do I need to install anything?
- No. It runs in any modern browser, free, with no account required.