Robotics Simulator - Planar Arms, Kinematics & Keyframes

Motion workspace

Saved locally

PLANAR VIEWmm · degrees

X 0 · Y 0

Click to move target · Drag the blue target

100%

END EFFECTOR—Cartesian position (mm)

IK TARGET ERROR—Euclidean distance (mm)

ARM REACH—Total joint length

SIMULATION STATUSReadyNo collision detected

MOTION DESIGNER

Keyframe timeline 0 poses

0.0 / 0.0 s

No trajectory audit has been run.

Each pose stores joint angles. Playback interpolates joint angles, not a collision-free Cartesian route. Red warning means contact with an obstacle.

Using Robotics Simulator

Choose an arm preset, set link lengths and joint limits, then place a target or adjust joint angles. Capture and arrange keyframes, review sampled trajectory warnings and save editable JSON alongside supported CSV or image exports.

This is educational 2D planar kinematics, not robot dynamics, 3D motion or hardware control. Sampled collision and joint-speed warnings do not guarantee safe paths. There is no torque, force or acceleration model. Limits include 80 waypoints and 32 obstacles; trajectory CSV is not a runnable hardware motion program. Export backups beyond browser drafts.

Choose an editable planar arm, trajectory data or diagram

Project JSON: retain supported arm settings, obstacles and keyframes.

Waypoint/trajectory CSV: inspect modeled path data rather than a runnable robot program.

SVG or PNG: share a supported view of the planar setup.

Sampled warnings: review modeled speed/contact checks within their sampling limits.

Practice: compare two planar arm poses

Choose an arm preset and inspect its link lengths and joint limits.

Adjust a target or joint angles and capture two supported keyframes.

Preview the path, inspect warnings and save JSON before exporting data or a snapshot.

This is an authored kinematics exercise, not hardware control or verified safe motion.

Robot modeling questions

Can I send the exported CSV directly to a robot controller?

No. It is educational modeled data, not a runnable hardware motion program. The tool does not provide dynamics, hardware control, force, torque or acceleration modeling.

Does a path without warnings prove it is collision-free?

No. Contact and joint-speed checks are sampled and can miss events. Bounded inverse kinematics and planar visualization do not establish safe motion planning.