PPolySim OS
For Hobbyists & Makers · Forward Kinematics

Forward Kinematics for a robot arm

Built for hobbyists & makers exploring it for fun. Play with real physics and math, no license and no setup — just open and tinker. Simulate a robot arm live below — adjust the inputs and watch it respond, right in your browser.

Forward KinematicsLive

Controls

Presets

Forward kinematics computes where a robot arm's tip ends up from its joint angles. Each link rotates relative to the previous one, so the transforms chain together. It is fast and unique — every set of angles gives exactly one end-effector position — which is why controllers use it constantly.

▶ Run in Python

Data Inspector

End X172.2
End Y110.4
Reach204.6
Links3

Governing equation

Reading this result: Reach 205 sits near the 210 maximum: the three links are nearly collinear, so the arm is almost fully extended.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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More with Forward Kinematics

Frequently asked questions

Is this good for hobbyists & makers?
Yes — this version of "Forward Kinematics for a robot arm" is framed for hobbyists & makers exploring it for fun. Play with real physics and math, no license and no setup — just open and tinker.
Do I need to install anything?
No. It runs in any modern browser, free, with no account required.