Mobile construction robot

A mobile construction robot which is configured for machining or finishing an architectural construction site, comprising:

• a driving platform;
• a driving control unit, wherein the driving control unit controls movement of the driving platform over a ground of the architectural construction site;
• a robotic arm mounted onto the driving platform, wherein the robotic arm includes a rotational joint which has a rotary drive and a rotary sensor;
• an end effector mounted to the robotic arm for machining or finishing the architectural construction site;
• a robot control unit, wherein the robot control unit interacts with the rotational joint for moving the end effector in a first position and a second position;
• an optical marker attached to the end effector;
• an optical tracker, wherein the first position and the second position of the optical marker relative to the optical tracker is measurable by the optical tracker;
• and
• a calibration unit, wherein a position and an orientation of the driving platform is determinable by the calibration unit based on a measured first position and second position of the end effector relative to the driving platform and a measured first position and second position of the optical marker relative to the optical tracker.