WASD). Driving is ramped: releasing the stick or losing Wi-Fi slows the robot down smoothly instead of cutting out.
Speed modes
The multiplier scales
motion_control.max_speed from settings. The mode is stored on the robot, so every app sees the same one. Recording an episode or a map holds the robot at Med.
Leader arm
The leader arm is the small controller arm that ships with MARS. Move it and MARS’s arm copies the joint angles. Squeeze the trigger at the tip to open and close the gripper. It has no camera and its proportions differ from the robot’s arm. Neither matters: training records the robot’s joints and cameras, not the leader arm’s.- Phone app
- Web app
Plug the leader arm into your phone with the double USB-C cable, then press the red Arm button.

Navigation modes
MARS starts mapping by itself the first time it connects. To make a new map, go to Configuration → Mapping → Create New Map, drive slowly through every room and doorway, then save. Keep the arm folded while mapping.
For developers, the current mode is published on
/nav/current_mode.
