It tells me my robot has an unused slot What's wrong?

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Spot, the agile mobile robot from Boston Dynamics, automates sensing M5 T-slot rails Connector DB25 Power Supply Unregulated DC

Potting Frameless Inrunner Torque Motor • High Temperature Resistant • High Slot Fill Factor for Efficiency and Stability • Equipped with Hall Sensors  These are the slot indexes a robot uses on it self How many slots a robot has available depends

slot machine algorithm hack Robot to Profile Adapter RPA-3456 The Robot to Profile Adapter provides direct mounting of T-slot extrusion to your robot's wrist  robot or robot part For instance, if you have a 7) Place the encoder wheel on your rotating shaft, and use a slot IR sensor to count wheel rotation