Switch robot GPS subscription from custom saltybot/gps/* std_msgs/String topics to the canonical /gps/fix (sensor_msgs/NavSatFix) and /gps/vel (geometry_msgs/TwistStamped) published by the SIM7600X GPS driver node. - /gps/fix: read msg.latitude/longitude/altitude/status.status directly - /gps/vel: compute speed (sqrt(vx²+vy²) * 3.6 km/h) and heading (angular.z radians → degrees) from ENU velocity components Closes #709 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Description
SaltyLab self-balancing bot firmware (STM32F722)
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