WheelEncoder
This is a ROS message definition.
Source
# Frequency from wheel encoder
# If directional (below) is True, positive frequency means forward, and
# negative frequency means backward.
# If directional is False, frequency is non-negative and has no directional
# information
float64 frequency
# True if frequency sign is significant; false else
bool directional
# ID of the wheel with which this data is associated
uint8 id