Guidance system for alignment with a power source

A method, comprising:

• receiving, by a controller comprising one or more processors, a signal from a rotation sensor associated with an arm of an electric machine for collecting current from a power rail, the signal indicative of a level of rotation of the arm;
• determining, based at least in part on the signal, an angle of rotation of the arm;
• displaying, on an indicator using one or more lights, an indication of the angle of rotation of the arm;
• and
• displaying, on the indicator, a direction that the electric machine is to be steered to reduce the rotation of the arm from a baseline rotation angle.

An electric machine, comprising:

• a power collecting arm to collect power from a power rail;
• a rotation sensor associated with the power collecting arm;
• an indicator;
• and
• a controller configured to:
• receive a signal from the rotation sensor, the signal indicative of a level of rotation of the power collecting arm;
• determine, based at least in part on the signal, an angle of rotation of the power collecting arm;
• and
• display, on the indicator using one or more lights, an indication of the angle of rotation of the power collecting arm.