Dual direction trimmer with self detection capability

A hand held power tool comprising:

• an elongated member operably coupled to a handle assembly;
• a working assembly disposed at one end of the elongated member and configured to be bi-directionally rotatable to perform a cutting function using cutting equipment attachable to the hand held power tool;
• a power unit operably coupled to the working assembly to selectively cause rotation of the working assembly;
• and
• a control assembly configured to control the selective rotation of the working assembly,
• wherein the control assembly is configured to:
• receive information indicative of a type of cutting equipment attached to the trimmer based on operation of the working assembly in a selected direction of rotation;
• determine the type of cutting equipment attached based on the received information;
• and
• selectively insert operational constraints based on the type of cutting equipment and the selected direction of rotation.