Power tool

摘要

A power tool (10) comprising a housing (12), a motor (14) disposed in the housing, a tool holder (22) driven by the motor, a control circuit for controlling the motor, a rotary input rotatable relative to the housing, and a rotational sensor for sensing the rotational position of the rotary input relative to the housing. The rotary input can be a thumbwheel or a handle (28) that rotates relative to the housing (12). The control circuit receives input from the rotational sensor for controlling motor speed, rotational direction, etc. Other user interface mechanisms are disclosed as well.