PF explorer was probably young humanoid's best off-road robot to date. Utilizing four PF XL motors for drive, the robot could easily traverse over grass with is Mobile Devastator wheels. The robot featured a motorized actuation in the center, thanks to inspiration from some of NXDave's inventions, such as
A.R.T. A touch sensor bumper allowed object detection, along with a swiveling ultrasonic sensor that detected the furthest path upon detecting an obstacle. This was inspired by
swaziboy's Smartbot series. A compass sensor on the back kept the robot aligned along a heading, providing it was not too far off the heading to begin with.
