[Nicholas Rehm] works during the day at the Applied Physics Laboratory at Johns Hopkins, Maryland, so has considerable experience with a variety of UAV applications. The question arose about how the ...

Reaction wheels are useful things, typically used by satellites to keep themselves oriented the right way up in space. Turning the reaction wheel creates an equal and opposite torque in the spacecraft ...

This project features a simple two-wheel robot that has the ability to balance itself when it’s going to fall. The robot possesses a switch as a sensor that starts the motor and moves the robot to the ...