The idea of this project is how to control the angle of a free pendulum using LabViw and Data Acquisition Card.
After a lot of thinking about the source of force, and after some advices form friends, we use a very tiny DC motor as a fan. This DC Motor is controlled using a PWM wave generated by DAQ.
The center of rotation of this arm is an Angle sensor, It is a variable resistor feeding back a voltage related to the angle.
The over all explanation will be in this topic
The force affects the arm cases a toque, this toque rotates the arm about the center of ro