This slide shows a solution that puts the microcontroller into the feedback loop. It would allow users to precisely control the object’s position using the PWM14 to drive the servo until they get the correct position information. Going back to the example of an embedded control system that moves an antenna that tracks a mobile signal source, again assume that the antenna gets to the correct position. In this embedded system design, the antenna is held there by the software. When a strong wind pushes the antenna, the software maintains the antenna’s position. When the wind becomes dangerously strong, the MCU could just analyze how much the antenna is “bent” by the wind by comparing the position feedback to the location to which the software directed the antenna. If there is a large discrepancy, the embedded system could decide whether to apply a correcting force, warn the operator, or automatically abort the signal tracking and save the antenna by turning it into the wind. As the illustration shows, the application software in this “MCU in the feedback loop” solution allows a wide range of flexible operational options. Moreover, those options can easily be changed if needed.