This thesis focuses on the design of a dual-axis servo motor position control using a multi-microcontroller architecture. The position command (attitude of the air vehicle) is computed by the multi-microcontroller system. The thesis mainly consists of hard design (servo motor control board), software design, and attitude computation. Rodrigues Parameters based unscented Kalman filter using C language is implemented in this embedded design for attitude determination. Position control and speed of response of the servo motor is verified through experiments using the finished system. Comparison of attitude computation using quaternion based and Rodrigues Parameters based unscented Kalman filters is also addressed in the thesis.