1. 1. Initializing and configuring the embedded board, http://https: // www.udoo.org/udoo-dual-and-quad
   2. Understanding the working of audio sensors, http://www.electronics-tutorials.ws/io/io_8.html
   3. Guidelines on usage and handling of the camera. http://www.logitech.com/en-us/product/hd-pro-webcamc920
   4. Bash shell scripting. http://https: //www .tutorialspoint.com/ unix/unix-what-is-shell.html
   5. Dynamixel information page, http://http: //www .robotis .us/ dynamixel
   6. Barron, J. L., D. J. Fleet, S. S. Beauchemin, and T. A. Burkitt. “Performance of optical flow techniques”. CVPR, 1992