Two of my students created two very different robotic applications to perform the same task. The task: Have the robot move forward, measuring the distance to any object in its way. The robot will beep a piezo buzzer according to the object's distance; the frequency should increase as distance decreases.Walter Stephenson's robot (the first one shown in the video) performs the task using multitasking techniques. That is, his robot moves forward and reads the distance while simultaneously and beeping the buzzer. (For more on multitasking with the BX-24 see my tutorial at www.basicxandrobotics.com/tutorials/mult itasking/index.html.The second robot in the video was programmed by Chris Kerr. Chris' program uses an ingenious algorithm to beep the piezo buzzer without multitasking techniques. Even though Chris' program works reasonably well, Walter's multitasking application is obviously smoother since it doesn't have to wait for the buzzer to finish beeping before pulsing the robot's wheels.Robodyssey Systems manufactures the Mouse robot and the RAMB II motherboard you see here. It also sells the Sharp infrared range finders and piezo buzzers shown in the video. The robot's brain is NetMedia's BX-24 microcontroller, which is programmed using the BasicX language. I am the author of the world's only BasicX textbook; if you are interested in learning how to program your own robot, see my website at www.basicxandrobotics.com.

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