This program runs Motor A until the light reading is less than 50. Once the light reading is less than 50, Motor A stops and Motor C runs for 0.25 seconds. This processed is infinitely looped. 

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The NXT can also be used to play music. By placing notes manually custom songs can be created.

This code uses a Loop to turn Motor A on-and-off three times. When downloaded to a single motor car, this program will accelerate the vehicle forward in three short bursts. The number of loops can be changed by modifying the Count of "3". Alternatively, if you want an infinite program, you can set the Control of the Loop to Forever.

This program is works like the Line Follower: Wait for Dark program but it uses a Switch. The program runs a Switch--in a infinite Loop--that runs Motor A and makes sounds when reading light. The program stops Motor A then runs Motor C for 0.25 seconds when reading dark.

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When run, this code will cause a car to "snake" forward in wide arcs. The length of the turns can be modified by changing either the time or motor power.

This code illustrates the Wait-for-Push command. When a touch sensor on Port 1 is pressed, Motor A will stop.

This code creates a wait for loop that will wait for a random amount of time. The code uses the random number generator and a loop that waits for the timer to equal the generated value. The random number is set between 500 and 5000, which causes the loop to wait for 500 and 5000 milliseconds. Code by Brian Davis.

This code uses two very important coding commands, Switches and Loops. The touch sensor Switch causes Motor A to go forward if the touch sensor is released and backward if it is pressed. The Loop causes the Switch to loop infinitely.

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In this program, a desired location is set at 50 degrees of the rotation sensor. This value is continually subtracted by the current rotation traveled. The difference is multiplied by two and this becomes the value of the "power" variable. The Compare Block determines the direction Motor C will travel: forward if "power" is positive, backward if "power" is negative. Thus, when the car first starts off, its current position is zero and its desired position is 50. Therefore, the power setting used is 100, which is full power forward. If the car overshoots its mark, the power setting will become negative and the car will travel in reverse. The goal of proportional control is to find a constant that will get the system to equilibrium in the shortest time with the least amount overshoot and the most accuracy.

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In this code, sound frequencies are played corresponding to changing light values. Light sensor readings, which fall between 0-100, are placed in a variable and multiplied by the constant 8. The value of that variable, which now falls between 0-800, becomes the frequency in Hz of the sound played. The frequency is also displayed on the NXT.