This code runs motors B and C until they stall. The code takes two rotation sensor readings, with a very short delay in between them. The loop exits when the difference between the two readings becomes less than a certain threshold. So if a motor slows down because it encounters an obstacle, the code will stop running the motors. A short delay in the beginning is necessary so that the motor can start moving before the rotation sensors start taking readings. Note that if the speed of the motor is decreased, the threshold for the difference needs to be lowered as well. This program was adapted from Brian Davis' code.

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

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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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.

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The code will run Motor A in a random direction (via a Random-Comparison Block combination), at a random speed, for a random amount of time. The motor speeds will fall between 0-100 and the time will fall between 0-3 seconds.

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

This program beeps, runs Lurch-1, then beeps again. 

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.