Make your car turn in right hand circles for practice. In the program above, the M1 terminal on the motor shield is named LeftMotor and the M2 terminal RightMotor. This program was written in the void setup() section, so it will only run once, i.e. not loop. However, you can make it repeat by pressing the reset button on the shield. The right motor is set at a lower speed than the left so that the car will turn in right circles. These motors don’t start turning until about 100/255 speed or about 2.4 V so the right wheel is turning slower than the left. The delay of 10000 millisecond will give the travel 10 second and then stop.