Stepper motors are ideal for applications where it is necessary to know the angle of rotation, for example in robotics. Unlike a normal motor, stepper motors can control the steps individually andcan therefore detect the exact position. For easy controlling such a motor, a driver IC like the L293D or the ULN2003 are needed. The use of both drivers is shown in this tutorial.The more common of those two is the ULN2003, this is also often included on driver boards with the 28BYJ–48th There is a voltage of 5V and 12V possible. The L293D however opens the possibility to connect an external power source, whereby for example a higher amperage (which in some motors is necessary) can be connected.