The H-bridge is generally used for reversing the polarity of the motor supply voltage but it may be also used for
braking the motor (the motor stops suddenly because of short-circuiting its terminals) or for allowing the motor to
freely rotate until still. This work presents and experimental stand for the PWM control of a DC motor used for
driving a conveyor belt. For the supply of the DC motor an H-bridge has been used that allows the reversal of the
rotation wise of the motor. The PWM signal is generated by an ARDUINO UNO board, built with an Atmega 328
microcontroller, [5], [6]. For controlling the ARDUINO UNO board a program has been issued in LabVIEW 2013
programming environment, [7].