measurements using an oscilloscope as a means of proof of voltage and frequency are needed to see whether the electronic circuits that we design and manufacture are in accordance with the ideal circuit concepts and components when applied to electronic circuits, here we can see the results of osciliscope measurements on the DC motor rotation speed circuit with the PWM method with IC 555 as well as inverting the direction of rotation with the H-Bridge electronic circuit. when there is no load condition the DC motor circuit still shows the position of the signal on the square wave oscilloscope, but when it is connected to a DC motor, the PWM circuit signal will change like a sawtooth signal with then when the potentiometer as a manual input control the motor rotation is rotated so that the motor moves fast then the form the signal changes to a triangle and then to a signal in the form of waves in the sea on an oscilloscope, namely at the fastest motor rotation of 2500 RPM .. that is the function of the oscilloscope instrument and control so that we can observe changes in circuit signals and perfect the electronic circuits that we make to make it more suitable what we want in the production of manual and automatic control electronic equipment.