Connect the CT2 at the bottom of the all mini PCB and place the circuit on the Gray board.
Our circuit is ready.
Turn on the power block and you can see the amount of current passing through the circuit.
When you rotate the knob of the potentiometer, you can see that intensity of the bright LED changing(increasing and decreasing). Similarly, during this, the bar of the bar graph also increases and decreases according to the amount of voltage passing through it. You can make this same project using a Buzzer, and see how the volume of the buzzer can be controlled.