Potentiometers are variable resistors ... from the joystick module to the Arduino GND rail, and +5V to the Arduino +5V rail. Connect the VRx pin directly to Arduino A0, and the VRy pin directly ...

This is an easy tutorial showing how you can control the brightness of an LED or adjust the speed of a DC fan using Arduino Board, a small BC547 transistor and a potentiometer. In my example the whole ...