Some microswitches have the two ground terminals in opposite positions. The inverted terminal is not generally used in controller making. Technically speaking for most microswitches, the L-shaped terminal on the side is the signal terminal, the terminal nearest it is the ground terminal, and the other terminal is an inverse ground terminal. Many microswitches have three terminals, with the third terminal making a completed circuit when the switch is not engaged. It does not matter where the ground and signal are attached to the switch as long as the appropriate circuit is set for the desired engagement. This completed circuit is how the commands of simple joysticks and buttons are activated on a PCB board. The power switch is also plugged into the joystick board. This board has an Ethernet plug, so you merely need to plug in the included Ethernet cable, and then wire the other end of the cable to the terminal blocks of the controller board. When the switch is pressed, the current of electricity is connected and the attached signal/command is engaged when it is released, the circuit is cut and the signal is disengaged. The kit also includes a joystick board, which is soldered on to the joystick terminals. Joystick and button switches have at least two terminals (also called lugs) one attaches to a signal and the other to a ground. A microswitch is a small momentary contact switch requiring little force the actuation of a standard microswitch uses a small button with a distinct clicking sound (and feel). A momentary contact switch is one that must be pressed to engage and springs back when released these are used by simple joysticks and buttons. Basically a switch is an on-off device usually working by completing an electrical circuit in one position and cutting it in the other.
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