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Buttons are a common component used to control electronic devices. They are usually used as switches to connect or break circuits. Although buttons come in a variety of sizes and shapes, the one used here is a 6mm mini-button as shown in the following pictures. Pin 1 is connected to pin 2 and pin 3 to pin 4. So you just need to connect either of pin 1 and pin 2 to pin 3 or pin 4.
The following is the internal structure of a button. The symbol on the right below is usually used to represent a button in circuits.
Since the pin 1 is connected to pin 2, and pin 3 to pin 4, when the button is pressed, the 4 pins are connected, thus closing the circuit.
In this kit, we provide two types of buttons. The one mentioned earlier is a small button, and there is also a large button. They have the same principle, only different in size.
Example
basic_button(Basic Project)fun_digital_dice(Fun Project)fun_smart_fan(Fun Project)fun_pong(Fun Project)iot_mqtt_publish(IoT Project)new_hid_keyboard