![]() ![]() Resistor ensures that the state of the push button is really 0 Volt when the button is not pressed. Therefore, in this circuit we use a pull-down resistor. This small current can prevent the Arduino from reading the state of the push button properly. It may be that the push button does not block 100% current. The problem now is that you have a "floating" state if you don't press the button. As soon as we press the button, the 5V is connected to pin 12 and the Arduino sees this as HIGH. In principle, the push button should now be able to do all its work. ![]() The 12 on the Arduino -> the pin top right of the push button.The 5V on the Arduino -> the pin lower left of the push button.Press the push button exactly over the center gutter in the breadboard. The circuit 4-pin push button connected to the Arduino This connection is not broken until the button is pressed. Here all pins are connected to each other. A Normally Closed switch is the mirror image. This means that the button is open by default and therefore does not connect the pins. This push button is a so-called Normally Open button. As soon as we press the button, all pins are connected to each other. Pin 1 and 2 are connected to each other, just like pins 3 and 4. ![]() On the right you see a schematic representation of the push button. schematic representation of a push button Push buttonĪ push button has different names such as push button, switch and tactile switch. This button allows you to download the code, circuit diagram and other files relevant to this Arduino tutorial. For example, did you know that it is useful to use a pull-down resistor? New? Then read on □ Course materialĪt the bottom of this page you'll find the course material button. In this Arduino tutorial for beginners I teach you how to read a push button the right way. ![]()
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