![]() ![]() Suppose there is no possibility to compare the length, or someone has already cut off a part of the legs before you. We look at the legs and see that they are of different sizes. ![]() The first rule is easy to follow if you know where the LED is minus and where the plus is. However, this applies to all electronic devices. The LEDs have limits on the current flowing through them, so it is important to ensure the correct power supply mode.The LED has positive and negative contacts, so it is important to observe the polarity when connecting.When connecting the LEDs, it is important to know the two main rules: The principle of operation of the LED is shown in the following picture. Light in the form of emitted photons appears in a special layer ( p–n junction) when a certain current passes through it. We need to know about LEDs (except that they glow) because they are semiconductor devices. We will use the most straightforward and cheapest components, which can be easily purchased in any online store. There are many LEDs of different versions and models in different housings and with different characteristics. And it is natural that any DIY project starts with examples of work with light – flashing, flickering, switching. LED is one of the most common electronic components used in electrical projects. 5 Conclusion Connecting the LED to the Arduino ![]()
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