How does a breadboard work?

In this article, I will explain how a breadboard works. People who are new to the world of electronics have probably never heard of it. That's not a problem—you'll understand what it is and how it works right now.

So, what is a breadboard? It is a board used to test electrical circuits without soldering. It is usually used to check if different projects work before being permanently assembled, or simply to create your own projects on it. Breadboards are very easy to use, which is why they are so popular.

How does it work?

• It has holes that are internally connected in rows.

• You insert components (resistors, LEDs, wires) into these holes.

• The central rows are used for connections between components.

• The side rows are usually used for power supply (+ and −).

• Current flows only between holes that are internally connected.

Below is an image to help you understand how current flows.

As you can see, in the second image you can notice some metal contacts. These internal metal strips conduct electricity through the breadboard. Below is an image showing a single contact. 

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