SunFounder 3in1 Kit
Hello, Breadboard!
A breadboard is a rectangular plastic plate with a bunch of small holes. These holes allow us to easily insert electronic
components and build electronic circuits. Breadboards do not permanently fix electronic components, so we can easily
repair a circuit and start over if something goes wrong.
Note: There is no need for special tools to use breadboards. However, many electronic components are very small,
and a pair of tweezers can help us to pick up small parts better.
On the Internet, we can find a lot of information about breadboards.
• How to Use a Breadboard - Science Buddies
• What is a BREADBOARD? - Makezine
Here are some things you should know about breadboards.
1. Each half-row group (such as column A-E in row 1 or column F-J in row 3) is connected. Therefore, if an
electrical signal flows in from A1, it can flow out from B1, C1, D1, E1, but not from F1 or A2.
2. In most cases, both sides of the breadboard are used as power buses, and the holes in each column (about 50
holes) are connected together. As a general rule, positive power supplies are connected to the holes near the red
wire, and negative power supplies are connected to the holes near the blue wire.
3. In a circuit, current flows from the positive pole to the negative pole after passing through the load. In this case,
a short circuit may occur.
Let us follow the direction of the current to build the circuit!
78 Chapter 2. Get Started with Arduino
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