6LET’S SOLDER!
In Chapter 5, you used a breadboard to build new circuits. A breadboard lets you quickly test new ideas and experiment with different components to see the result, but it isn’t a permanent solution. Components can easily fall out, and there can be loose wires all over the breadboard. When you want to use a circuit for a long time without changing it, it’s better to solder the circuit to a circuit board. Soldering is kind of like gluing: you melt a material called solder onto the component legs so the components stick to the circuit board. A circuit board has holes like a breadboard, and when you solder components to it, they become ...
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