Appendix A. Electronics – the Basics
The Arduino is an electronic platform. In order to use it properly, we need to know at least some basics about electronics, such as:
- Working of electric current
- Ohm's law
- Diodes and LEDs
- Working with breadboards
Working of electric current
Here, we will explore how electric current works. Electric current represents the flow of electrical charge in a conductor and it's measured in amperes, symbolized by A. Voltage represents the difference in electrical potential between two points of a circuit. It is measured in volts, symbolized by V. Let's think of a battery. Each battery can be considered a voltage source, and it has two terminals, a positive (+) and a negative (-). Following is one of the standardized symbols ...
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