Arduino Basics: Board Anatomy & Pinout
What are the main parts of an Arduino board?
An Arduino board typically includes a USB port for uploading code, a power jack for external power supply, and a reset button to restart the program.
What are the power pins used for?
Power pins provide voltage and ground connections for sensors and modules. Common pins include 3.3V, 5V, and GND.
What types of input/output pins does it have?
Arduino boards include several types of pins for connecting sensors, modules, and other electronic components:
- Digital Pins: Used as input or output to detect HIGH/LOW signals or control devices such as LEDs and relays.
- PWM Pins: Provide analog-like control by varying the signal duty cycle — useful for dimming LEDs or controlling motor speed.
- Analog Pins: Read variable voltages from sensors (e.g., potentiometers, temperature sensors) and convert them into digital values for processing.
How do I read a pinout diagram?
A pinout diagram labels each pin’s function, helping you identify where to connect components and avoid wiring errors.
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