What is inside an Arduino?

Specification

There are many different types of Arduino boards available. The most common board is the Arduino Uno. The Arduino Uno consits of the following components

• Processor: 16 Mhz ATmega328
• Flash memory: 32 KB
• Ram: 2kb
• Number of analog inputs: 6
• Number of digital I/O: 14 (6 of them pwm)
• Power regulator: 7-12V input voltage regulated to 5V.

The operating voltage of the ATmega328 microcontroller is 5V.

The Arduino board is based on the ATmega328. It adds some simple components to make it easy to work with this microcontroller. If you would like to build the board yourself check out the following links to find out how to create the various components.

Components on the Arduino Uno Board

• Power Supply Regulator Indicator LED
• Microcontroller Timing Circuit
• Reset switch
• USB To Serial Interface

More information

• The basics of Arduino programming
• The contents of the Arduino
• How to set up the Arduino IDE
• Creating and compliling Arduino projects
• How to create Arduino shields and how to make use of them