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Arduino

Difference between Programming and Native Ports

difference between programming and native ports due and zero

When you hear the name “Arduino,” does a picture of the Uno come to mind? While the most popular, this 8-bit based board isn’t the only Arduino available today. There are some other boards available like the Due and recently introduced Zero, which are far more advanced than the humble Uno.

These are 32-bit microcontroller boards that have a very different architecture compared to the relatively straightforward Uno. In fact, one of the most striking differences is that the Due and Zero have two USB ports.

What is the difference between the Programming and Native ports on these more powerful Arduino boards?

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Arduino

Sawtooth waveform with the Arduino Due’s Built-In DAC

Users of the ATmega328 based Arduino boards will recognize that the analogWrite() function doesn’t actually do anything analog.  It just sets the duty cycle of a pulse width modulated (PWM) signal.  The (new) Arduino Due board, which I have had limited time to play with, actually sports two Analog DAC channels.
Sawtooth Waveform
Using a very simple for() loop, it is possible to generate a sawtooth waveform using these channels.

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First impressions of the Arduino Due

Arduino Due

I’ve been working with Arduino boards for a number of years, as shown by the dates on some of my older blog posts.  In that time I’ve only used boards based on the ATmega8 (like the Duemilanove or Uno).  The Due is the first Arduino board I have used in what I would call the Mega form factor.

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Arduino

Arduino Comparison Chart

When getting started with the Arduino, the shear number of board options can be intimidating. While the variety is a great option, it can be daunting to a new user. Many people are afraid of selecting the wrong board, or their budget doesn’t allow for buying multiple boards. Just looking at the “official” boards listed on the Arduino.cc site, there are 14+ different Arduino board types to consider. Then there are a variety of 3rd-party boards with their own uniqueness.

This publicly editable Arduino Comparison Table is a one-stop place to compare key features of Arduino boards, such as Input Voltage, I/O Pins Available, and Connectivity options. Feel free to update information, make changes, or add new boards.

Visit the Google Docs Spreadsheet to use filters and sort by the various parameters.

[View Full Table]

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