When I first got my Due in the mail I searched the web for a simple overview to help me better understand what new features Arduino is bringing to the table with the new development board. After finding next to nothing I decided to write my own general overview post in hopes that it would help out someone in a situation similar to mine. The Arduino Due is the first ARM-based development board from Arduino and features a powerful 32bit CortexM3 microcontroller. The board is fully programmable through the familiar Arduino IDE. The processing power is significantly increased over a traditional 8bit Arduino board and the coding language was kept very similar to what we are familiar with, making the transition to the new board very easy for most.
The Arduino Due shares a similar form factor to that of an Arduino Mega with the due having a few more pins, and two micro-USB ports instead of one. The Due sports 54 digital I/O pins of which 12 are PWM enabled, 12 Analog inputs, 4 UART’s, a USB-OTG capable connection, 2 DACs, 2 TWI, a JTAG header and SPI connector. An 84MHz clock fuels the CortexM3 engine and the boards operating voltage is 3.3v unlike the previous Uno, Leonardo, and Mega which all run on 5v. The Due is able to handle input voltages from 6-20V, but the recommended input voltage is between 7 and 12 volts. The total DC Current output on all I/O pins is 130mA while the current for the 3.3v and 5v pins is limited to 800mA. Because of the Atmel SAM3X8E’s 3.3v limit, existing Arduino shields that utilize 5v won’t work properly on the Due. Shields that utilize Arduino’s official R3 layout will work out of the box however.
It is important to note that using a shield that presents an input voltage greater than 3.3v to any of the I/O pins will damage that pin and could possibly (most likely) kill your Due all together. If you are unsure about a shield, I recommend that you fully read the shields data sheet, website documentation or contact the shields manufacturer before attempting to use it on your Due. Users have 512KB of flash memory to store their code in as well as two banks of SRAM totaling 96KB (Split into 64KB and 32KB). Compiling code for the Due is handled in the latest version of the Arduino IDE : Version 1.5, which will replace Arduino 1.0.1 after the testing phase completes.
Adafruit has had paid day off for voting for our team for years, if you need help getting that going for your organization, let us know – we can share how and why we did this as well as the good results. Here are some resources for voting by mail, voting in person, and some NY resources for our NY based teams as well. If there are additional resources to add, please let us know – adafruit.com/vote
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.