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Arduino Goes ARM 144

Posted by Soulskill
from the gil-hamilton-gets-a-new-partner dept.
mikejuk writes "The whole world seems to be going in ARM's direction. The latest version of Windows 8 will run on ARM processors, Raspberry Pi is a $25 ARM based machine and now the open source Arduino platform has a new member — the ARM-based Arduino Due announced at the Maker Faire in New York. The Due makes use of Atmel's SAM3U ARM-based process, which supports 32-bit instructions and runs at 96Mhz. The Due will have 256KB of Flash, 50KB of SRAM, five SPI buses, two I2C interfaces, five serial ports, 16 12-bit analog inputs and more. This is much more powerful than the current Uno or Mega. However, it's not all gain — the 3.3V operating voltage and the different I/O ports are going to create some compatibility problems. Perhaps Intel should start to worry about the lower end of the processor world."
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Arduino Goes ARM

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  • Hooray for 3.3v (Score:4, Interesting)

    by Sleepy (4551) on Monday September 19, 2011 @05:29PM (#37449052) Homepage

    mikejuk's submission paragraph states: "However, it's not all gain — the 3.3V operating voltage and the different I/O ports are going to create some compatibility problems. "

    I respectfully disagree. Firstly, there are already a lot of 3.3v based Arduinos on the market. I own a JeeNode (see Jeelabs in EU, Modern Device in the USA). The JeeNode can run a 434MHz wireless radio transceiver and temperature sensor for MONTHS on a single 3.3v boosted AA battery. You could not do that with 5V.
    Adafruit has a tutorial on converting Arduino Unos over to 3.3v, from 5v. It's popular.

    Mostly all sensors these days are 3.3v.

    But most most actuators (like stepper motors) require MORE than 5V. Sure, there's some relays requiring a mere 5v.. and very few work on 3.3v... but most relays require 6V or higher. The usefulness of 5V is diminishing, so what you really want is just enough power to activate a transistor or relay.

    (Some Arduino compatible chips run great at 1.8v, and sensors do also... there will come a time someday where it may make sense to run at less than 3.3v)

    I see Arduino more as a collection of standards and open hardware. There are dozens of Arduino designs all of which vary slightly in terms of electrical and physical (pinout, etc) compatibility. But this too is a good thing... the Arduino platform is all about ADAPTABILITY.

The meat is rotten, but the booze is holding out. Computer translation of "The spirit is willing, but the flesh is weak."

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