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    • RS Stock No. 761-7324
    • Brand Arduino
    • Mfr. Part No. A000057
    • RoHS Status
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    ClassificationMicrocontroller Board
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    Arduino Leonardo Microcontroller Board

    The Arduino Leonardo is a development board based on the ATmega32u4 microcontroller. It contains everything needed to support the microcontroller. Simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.

    On-chip Flash memory 32KB of which 4KB used by bootloader
    On-chip SRAM 2.5KB
    On-chip EEPROM 1KB
    20 x GPIO pins (of which 7 can be used as PWM outputs and 12 as analogue inputs)
    16MHz crystal oscillator
    Micro USB connection, power jack, an ICSP header, and a reset button
    Standard Arduino format to accept Arduino Shields

    AVR Microcontrollers, Atmel

    Customer reviews Average customer rating  ( 2 Customer reviews )

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    For the prototyping of embedded, lowest-cost projects the Leonardo outperforms the competition in terms of input/output/special functions per £ pound. With both analogue and digital inputs and outputd, including PWM on several pins, sPI and I2C as well as USB and compatible with shield expansion boards the Leonardo has quickly become the new replacement for the UNO, haivng rather more to offer, with same size shield (PCB) and pin-out compatibility. Note: whist pin locations match, some pin functions have changed - so be sure to adapt your code to reflect the different pin-outs between the Leonardo and UNO, etc. Very fast to learn to program, no special tools needed and free IDE for Windows/MAC and Linux users to program in. very similar syntax and structure to C++, so it also makes a good starting point for those wishing to learn more and go onto PIC chips at a lter date, for example. Internet source code examples widely available with open-source licencing. A really good addition to the popular Aduino range. Has become both my entry-point board as well as my first choice for the more simple, low-speed, smaller code-size (up to 12kB) projects. May struggle to replicate speech, for example - unlike a DsPIC - but at £16 what do you expect ! Easy to learn to use from scratch, using one website- the Arduino playground ( and no hidden costs except a micro to USB cable for programming - unless you have a Kindle or equivalent charging cable laying around


    Reviewed by:

    Created on:
    Jan 18, 2013

    2 of 2 people found this review helpful.

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    Taking the plunge
    Great project, nice and compact - I was suprised how small it was. OK, I've been making custom (ten-off) PWM boards for controlling small motor speeds, but they are not the most advanced design, have limits and, frankly - could do with jazzing up. I chose a PIC first - but got bogged down with the programming. Then I looked at Arduino. The Leanardo has much more than I need, but I can change our potentiometer operated PWM circuit to a nicer, up to date touch-pad (up and down touch-pad pushbuttons). I can also add a digital display to show speed (in % or rpm - changing range with the same two-pad pushbuttons. I also intend to add battery power level, as I can measure power on one of the inputs, and display charge (V or % remaining) on the display. More important, I learned how to programme it in less than a week. OK I haven't got the display connected yet, but simulaitons work fine. An easy to learn powerful board


    Reviewed by:

    Created on:
    Nov 14, 2012

    1 of 1 people found this review helpful.

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