Tags: leonardo, V3, ATmega328, CH340, soldered, Compatiable, Arduino, KS0173, ATmega32u4, , Ks0248

Keyestudio Leonardo R3 Board Ks0248 (Compatiable) + Usb cable

  • 39.00 AED
    • Ex Tax:39.00 AED
    • Brands Keyestudio
    • Product Code: Keyestudio
    • Availability: In Stock
    The keyestudio Leonardo is a microcontroller board based on the ATmega32u4  It is an easy-to-use open source hardware.It has 20 digital input/output pins (of which 7 can be used as PWM outputs), 12 analog inputs, a 16 MHz crystal oscillator, a micro USB connection, a power jack, an ICSP header,..

    The keyestudio Leonardo is a microcontroller board based on the ATmega32u4  It is an easy-to-use open source hardware.
    It has 20 digital input/output pins (of which 7 can be used as PWM outputs), 12 analog inputs, a 16 MHz crystal oscillator, a micro USB connection, a power jack, an ICSP header, and a reset button.
    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. Note that ICSP (In-Circuit Serial Programming) header can not only program the firmware to Atmega32u4, but also be used as SPI communication interface.
    The keyestudio Leonardo can be powered via the micro USB connection, or via an external power supply jack (DC 7-12V) or even with female headers Vin /GND (DC 7-12V).
    The Leonardo differs from other Arduino boards using separate USB-Serial chip in that the ATmega32u4 has built-in USB communication, eliminating the need for a secondary processor. This allows the Leonardo to appear to a connected computer as a mouse and keyboard.


    TECH SPECS

    MicrocontrollerAtmega32u4
    Operating Voltage5V
    Input Voltage (recommended)DC7-12V
    Digital I/O Pins20 (of which 7 provide PWM output)
    PWM Digital I/O Pins7
    Analog Input Pins12
    DC Current per I/O Pin40 mA
    DC Current for 3.3V Pin50 mA
    Flash Memory32 KB (Atmega32u4) of which 4 KB used by bootloader
    SRAM2.5 KB (ATmega32u4)
    EEPROM1 KB (Atmega32u4)
    Clock Speed16 MHz
    LED_BUILTIND13


    Details

    • PCB Dimensions: 71mm*54mm*15mm
    • Weight: 18.4g


    KS0248 Details.jpg


    Element and Interfaces

    Here is an explanation of what every element and interface of the board does:
    KS0248 pinout.jpg

    Specialized Functions of Some Pins


    Digital I/O pinsD0-D13 and A0-A5 (D18-D23); Note that if the digital pins are not enough, the ICSP pins can be used as digital pins. MISO (D14); SCK(D15); MOSI (D16).
    Analog InputsA0-A5, A6-A11 (on digital pins 4, 6, 8, 9, 10, and 12). That is, D4 (A6)、D6 (A7)、D8 (A8)、D9 (A9)、D10 (A10) and D12 (A11).

    Pins A0-A5 appear in the same locations as on the Uno; inputs A6-A11 are on digital i/o pins 4, 6, 8, 9, 10, and 12 respectively. Each analog input provide 10 bits of resolution (i.e. 1024 different values). By default the analog inputs measure from ground to 5 volts, though is it possible to change the upper end of their range using the AREF pin and thean alogReference() function.

    PWM (Pulse-Width Modulation)D3, D5, D6, D 9, D10, D11 and D13. Provide 8-bit PWM output with the analogWrite()function.
    External InterruptsD3 (interrupt 0); D2 (interrupt 1); D0 (interrupt 2), D1 (interrupt 3) and D7 (interrupt 4).

    These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value. See the attachInterrupt() function for details.

    Serial communicationD0 (RX) and D1 (TX).
    SPI communication
    On the ICSP header.

    These pins support SPI communication using the SPI library. Note: the SPI pins are not connected to any of the digital I/O pins as they are on the Uno. They are only available on the ICSP connector. This means that if you have a shield that uses SPI, but does NOT have a 6-pin ICSP connector that connects to the Leonardo's 6-pin ICSP header, the shield will not work.

    AREFReference voltage for the analog inputs.

    Used with  analogReference() Sometimes used to set the external reference voltage (0-5 volts) as the upper end of analog input pins.

    IOREFThe voltage at which the i/o pins of the board are operating (i.e. VCC for the board).

    This is 5V on the Leonardo. Used to configure the operating voltage of microcontroller.


    Tips

    • Automatic (Software) Reset:

    Rather then requiring a physical press of the reset button before an upload, the Arduino Nano is designed in a way that allows it to be reset by software running on a connected computer.

    • USB Overcurrent Protection:

    The Leonardo has a resettable polyfuse that protects your computer's USB ports from shorts and overcurrent. Although most computers provide their own internal protection, the fuse provides an extra layer of protection. If more than 500 mA is applied to the USB port, the fuse will automatically break the connection until the short or overload is removed.


    Detailed Use with ARDUINO Software as follows

    Step1| Download the Arduino IDE

    When you get the board, first you should install the Arduino software and driver.
    We usually use the Windows software Arduino 1.5.6 version. You can download it from the link below:
    https://www.arduino.cc/en/Main/OldSoftwareReleases#1.5.x
    Or you can browse the ARDUINO website to download the latest version from this link, https://www.arduino.cc, pop up the following interface.
    KS0313-1.png

    Then click the SOFTWARE on the browse bar, you will have two options ONLINE TOOLS and DOWNLOADS.
    KS0313-2.png

    Click DOWNLOADS, it will appear the latest software version of ARDUINO 1.8.5 shown as below.
    KS0313-3.png

    In this software page, on the right side you can see the version of development software for different operating systems. ARDUINO has a powerful compatibility. You should download the software that is compatible with the operating system of your computer.
    We will take WINDOWS system as an example here. There are also two options under Windows system, one is installed version, the other is non-installed version. For simple installed version, first click Windows Installer, you will get the following page.

    KS0313-4.png

    KS0313-5.png

    This way you just need to click JUST DOWNLOAD, then click the downloaded file to install it.
    For non-installed version, first click Windows ZIP file, you will also get the pop-up interface as the above figure.
    Click JUST DOWNLOAD, and when the ZIP file is downloaded well to your computer, you can directly unzip the file and click the icon of ARDUINO software to start it.


    Installing Arduino (Windows)

    Install Arduino with the exe. Installation package downloaded well.
    thumb

    Click“I Agree”to see the following interface.
    thumb

    Click “Next”. Pop up the interface below.
    thumb

    You can press Browse… to choose an installation path or directly type in the directory you want.
    Then click “Install” to initiate installation.
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    Wait for the installing process, if appear the interface of Window Security, just continue to click Install to finish the installation.

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