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Arduino UNO Simple Pack

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Deskripsi

Board ini merupakan board UNO terbaru. Selain memiliki fitur-fitur pada versi sebelumnya, UNO R3 kini menggunakan ATmega16U2 untuk converter serialnya. Sebagaimana kita ketahui bahwa versi sebelumnya menggunakan ATMega8U2, dan pada generasi sebelumnya lagi menggunakan FTDI. Penggunaan ATmega16U2 ini membuat kecepatan transfer menjadi lebih cepat, dan tentu memory yang lebih banyak. Tidak dibutuhkan driver tambahan untuk Linux maupun Mac (namun bagi pengguna Windows akan membutuhkan inf terupdate). 

 



GARANSI 1 TAHUN

 

Spesifikasi

Adapun data teknis board Arduino UNO R3 adalah sebagai berikut :

  • Mikrokontroler : ATMEGA328
  • Tegangan Operasi : 5V
  • Tegangan Input (recommended) : 7 - 12 V
  • Tegangan Input (limit) : 6-20 V
  • Pin digital I/O : 14 (6 diantaranya pin PWM)
  • Pin Analog input : 6
  • Arus DC per pin I/O : 40 mA
  • Arus DC untuk pin 3.3 V : 50 mA
  • Flash Memory : 32 KB dengan 0.5KB digunakan untuk bootloader
  • SRAM : 2 KB
  • EEPROM : 1 KB
  • Kecepatan Pewaktuan : 16 Mhz

 

 

You can power the Arduino board via the USB connector or via the DC power jack. The power jack is 2.1mm center powered.

You can use between 6V and 20V DC to power the board. It is recommended that you should not go below 7V to allow for the voltage drop across the power regulator. If you go too low then the regulator output might drop below 5V and this can cause issues with the boards operation.

It is also recommended that you do not go above 12V. The power regulator may over heat and cause damage to the board.

 

The pins are used as follows:

  • 5V: This is a regulated output from the on board voltage regulator. This power will come from either the USB or DC input jack. This is fed into the on board 5V voltage regulator. The output from the regulator is connected to this pin. You use this pin to provide 5V to power components connected to the Arduino board. The maximum current draw is approx 400mA on usb and higher if using the DC power jack.
  • 3.3V: This is a regulated output from the on board voltage regulator. The output from the 3.3V regulator is connected to this pin. You use this pin to provide 3.3V to power components connected to the Arduino board. The maximum current draw is 50mA
  • You can power the board by connecting a regulated 5V source to the 5V pin or 3.3V to the 3.3V Pin. The power will go directly into the ATMega328 micro controller. The on board power regulators are bypassed. If something goes wrong here then you could very easily damage the ATMega328 chip. Arduino advise against powering the board this way.
  • GND: Board ground as fed from the ground pins on the DC input jack and the USB connector. Use this ground for components connected to the Arduino board.
  • VIN: This pin is connected to the input side of the on board voltage regulators. Whatever input DC is supplied to the board by the DC input jack will also appear on the VIN pin. You could also connect power to the board using this pin instead of the USB or DC input jack. Because it is connected to the input side of the voltage regulators the regulated 5V and 3.3V Dc will be supplied to the board.
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There are 16 digital pins on the Arduino board. They can be used as inputs or outputs. They operate at 5V and have a maximum current draw of 40mA. They have an internal pull up resistor that is disabled by default. The pullup resistors are betwen 2 - 50kOhms and can be enabled via software.

We can control the digital I/O pins using the pinmode(), digitalWrite() and digitalRead functions.

Some of the digital I/O pins have additional functions:

  • Serial: Pin 0 (RX) and 1 (TX). These pins are used to transmit and receive serial TTL (5V) data. These pins are also connected to the Atmega16u2 USB to Serial TTL chip on the Arduino board.
  • PWM: Pins 3,5,6,9,10 and 11. The pins can provide a PWM (Pulse Width Modulated) 8 bit output. We use the analogWrite() function with a value between and 0 and 255 to control the duty cycle of the output.
  • SPI: Pin 10 (SS), 11 (MOSI), 13 (SCK) are used to provide SPI (Serial Peripheral Interface) communications using the SPI library
  • External Interrupts: Pins 2 and 3 can be configured to trigger a interrupt on the signal going low or on a rising or falling edge. We use the attachInterrupt() function to enable interrupts.
  • LED: There is a LED connected to Pin 13. When the output on pin 13 is high the LED will be turned on. The LED will be turned off when the output is low.

The Arduino Uno has 6 analog inputs that are labled A0 through to A5. Each of these Analog pins have 10 bits of resolution which translates from 0 to 1024 different values. By default they measure from ground to 5 volts. It is possible to extend the range using the AREF pin and the analogReference() function. SOme of these pins have additional functionality.

  • TWI: A4 or SDA pin and A5 or SCL pin. These pins are used to support TWI communications using the Wire library.
  • AREF: Used to provide a reference voltage for the analog inputs. Used with analogReference().
  • RESET: By bringing this line LOW it will reset the ATMega328 micro controller. Can be wired to shields to provide a reset button when the reset button on the Arduino Uno is blocked by the shield.

Using Analog Pins as Digital Pins

We can configure the Analog I/O pins to function the same as Digital pins. The Analog to Digital pin mappings are as follow:

  • A0 => Digital Pin 14
  • A1 => Digital Pin 15
  • A2 => Digital Pin 16
  • A3 => Digital Pin 17
  • A4 => Digital Pin 18
  • A5 => Digital Pin 19<

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