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Arduino Uno R3

Arduino UNO in Bangladesh The Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller.

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BreadBoard

Solderless Large BreadboardA breadboard (or protoboard) is usually a construction base for prototyping of electronics. The term "breadboard" is commonly used to refer to a solderless breadboard (plugboard). Because the solderless breadboard for electronics does not require soldering, it is reusable. This makes it easy to use for creating temporary...

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Arduino Mega 2560
  • Arduino Mega 2560
  • Arduino Mega 2560 (Made in Italy)

Arduino Mega 2560

Arduino Mega in Bangladesh

The Arduino Mega is a microcontroller board based on the ATmega2560 (datasheet). It has 54 digital input/output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller
.

BDT 850
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Average rating: 5/5 - Number of reviews: 8
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Description

Schematic & Reference Design

EAGLE files: arduino-mega-reference-design.zip

 

Schematic: arduino-mega-schematic.pdf

 

Summary

Microcontroller ATmega2560
Operating Voltage 5V
Input Voltage (recommended) 7-12V
Input Voltage (limits) 6-20V
Digital I/O Pins 54 (of which 15 provide PWM output)
Analog Input Pins 16
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin 50 mA
Flash Memory 128 KB of which 4 KB used by bootloader
SRAM 8 KB
EEPROM 4 KB
Clock Speed 16 MHz

 

Power

The Arduino Mega can be powered via the USB connection or with an external power supply. The power source is selected automatically.

 

External (non-USB) power can come either from an AC-to-DC adapter (wall-wart) or battery. The adapter can be connected by plugging a 2.1mm center-positive plug into the board's power jack. Leads from a battery can be inserted in the Gnd and Vin pin headers of the POWER connector.

 

The board can operate on an external supply of 6 to 20 volts. If supplied with less than 7V, however, the 5V pin may supply less than five volts and the board may be unstable. If using more than 12V, the voltage regulator may overheat and damage the board. The recommended range is 7 to 12 volts.

 

The power pins are as follows:

 

  • VIN. The input voltage to the Arduino board when it's using an external power source (as opposed to 5 volts from the USB connection or other regulated power source). You can supply voltage through this pin, or, if supplying voltage via the power jack, access it through this pin.

     

  • 5V. The regulated power supply used to power the microcontroller and other components on the board. This can come either from VIN via an on-board regulator, or be supplied by USB or another regulated 5V supply.

     

  • 3V3. A 3.3 volt supply generated by the on-board FTDI chip. Maximum current draw is 50 mA.

     

  • GND. Ground pins.

 

Memory

The ATmega1280 has 128 KB of flash memory for storing code (of which 4 KB is used for the bootloader), 8 KB of SRAM and 4 KB of EEPROM (which can be read and written with the EEPROM library).

 

Input and Output

Each of the 54 digital pins on the Mega can be used as an input or output, using pinMode()digitalWrite(), anddigitalRead() functions. They operate at 5 volts. Each pin can provide or receive a maximum of 40 mA and has an internal pull-up resistor (disconnected by default) of 20-50 kOhms. In addition, some pins have specialized functions:

 

  • Serial: 0 (RX) and 1 (TX); Serial 1: 19 (RX) and 18 (TX); Serial 2: 17 (RX) and 16 (TX); Serial 3: 15 (RX) and 14 (TX). Used to receive (RX) and transmit (TX) TTL serial data. Pins 0 and 1 are also connected to the corresponding pins of the FTDI USB-to-TTL Serial chip.

     

  • External Interrupts: 2 (interrupt 0), 3 (interrupt 1), 18 (interrupt 5), 19 (interrupt 4), 20 (interrupt 3), and 21 (interrupt 2). 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.

     

  • PWM: 2 to 13 and 44 to 46. Provide 8-bit PWM output with the analogWrite() function.

     

  • SPI: 50 (MISO), 51 (MOSI), 52 (SCK), 53 (SS). These pins support SPI communication, which, although provided by the underlying hardware, is not currently included in the Arduino language. The SPI pins are also broken out on the ICSP header, which is physically compatible with the Duemilanove and Diecimila.

     

  • LED: 13. There is a built-in LED connected to digital pin 13. When the pin is HIGH value, the LED is on, when the pin is LOW, it's off.

     

  • I2C: 20 (SDA) and 21 (SCL). Support I2C (TWI) communication using the Wire library (documentation on the Wiring website). Note that these pins are not in the same location as the I2C pins on the Duemilanove or Diecimila.

 

The Mega has 16 analog inputs, each of which provide 10 bits of resolution (i.e. 1024 different values). By default they measure from ground to 5 volts, though is it possible to change the upper end of their range using the AREF pin and analogReference() function.

 

There are a couple of other pins on the board:

 

  • AREF. Reference voltage for the analog inputs. Used with analogReference().

     

  • Reset. Bring this line LOW to reset the microcontroller. Typically used to add a reset button to shields which block the one on the board.
Product Details
27 Items

Click here to leave a review

Mega
rating
05/06/2019
Janaka
Satisfied
Good
rating
17/12/2018
Majadul M.
Working
প্রত্যয়ন পত্র
rating
11/12/2018
Majadul M.
এই মর্মে প্রত্যয়ন পত্র প্রদান করা যায় যে Arduino Mega 2560 যহা আমি roboticsbd.com হইতে ক্রয় করিয়াছিলাম।আমার জানা মত্তে তাঁহার কার্যক্রম ভাল । ইহা আমার জানামতে সত্য। আমি roboticsbd.com এর সার্বিক মঙ্গল কামনা করি।
Good
rating
13/07/2018
Monirul H.
Good
satisfied
rating
24/11/2017
Shahriar R.
Product is working fine. Delivery service is satisfactory.
Arduino Review
rating
31/10/2017
Samin S.
Good Quality
Arduino Mega 2560
rating
25/05/2017
Tariq S.
It's really good. It's very helpful for difference kind of project. And thanks to Robotics BD for give me the best quality.
Good
rating
17/06/2015
Nasir R.
I am a very new user. so i cant write much. but the product i got is very good strong and easily usable. thanks to Robotics BD.
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