Arduino Mega

First of all, Why Arduino Mega 2560 ?

When cheaper boards are available, why go with Arduino Mega? The main reason behind this is the additional features that are inbuilt with this board. First feature is the large I/O system design with inbuilt 16 analog transducers and 54 digital transducers that supports with USART and other communication modes. Secondly, it has inbuilt RTC and other features like analog comparator, advanced timer, interrupt for controller wakeup mechanism to save more power and fast speed with 16 MHz crystal clock to get 16 MIBS. It has more than 5 pins for Vcc and Gnd to connect other devices to Arduino Mega.

  • Arduino Mega2560 is a Microcontroller board based on Atmega2560. It comes with more memory space and I/O pins as compared to other boards available in the market.
  • There are 54 digital I/O pins and 16 analog pins incorporated on the board that make this device unique and stand out from others.
  • Out of 54 digital I/O, 15 are used for PWM (pulse width modulation).
  • A crystal oscillator of 16MHz frequency is added on the board.
  • This board comes with USB cable port that is used to connect and transfer code from computer to the board.
  • DC power jack is coupled with the board that is used to power the board. Some version of Arduino board lacks this feature like Arduino Pro Mini doesn’t come with DC power jack.
  • ICSP header is a remarkable addition to Arduino Mega which is used for programming the Arduino and uploading the code from the computer.

 

Pin Description:

                                  PIN                                                                                                      Functions

1

D0 – D53

54 Digital Input / Output Pins.

2

A0 – A15

16 Analog Input / Output Pins.

3

D2 – D13

12 Pulse Width Modulation (PWM) Pins.

4

Pin # 0 (RX) , Pin # 1 (TX)

Pin # 19 (RX1) , Pin # 18 (TX1)

Pin # 17 (RX2) , Pin # 16 (TX2)

Pin # 15 (RX3) , Pin # 14 (TX3)

 4 Serial Communication Ports (8 Pins).

5

Pin # 50 ( MISO )

Pin # 51 ( MOSI )

Pin # 52 ( SCK )

Pin # 53 ( SS )

SPI Communication Pins.

6

Pin # 20 ( SDA ), Pin # 21 ( SCL )

I2C Communication Pins.

7

Pin # 13

Built-In LED for Testing.

 

Basic Features of Arduino Mega

  • Microcontroller: ATmega2560
  • Operating Voltage: 5V
  • Input Voltage (recommended):  7-12V
  • Input Voltage (limit) : 6-20V
  • Digital I/O Pins: 54 (of which 15 provide PWM output)
  • Analog Input Pins: 16
  • DC Current per I/O Pin: 20 mA
  • DC Current for 3.3V Pin: 50 mA+
  • Flash Memory: 256 KB of which 8 KB used by bootloader
  • SRAM: 8 KB
  • EEPROM: 4 KB
  • Clock Speed: 16 MHz
  • LED_BUILTIN: 13
  • Length: 101.52 mm
  • Width : 53.3 mm
  • Weight: 37 g

 

  Application:

Arduino Mega 2560 is an ideal choice for the projects requiring more memory space to used with more number of number pins on the board. Following are the main applications of the Arduino mega boards.

  • Developing 3D printer
  • Controlling and handling more than one motors
  • Interfacing of number of sensors
  • Sensing and detecting temperature
  • Water level detection projects
  • Home automation and security systems
  • Embedded Systems
  • IoT applications
  • Parallel programming and Multitasking

 Reference:

http://www.gravitech.us/arna30wiatp.html

https://www.theengineeringprojects.com/2018/06/introduction-to-arduino-nano.html

https://www.rs-online.com/designspark/basics-of-arduino-nano

https://store.arduino.cc/usa/arduino-nano

 

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