![]() Input devices: Ntc thermistor, sensors (like ldr, irled and humidity) and others It can be used by pinMode() for pin direction, analogRead() to read pin status and get digital value for analog signal, care must be taken for internal or external reference voltage selection and Aref pin. Input read signal on Arduino mega boardĪnalog pins: From 0-15(analog) can be used as analog input pin for adc, if not used than it work as normal digital pin.Output low signal on Arduino mega board.Input devices: digital thermistor, push button, ultrasonic sensor, joystick and others Output devices : Relay, LED, buzzer, LCD and others. Digital pins (70): Digital pins (0-53) + Analog (0-15) = Total Digital I/O pins.ĭigital Pins: From 0-53(digital) and 0-15(analog) can be use as input or output for digital transducer and output devices by pinMode() for pin direction, digtalWrite() to write pin and digitalRead() to read pin status. XTAL1,XTAL2: Crystal (16Mhz) is connected to supply clock for controller with 2 bypass capacitor to ground.ĪREF: This pin is used, when we use Adc for analog to digital conversion with external reference voltage for conversion and don’t want to use internal 1.1V or 5v reference. Arduino Mega has inbuilt reset circuit with push button to reset system and this pin can be used by other devices to reset controller. RESET: (Reset input) A low level on this pin for longer than the 4 clock cycle will generate a reset. Arduino Mega Pinout Arduino Mega Pinout Power pins : Arduino Megaįor External hardware device power supplyįor External low voltage hardware device power supplyĪrduino Mega Pin Diagram Arduino Mega Pin Configuration Controller Pins: USB (Programming with ATmega 8), ICSP (programming), SPI, I2C and USARTĪrduino Mega – Advanced Features Arduino MegaĪrduino Mega 2560 is also packed with additional features like Analog Comparator, External Interrupt & Software Interrupt, Power Saving Mode, Inbuilt Temperature Sensor, RTC and more. Arduino Mega 2560 SpecificationsĪrduino Mega – Basic Features Arduino Mega Due to the many numbers of pins, it is not usually used for common projects but you can find them in much more complex ones like Radon detectors, 3D printers, temperature sensing, IOT applications, real-time data monitoring applications etc. The Arduino Mega 2560 is a replacement of the old Arduino Mega, and so in general reference, it will be called without the ‘2560’ extension. ![]() It supports ICSP as well as USB microcontroller programming with PC. It is also compatible with the different type of boards like high-level signal (5V) or low-level signal (3.3V) with I/O ref pin.īrownout and watchdog help to make the system more reliable and robust. With large FLASH memory and SRAM, this board can handle large system program with ease. Other features include JTAG support for programming, debugging and troubleshooting. It has more than 5 pins for Vcc and Gnd to connect other devices to Arduino Mega. 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. 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. ![]() Read this for more information.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. If you are lucky enough to have a Seeeduino Mega, you can make the Video Experimenter work with it by connecting a few jumper wires. The ATmega1280 and ATmega2560 have four pins that have this feature, but none of them are connected to Arduino headers! Evidentally, the designers of the Arduino Mega did not think anyone would be interested in using the input capture feature of the ATmega microcontrollers. Evidently, the designers of the Arduino Mega did not think anyone would be interested in comparing analog voltages.Īlso, overlaying text and graphics on a video image requires the use of an input capture pin so that we can know precisely when the beginning of a video line begins. The analog comparator pin AIN0 on the ATmega1280/ATmega2560 is not connected to any Arduino Mega pin! This is pin 4 on the ATmega1280/ATmega2560 and as you can see in the schematic, it is not connected. These features are connected to different pins on the Arduino Mega or not connected at all. The Video Experimenter depends on ATmega features like input capture, external interrupt detection, and the analog comparator. Many of the pin assignments on the Arduino Mega are different than the pin assignments on the Arduino Uno/Duemilanove/Diecimila.
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