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  1. Parts
  2. /Boards
  3. /Arduino boards

Arduino Mega 2560 Rev3

OverviewPinoutAlternatesRelated groups
Arduino Mega 2560 Rev3 — Arduino — 191

ATmega2560-based board with 54 digital I/O pins (15 PWM), 16 analog inputs, 4 hardware UARTs, 16 MHz, and USB-B. A large I/O count makes it suitable for projects that exhaust Uno pins. Discontinued — the Adafruit Grand Central M4 is a current alternative.

Offers

  • Adafruit$39.95
  • DFRobot$49.90
  • Pimoroni
  • Seeed Studio

Pinout

  • VIN

    External input supply rail for the Arduino Mega 2560 board, from the official Arduino Mega 2560 documentation/pinout.

    Type · powerVoltage · board external input rail, see official Arduino Mega 2560 documentation
  • 5V

    Regulated 5V board rail exposed on the Mega 2560 headers.

    Type · powerVoltage · 5V
  • 3V3

    3.3V board rail exposed on the Mega 2560 headers.

    Type · powerVoltage · 3.3V
  • GND

    Ground reference pins exposed on the Mega 2560 headers.

    Type · groundVoltage · 0V
  • RESET

    Reset input exposed on the board headers.

    Type · control
  • D0-D53

Arduino

75 other options

About 75 boards across every Arduino generation: 5V Uno/Mega/GIGA, 3.3V MKR and Portenta, plus DFRduino and Bluno compatibles. Confirm the voltage rail before stacking any shield.

View all 75
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ESP32

Wi-Fi and Bluetooth on a single chip, in every shape from Espressif DevKitC to Adafruit Feathers with STEMMA QT, DFRobot FireBeetles tuned for battery life, and Seeed XIAOs under a thumbnail.

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Add-ons

About 270 add-ons across Pi HATs, Arduino shields, and FeatherWings. The same function — motor control, PoE, display — usually ships once per host connector family. Get the host board right first.

Boards · HATs, Shields & add-ons · 272 parts

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Other MCUs

Specialists: Teensy for high-clock audio and USB, Adafruit SAMD boards running CircuitPython or the Arduino IDE, proper STM32 eval kits, and the micro:bit classroom ecosystem. Schematik builds target ESP32, Arduino Uno, and Pico; come here when you have a specific reason to.

Boards · Other MCU boards · 226 parts

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Pi Pico

The Raspberry Pi MCU line — Pico, Pico 2, and third-party boards on the same silicon — plus a deep bench of Pico-pinout displays, loggers, and radio modules that do nothing without a Pico plugged in.

Boards · Pico & RP2040 boards · 44 parts

Parts tray full · 5 max · remove a part to add another

Offers

  • Adafruit$39.95
  • DFRobot$49.90
  • Pimoroni
  • Seeed Studio

Digital I/O header pins for the Arduino Mega 2560 board; the official pinout groups these pins and marks their alternate functions.

Type · gpioVoltage · 5V logic board family
  • A0-A15

    Analogue input header pins for the Arduino Mega 2560 board.

    Type · analogVoltage · analogue input range follows board reference, see Arduino documentation
  • SDA / SCL

    I2C/TWI interface pins exposed on the Mega 2560 headers.

    Type · i2cVoltage · 5V logic board family
  • MOSI / MISO / SCK

    SPI signals exposed via the ICSP header and alternate digital pins on the Mega 2560.

    Type · spiVoltage · 5V logic board family
  • TX0/RX0, TX1/RX1, TX2/RX2, TX3/RX3

    Hardware serial UART transmit/receive pairs exposed on the Mega 2560 headers.

    Type · uartVoltage · 5V logic board family
  • AREF

    Analogue reference pin exposed on the board header.

    Type · reference
  • PinPositionTypeFunctionVoltage
    VINpowerExternal input supply rail for the Arduino Mega 2560 board, from the official Arduino Mega 2560 documentation/pinout.board external input rail, see official Arduino Mega 2560 documentation
    5VpowerRegulated 5V board rail exposed on the Mega 2560 headers.5V
    3V3power3.3V board rail exposed on the Mega 2560 headers.3.3V
    GNDgroundGround reference pins exposed on the Mega 2560 headers.0V
    RESETcontrolReset input exposed on the board headers.
    D0-D53gpioDigital I/O header pins for the Arduino Mega 2560 board; the official pinout groups these pins and marks their alternate functions.5V logic board family
    A0-A15analogAnalogue input header pins for the Arduino Mega 2560 board.analogue input range follows board reference, see Arduino documentation
    SDA / SCLi2cI2C/TWI interface pins exposed on the Mega 2560 headers.5V logic board family
    MOSI / MISO / SCKspiSPI signals exposed via the ICSP header and alternate digital pins on the Mega 2560.5V logic board family
    TX0/RX0, TX1/RX1, TX2/RX2, TX3/RX3uartHardware serial UART transmit/receive pairs exposed on the Mega 2560 headers.5V logic board family
    AREFreferenceAnalogue reference pin exposed on the board header.

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