For more information on the Uno, check out this article. The Arduino Mega 2560 is a fantastic option for use in prototyping with ease, especially for 3D printers and robotics, where the Uno just doesn’t hold up. The Mega’s shield selection includes any shield compatible with the Arduino Duemilanove and Diecimila. Using a shield gives your Mega board display options, Wi-Fi connectivity or even video game emulation software with relative ease. These preassembled PCBs interface directly into the Mega’s headers and give the board incredible capabilities in a condensed package. With it, anyone can add to or use the massive selection of codes to provide easy access to a world of programming possibilities.Īnother prominent feature of all Arduino boards, including the Mega, are the Arduino shields. The open-source coding terminal has a variety of features that make it accessible to both novices and programming gurus alike, most notably the IDE’s associated library of projects and other syntaxes created by the massive community of Arduino users. Like the Uno, the Mega operates in the Arduino Integrated Development Environment (IDE). Arduino Mega 2560 Pinout DiagramĪs far as other hardware on the Mega goes, it also touts four serial ports for general attachments, a USB connection (with a dedicated ATmega16U2 processor for interfacing with your computer), a reset button and a power supply port. See the graphic below for a (dare I say) mega-map of the Mega’s pins. Because of its brawnier processor, the Mega has 54 digital I/O pins (15 of which can provide PWM output) and 16 analog pins, which is almost four times that of its little brother, the Uno. Thanks to the ATmega2560 (and its associated crystal oscillator), the Arduino Mega sports 16 MHz clocking speed, as well as 256 KB of flash, 8 KB of SRAM and 4 KB of EEPROM. Usually used to add a reset button for shields that block the one on the board.As stated before, the brain behind the Arduino Mega is the ATmega2560. Used with analogReference ().īring this line to LOW to reset the microcontroller. However, it is possible to change the upper end of their range using the AREF pin and the analogReference () function. By default, they measure ground to 5 volts. The Mega2560 has 16 analog inputs, each of which provides 10 bits of resolution (i.e. Note that these pins are not in the same location as the TWI pins on the Duemilanove or Diecimila. Support for TWI communication using the wire library. When the pin is HIGH the LED is on, when the pin is LOW it is off.Ģ0 (SDA) and 21 (SCL). there is a built-in LED connected to digital pin 13. The SPI pins are also broken out in the ICSP header, which is physically compatible with Uno, Duemilanove, and Diecimila.ġ3. These pins support SPI communication using the SPI library. Provide 8-bit PWM output with the analogWrite () function.ĥ0 (MISO), 51 (MOSI), 52 (SCK), 53 (SS). Check Details Alf 3d printer: arduino mega 2560 pinout diagram, photo and 3d models. For more information refer to the function attachInterrupt ()Ģ to 13 and 44 to 46. These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value. Pins 0 and 1 are also connected to the corresponding pins of the ATmega16U2 serial USB-to-TTL chip.Ģ (interrupt 0), 3 (interrupt 1), 18 (interrupt 5), 19 (interrupt 4), 20 (interrupt 3), and 21 (interrupt 2). As far as other hardware on the Mega goes, it also touts four serial ports for general attachments, a USB connection (with a dedicated ATmega16U2 processor for interfacing with your computer), a reset button and a power supply port. Used to receive (RX) and transmit (TX) TTL serial data. In addition, some pins have special functions: Each pin can provide or receive a maximum of 40 mA and has an internal pullup resistor (disconnected by default) of 20-50 kOhms. Inputs and outputs of the Arduino MegaĮach of the 54 digital pins on the Arduino 2560 Mega can be used as an input or output, using the pinMode (), digitalWrite () and digitalRead () functions. When you buy an Arduino Mega, the question of pinout will surely arise in the course of your electronics project.
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