#Arduino mega 2560 pin diagram for mac os x#
#Arduino mega 2560 pin diagram serial#
#Arduino mega 2560 pin diagram code#

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) receive and transmit TTL serial data. Some additional pins have specialized functions. The measure is from ground to 5 volts by default but can reach a higher upper end using the AREF pin and the function analogReference(). The 6 analog inputs, labeled A0 to A5, provide 10 bits of resolution each. The current should not exceed 40mA to avoid permanent damage to the microcontroller. Each pin has a disconnected-by-default internal pull-up resistor measuring 20-50k ohms. Each operates at 5 volts, providing or receiving 20mA for optimum operating conditions. Mega’s 54 digital pins work as input or output, using functions such as pinMode(), digitalWrite(), and digitalRead(). This extra layer of protection saves the device from shorts and overcurrent. The GND pin stands for the ground pin, whereas the IOREF pin sets the operating voltage reference of the microcontroller.įor protection, Mega 2560 has a resettable polyfuse that trips when a 500mA current passes the USB port. The 3.3V pin on the other hand regulates a 3.3-volt output at a maximum current of 50mA. The 5V pin regulates a 5-volt output on the board from either the DC power jack (7 - 12V), the USB connector (5V), or the VIN pin (7-12V). Although the recommended range sits at 7 to 12 volts.Īmong the power pins, the Vin pin supplies voltage from an external power source. The board’s power jack requires a 2.1mm center-positive plug that can handle 6-20 volts of external supply. The automatic selection of power to the Arduino board can come from a USB connection or an external power supply (AC-to-DC adapter or battery). An ISP header connected with an external programmer can also overwrite the DFU bootloader.

#Arduino mega 2560 pin diagram for mac os x#

For loading new firmware, Windows users can use Atmel's FLIP software and DFU programmer for Mac OS X and Linux.

The Arduino repository holds the ATmega16U2, which can be loaded with a DFU bootloader activated by a resistor that pulls the 8U2/16U2 HWB line to the ground. This bootloader can be bypassed via the ICSP header using the Arduino ISP.

#Arduino mega 2560 pin diagram code#

Preprogrammed with a bootloader, the ATmega2560 allows the uploading of a new code without the need for an external hardware programmer.

Mega 2560 board is programmable with Arduino’s IDE, CLI, and Web Editor. It has a flash memory of 256KB, with the bootloader occupying 8KB, 8KB SRAM, and 4KB of EEPROM, readable and writable with the EEPROM library. The board also features ATmega16U2 USB serial processor as interface between the USB input signals and the main processor. It features a numerous of input and output lines for interfacing many external devices. The main processor ATmega2560 chip operates at 16MHz, which is easily replaceable since it is not soldered. Mega 2560 is also compatible with most Uno shield designs and older boards, Diecimila or Duemilanove Arduino. Compared to the even multiple of the 100 mil spacing of most pins, digital pins 7 and 8 are 160 mils (0.16’’) apart. The board has three screw holes for attaching it to surfaces or cases. The PCB of Mega 2560 spans 4 x 2.1 inches, with the power jack and USB connector a little over the said measurement. The Mega 2560 board contains all the necessary things to support the microcontroller when connected to a power source. Arduino Mega 2560 likewise includes a USB connection, an ICSP header, a power jack, a reset button, and a 16MHz crystal oscillator. It has 54 digital IO pins, 15 of which can be set as PWM outputs, 16 analog inputs, and 4 UARTs hardware serial ports-a much larger set of IOs compared to a traditional Uno board, given their form factors. In addition to flexibility, the amount of contributing developers makes it easy to find and fix flaws.īuilt on ATmega2560, Arduino Mega 2560 suits applications, and projects requiring a huge number of IO pins for high processing power. Numerous developers from all around the world supply these license-free codes that are not only available but also flexible enough, allowing users to modify them for the desired function. But microcontroller hardware and software now see a better route-thanks to open-source software. The production of specialized microcontrollers for unique devices is time and money inefficient. It is integrated into a system and manages a single function by deciphering data received and taking appropriate actions. Despite being tiny computers built into a single chip, they have programmable input/output peripherals, memory, and a processing core. Microcontrollers have the power to control a wide variety of machines, including life-support systems, spacecraft, aircraft, and even mobile phones.