What is the Arduino Mega?

The Arduino Mega is a microcontroller board based on the ATmega1280 ( datasheet ). It has 54 digital input/output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button.

What is the maximum current draw for the Arduino Mega 2560?

However, on the Arduino Mega 2560, everything is powered by the single VCC supply pin on the Atmega16U2 (when powered via USB), this pin also has the maximum rating of 200mA, but there is only one of them. This leads me to conclude that the maximum current draw for the Arduino must only be 200 mA.

What is the maximum current an Arduino can support?

So if current comes from the USB port, the Arduino is limited to 500mA. If current comes from the barrel jack, the Arduino is limited to 1A. If current is supplied to the board via the 5V power header, you bypass the reverse protection diode and the Arduino is limited to what the pin will support before it melts.

What shields are compatible with the Arduino Mega 2560?

The Mega 2560 board is compatible with most shields designed for the Uno and the former boards Duemilanove or Diecimila. The Mega 2560 is an update to the Arduino Mega, which it replaces.

What is Arduino Mega 2560?

Arduino Mega 2560 is a Microcontroller board based on Atmega2560. 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).

How to connect Arduino Mega to Arduino Uno (Adafruit 328)?

Connect the ground pin on the Mega to the ground pin on the Arduino UNO (Adafruit 328). Connect Arduino UNO to a Stable/Reliable power source. Connect Arduino Mega to the Computer from the USB cable.

What are the I2C bus and interrupts in Arduino Mega 2560?

Problem with I2C bus and interrupts in ARDUINO MEGA 2560. The pins 20 and 21 which are input hardware interrupts to Int2 and Int3 pins, also is used for the I2C interface (SDA and SCL signals respectively).