(hardware serial ports), a USB connection, a power jack, an ICSP header, and a reset. The Mega 2560 is an upgrade from theArduino Mega, which it replaces. The board contains 54 digital input/output pins, 16 analog inputs, 4 UARTs. The Mega 2560 board is compatible with most shields designed for the Uno and older Duemilanove or Diecimila boards. It contains everything needed to support the microcontroller simply connect it to a computer with a USB cable or power it with an AC-DC adapter or battery to get started. It has 54 digital input/output pins (15 of which can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power socket, an ICSP connector, and a reset button. Itâs an ICSP-connector for internal microcontroller programming ATmega16U2. If Iâve confused you anywhere, post your code and tell us which pins youâve used for each device, weâll show you where to edit your software so it matches what youâve done in hardware.TheArduino Mega 2560 is a microcontroller board based on the ATmega2560. Again, the pin you use must appear in the object constructor in your software. The second device needs its own CS pin and you can use any digital pin you desire. Arduino Mega (also Uno) has a separate block of pin-holes called ICSP. The board comes with 4 serial ports, one SPI, and one I2C communication protocol. All you need is 6 hookup wires to connect your testing board (the known good one with the sketch on it) to the ICSP header on the Mega. There are 15 analog pins incorporated on the board. a Uno) to detect the signature on that chip, as per my sketch on Sketch to detect Atmega chip types. There are total 54 digital I/O pins available on the board out of which 15 pins are used as PWM pins. It comes with everything required to support the microcontroller. The Arduino Mega 2560 Rev3 is a microcontroller board that is based on the ATmega2560 microcontroller. The CS on pin 53 can only be connected to one device, it does not matter which one but it needs to match the software pin declaration. More features include a power jack, a USB connection, an ICSP header, and a reset button. You can use those pins in addition to those on 50, 51 and 52 as they are connected in parallel on the pcb. The six pin connector to the right of the atMeag2560 processor are the duplicate pins Nick is referring to. Please note that I2C is not located on the same pins on the Mega 2560 board (20 and 21). Those are the SPI pins for the dedicated USB to serial converter atMega processor. ICSP header on both the Mega 2560 and Duemilanove / Diecimila boards. I know there is a separate 6 pin by the reset button is also for MOSI They are just a common alternative set of pins. Introduction to Arduino Mega 2560 board, pinout, applications, power supply. It is quite OK to use them, indeed it is standard practice to so.
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