Documents

Arduino Mega 2560 Rev3 Pinout, Atmega2560 Pin Mapping, EAGLE Files, Schematics, and More!

e14cstanton — Tue, 21 Jan 2025 14:31:48 GMT

Current Revision posted to Documents by e14cstanton on 1/21/2025 2:31:48 PM

Here you will find all of the technical documentation and support files for the Arduino Mega 2560 Revision 3.

Arduino Comparison Chart: Boards & Modules

I/O - All 54 digital bins on the Arduino 2560 can either be used as an input or an output, using pinMode(), digitalWrite(), and digitalRead() functions. They operate at 5 volts and each pin can provide and receive a maximum of 40 mA and has an internal pull-up resistor (that is disconnected by default) of 20-50 kOhms.

The following pins have specialized functions:

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)

* Also connected to the corresponding pins of the ATmega16U2 USB-to-TTL Serial chip.

External Interrupts: Pins 2 (interrupt 0), 3 (interrupt 1), 18 (interrupt 5), 19 (interrupt 4), 20 (interrupt 3), and 21 (interrupt 2) can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value.

PWM: Pins 2 to 13 and 44 to 46 provide 8-bit PWM output with the analogWrite() function.

SPI: Pins 50 (MISO), 51 (MOSI), 52 (SCK), 53 (SS) support SPI communication using the SPI library. They are also broken out on the ICSP header, which is compatible with the Uno, Duemilanove, and Diecimilia.

LED: Pin 13 connects to the built-in LED. When the pis is HIGH value the LED is on, when it is LOW value it's off.

TWI: Pin 20 (SDA) and 21 (SCL) support TWI communication using the WIRE library.

AREF: The reference voltage for analog inputs is used with analogReference().

Reset: for this pin bring the reset line LOW to reset the microcontroller. This pin is typically used when there is a shield that is blocking the reset on the board.

Atmega2560 Pin Mapping

Arduino Home

An Open-Source platform to create digital devices and interactive objects that sense and control physical devices.

Arduino Tutorials

Arduino Projects

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Tags: arduino datasheet, arduino mega 2560, 2560 schematics, mega 2560, arduino tech specs, arduino_techspecs, 2560 pin mapping, arduino technical specifications, arduino_classic_techsheets, arduino pinout, arduino, arduino mega

Arduino Leonardo Pinout, ATmega 32U4 Pin Mapping, Schematics, EAGLE Files, and More!

e14cstanton — Tue, 21 Jan 2025 14:29:52 GMT

Current Revision posted to Documents by e14cstanton on 1/21/2025 2:29:52 PM

Arduino Home

An Open-Source platform to create digital devices and interactive objects that sense and control physical devices.

Arduino Tutorials

Arduino Projects

Arduino Comparison Chart: Boards & Modules

Eagle Files

Download Schematics

The above schematic is provided to demonstrate what you would need to do to build your own board. Coming up with the Arduino required taking an off the shelf microcontroller, using a lot of extra parts, and putting it together in a way that is simple to use. The genius behind the Arduino is the hard work is done for you, and the microcontroller is designed to be easily programmable through the Arduino IDE.

To do anything useful with the Arduino you will need to know the various parts of the circuit board.

It is notable for its inclusion of more digital and analog pins.

The Leonardo was the first Arduino to use Atmel's ATmegaXU4 series chip with built-in USB.

ATmega 32U4 Pin Mapping

The 20 digital i/o pins of the Leonardo can be used as input or output using the pinMode(), digitalWrite(), and digitalRead() functions. Each operates at 5 V and can provide or receive a maximum of 40 mA. It has an internal pull-up resistor (disconnected by default) of 20-50 kOhms.

The Following Pins have specialized functions:

Serial: Pin 0 is used for receiving (RX) and Pin 1 is used for transmitting (TX) TTL serial data using the ATmega32U4 hardware serial capability. On the Lenoardo, serial Class refers to USB (CDC) communications; for TTL serial on pins 0 and 1, use the Serial1 class.

TWI: Pin 2 (SDA) and Pin 3 (SCL) support TWI communication using the Wire Library. These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value.

SPI (Serial Peripheral Interface) Pins: There is no exposed pin for SS but you could use digital Pin 10 as it is next to the other pins. You could also use MOSI - Master Out/Slave In as digital 11, MISO - as digital 12, and SCK as digital 13.

These pins support SPI communication using the SPI library. Note that the SPI pins are not connected to any of the digital I/O pins as they are on the Uno, They are only available on the ICSP connector.

This means that if you have a shield that uses SPI, but does NOT have a 6-pin ICSP connector that connects to the Leonardo’s 6-pin ICSP header, the shield will not work.

MISO (Master In Slave Out) - This is the line that carries data from the Leonardo to the SPI-controlled device(s).
MOSI (Master Out Slave In) - This line carries data from the SPI device back to the Leonardo
SS (Slave Select) - This tells the device on the bus we wish to communicate with it . Each SPI device needs a unique SS line back to the Arduino.
SCK (Serial Clock) - The clock pulses which synchronize data transmissions generated by the master

As you can see from the image above, on the Leonardo the SPI pins are located on the ICSP header Pins:

Arduino Board	MOSI	MISO	SCK	SS (slave)	SS (Master)	Level
Leonardo	ICSP - 4	ICSP-1	ICSP-3	-	-	5V

LED: Built-in LED is connected to pin 13. Setting the pin to HIGH value turns the LED on and setting it LOW means its off.

Analog Inputs: A0-A5, A6 – A11 (on digital pins 4, 6, 8, 9, 10, and 12). The Leonardo has 12 analog inputs, labeled A0 through A11, all of which can also be used as digital i/o. Pins A0-A5 appear in the same locations as on the Uno; inputs A6-A11 are on digital i/o pins 4, 6, 8, 9, 10, and 12 respectively. Each analog input provide 10 bits of resolution (i.e. 1024 different values). By default the analog inputs measure from ground to 5 volts, though is it possible to change the upper end of their range using the AREF pin and the analogReference() function.

You can map analog pins as digital using the following code:

// Mapping of analog pins as digital I/O

// A6-A11 share with digital pins

static const uint8_t A0 = 18;

static const uint8_t A1 = 19;

static const uint8_t A2 = 20;

static const uint8_t A3 = 21;

static const uint8_t A4 = 22;

static const uint8_t A5 = 23;

static const uint8_t A6 = 24; // D4

static const uint8_t A7 = 25; // D6

static const uint8_t A8 = 26; // D8

static const uint8_t A9 = 27; // D9

static const uint8_t A10 = 28; // D10

PWM: Pins 3, 5, 7, 9, 10, 11, and 13 provide 8 bit PWM output with the analogWrite() function

Pin 13 - drives the built in LED, that is used by Arduino to receive power and useful for debugging. When pin is HIGH value, the LED is on, when pin is LOW value, it's off.

Analog Reference Pin (AREF) - input pin used optionally if you want external voltage reference for ADC rather than internal Vref. You can configure using an internal register.

Reset Pin - bring this line low to reset the microcontroller. Typically used to add a reset button to shields that block the one on the board.

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Tags: arduino_techspecs, arduino_classic_techsheets, arduino pinout

Arduino Mega 2560 Rev3 Pinout, Atmega2560 Pin Mapping, EAGLE Files, Schematics, and More!

cstanton — Wed, 05 Jul 2023 11:52:20 GMT

Revision 3 posted to Documents by cstanton on 7/5/2023 11:52:20 AM

Here you will find all of the technical documentation and support files for the Arduino Mega 2560 Revision 3.

Arduino Comparison Chart: Boards & Modules

Eagle Files

Download Schematics

The following pins have specialized functions:

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)

* Also connected to the corresponding pins of the ATmega16U2 USB-to-TTL Serial chip.

PWM: Pins 2 to 13 and 44 to 46 provide 8-bit PWM output with the analogWrite() function.

LED: Pin 13 connects to the built-in LED. When the pis is HIGH value the LED is on, when it is LOW value it's off.

TWI: Pin 20 (SDA) and 21 (SCL) support TWI communication using the WIRE library.

AREF: The reference voltage for analog inputs is used with analogReference().

Reset: for this pin bring the reset line LOW to reset the microcontroller. This pin is typically used when there is a shield that is blocking the reset on the board.

Atmega2560 Pin Mapping

Arduino Home

An Open-Source platform to create digital devices and interactive objects that sense and control physical devices.

Arduino Tutorials

Arduino Projects

Arduino Mega 2560 Rev3 Pinout, Atmega2560 Pin Mapping, EAGLE Files, Schematics, and More!

cstanton — Tue, 13 Jun 2023 10:51:57 GMT

Revision 2 posted to Documents by cstanton on 6/13/2023 10:51:57 AM

Here you will find all of the technical documentation and support files for the Arduino Mega 2560 Revision 3.

Arduino Comparison Chart: Boards & Modules

Eagle Files

Download Schematics

The following pins have specialized functions:

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)

* Also connected to the corresponding pins of the ATmega16U2 USB-to-TTL Serial chip.

PWM: Pins 2 to 13 and 44 to 46 provide 8-bit PWM output with the analogWrite() function.

LED: Pin 13 connects to the built-in LED. When the pis is HIGH value the LED is on, when it is LOW value it's off.

TWI: Pin 20 (SDA) and 21 (SCL) support TWI communication using the WIRE library.

AREF: The reference voltage for analog inputs is used with analogReference().

Reset: for this pin bring the reset line LOW to reset the microcontroller. This pin is typically used when there is a shield that is blocking the reset on the board.

Atmega2560 Pin Mapping

Arduino Home

An Open-Source platform to create digital devices and interactive objects that sense and control physical devices.

Arduino Tutorials

Arduino Projects

Back to School Wishlist - featuring Arduino and Raspberry Pi!

dychen — Tue, 28 Mar 2023 12:22:03 GMT

Current Revision posted to Documents by dychen on 3/28/2023 12:22:03 PM

It's fall again and students are headed back to school. Raspberry Pi and Arduinos are great tools for experimenting and learning; every engineering student should have one, or both! For this wishlist, we've put together some interesting accessories and starter kits that will get you on your way with Pi and Arduino projects.

Let's get started with the basics!

Breadboard
For most projects, you'll need a breadboard. They'll let you tweak your circuits without having to solder. Note: some of the starter packs below already contain breadboards.

Documents

Arduino Mega 2560 Rev3 Pinout, Atmega2560 Pin Mapping, EAGLE Files, Schematics, and More!

Arduino Leonardo Pinout, ATmega 32U4 Pin Mapping, Schematics, EAGLE Files, and More!

ATmega 32U4 Pin Mapping

Arduino Mega 2560 Rev3 Pinout, Atmega2560 Pin Mapping, EAGLE Files, Schematics, and More!

Arduino Mega 2560 Rev3 Pinout, Atmega2560 Pin Mapping, EAGLE Files, Schematics, and More!

Back to School Wishlist - featuring Arduino and Raspberry Pi!

Back to School Wishlist - featuring Arduino and Raspberry Pi!

Arduino Accessories Wishlist and Giveaway

Arduino Accessories Wishlist and Giveaway

Back to School Wishlist - featuring Arduino and Raspberry Pi!

Back to School Wishlist - featuring Arduino and Raspberry Pi!

Back to School Wishlist - featuring Arduino and Raspberry Pi!

Back to School Wishlist - featuring Arduino and Raspberry Pi!

Back to School Wishlist - featuring Arduino and Raspberry Pi!

Back to School Wishlist - featuring Arduino and Raspberry Pi!

Back to School Wishlist - featuring Arduino and Raspberry Pi!

Back to School Wishlist - featuring Arduino and Raspberry Pi!

Back to School Wishlist - featuring Arduino and Raspberry Pi!

Back to School Wishlist - featuring Arduino and Raspberry Pi!

Back to School Wishlist - featuring Arduino and Raspberry Pi!

Back to School Wishlist - featuring Arduino and Raspberry Pi!