Watchdog timer: The board has a watchdog timer that can be used to reset the board in case of a software failure.These timers can be used for a variety of purposes, such as controlling the speed of motors or generating PWM signals for controlling the brightness of LEDs to name a few. Timers: The ATmega2560 contains several timers, including a 16-bit timer/counter with PWM and a 8-bit timer/counter with PWM.Analog-to-digital converter (ADC): It has 16 10-bit analog input pins that can be used to read analog signals, such as those from sensors.Here are some of the peripherals provided by the processor of the Arduino Mega ADK: The board is equipped with a variety of peripherals to support various types of projects. The power supply should also be able to provide enough current to power the board and any connected peripherals.Īrduino Mega ADK Rev3 Pinout and Peripherals It is really important to note that when using an external power supply, the voltage should not exceed the maximum voltage range of the board to avoid damaging the microcontroller. The voltage range for this method is 4.5-5.5V DC. Power Pins: It's even possible to power the board by an external power supply connected to the 5V pin.The voltage range for this method is 7-12V DC.
VIN Pin: The board can also be powered by an external power supply connected to the VIN pin.External Power Supply: The board can also be powered by an external power supply connected to the DC jack.This is the most common method of powering the board during development. USB type B: The board can be powered by connecting it to a computer via the USB type B connector.The power supply options for the Arduino Mega ADK are: It has a voltage regulator on board that converts the input voltage to the appropriate voltage for the microcontroller. The board can be powered through the USB Type B connector or an external power supply. The Arduino Mega ADK's microcontroller (ATmega2560) can handle the maximum voltage of 5.5V DC. LEDs: The board utilizes several LEDs, including a power LED, a pin 13 LED, and a RX and TX LEDs which indicate when data is being transmitted or received.Power Jack: The board has a 2.1 mm center-positive power jack, which can be used for connecting an external power supply, such as a battery or wall adapter.In those scenarios the board acts as the USB host. The other is USB type A connector that can be used to connect other USB devices to the board. One USB type B which can be used for programming the board and for providing power to the board. USB Connector: The board has two USB port.ICSP Header: The ICSP header is intended for programming the board with an external programmer.Reset Button: The reset button can be used to restart the microcontroller or to put it into bootloader mode for uploading new sketches.The board also has a VIN pin, which is the input voltage to the board when it is powered by an external power supply. Power Pins: Arduino Mega ADK have several power pins, including 3.3V and 5V pins, which can be used to power other devices or sensors.Analog Input Pins: The board provides 16 analog input pins, which can be used for reading analog sensors, such as temperature sensors, light sensors, and potentiometers.15 of these pins can also be used as PWM outputs for controlling the brightness of LEDs or the speed of motors as an example. Digital I/O Pins: The board has 54 digital input/output pins, which can be used for a variety of purposes, such as reading sensors, controlling LEDs, and communicating with other devices.Dimensions: The board measures 101.52mm x 53.3mm.Here are a few of the most important components and connectors to be aware of: The Arduino Mega ADK is a relatively large development board that is packed with a variety of components and features. Arduino Mega ADK Rev3 Pin Headers and Components