SPI enable bit must be set to start communication with other devices.
Elegoo arduino mega 2560 tutorial serial#
These pins are used for serial communication with SPI protocol for communication between 2 or more devices. It can be used by pinMode for pin direction, analogRead to read pin status and get digital value for analog signal, care must be taken for internal or external reference voltage selection and Aref pin. Due to the many numbers of pins, it is not usually used for common projects but you can find them in much more complex ones like Radon detectors3D printers, temperature sensing, IOT applications, real-time data monitoring applications etc.Īrduino Mega has inbuilt reset circuit with push button to reset system and this pin can be used by other devices to reset controller.ĭigital Pins: From digital and analog can be use as input or output for digital transducer and output devices by pinMode for pin direction, digtalWrite to write pin and digitalRead to read pin status.Īnalog pins: From analog can be used as analog input pin for adc, if not used than it work as normal digital pin. Brownout and watchdog help to make the system more reliable and robust. It is also compatible with the different type of boards like high-level signal 5V or low-level signal 3. Other features include JTAG support for programming, debugging and troubleshooting. It has more than 5 pins for Vcc and Gnd to connect other devices to Arduino Mega. Secondly, it has inbuilt RTC and other features like analog comparator, advanced timer, interrupt for controller wakeup mechanism to save more power and fast speed with 16 Mhz crystal clock to get 16 MIBS. When cheaper boards are available, why go with Arduino Mega? The main reason behind this is the additional features that are inbuilt with this board.
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