Arduino boards are a type of development board that allow you to build and program your own electronic projects. They consist of a microcontroller, which is a small computer on a single chip, and a variety of input and output pins that you can use to connect sensors, actuators, and other electronic components.
Arduino boards is that they are based on open-source hardware and software. Open source means that the designs, schematics, and source code of the Arduino boards are freely available for anyone to access, use, modify, and distribute. This open nature encourages collaboration, innovation, and learning within the Arduino community.
DFRduino Mega2560 made by DFRobot is a arduino Mega 2560 R3 compatible board using the ATmega 2560 microcontroller
Specifications
Controller Model: ATmega2560
Operating Voltage: 5V
Input Voltage(VIN): 3-16V(20V max)
Digital I/O Pins: 54 (of which 15 provide PWM output)
Analog Inputs: 16 I/O
FLASH: 256 KB (of which 4 KB is used by the bootloader)
SRAM: 8KB
EEPROM: 4KB
Frequency: 16MHz