Note:The Color Of A4988 Will Be Shipped In Random(green or red)MEGA 2560 R3 BoardThe Mega is 100% compatible with Arduino and most shields designed for the ArduinoThe chip is Atmega2560-16au and Atmega16u2, same with the official version.Improved and expert version: 1.0 pinout: added SDA and SCL pins that are near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board. In future, shields will be compatible both with the board that use the AVR, which operate with 5V and with the Due that operate with 3.3V. The second one is a not connected pin, that is reserved for future purposes.Stronger RESET circuit.It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with an AC-to-DC adapter or battery to get started.RAPMS 1.4 ControllerFully assembled & tested, no soldering requiredDesigned to fit the entire electronics needed for a RepRap in one small package for low cost.Modular design includes plug in stepper drivers and extruder control electronics on an Arduino MEGA shield for easy service, part replacement, upgrade-ability and expansion.A number of Arduino expansion boards can be added to the system as long as the main RAMPS board is kept to the top of the stack.Version 1.4 uses surface mount capacitors and resistors to further cover edge issue cases.Package List:1x MEGA 2560 R3 Board1x RAMPS 1.4 Controller5x A4988 Driver5x Heat Sink1x Screwdriver
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