Oumefar RAMPS 1.4 Controller + MEGA2560 R3 Board + 5pcs Soldered A4988 Stepper Motor Drivers + 5pcs Heat Sinks + 19pcs Jumpers with USB Cable for RepRap 3D Printer Kit

SAVING SPACE: RAMPS 1.4 board is compact in design and consolidates all necessary electronics for a RepRap machine into one small package. This helps to save space and reduce costs.
SCALABLE: The RAMPS board interfaces with the powerful MEGA platform, providing ample room for expansion. Additional expansion boards can be easily added to the system, as long as the main RAMPS board remains at the top of the stack.
EASY TO USE: The RAMPS board supports bootloader functionality, allowing users to directly download programs via USB without requiring external writers. The development IDE interface is based on open-source principles, making it easy to obtain and use for various project work, school teaching, motor control, and interactive applications.
MODULAR DESIGN: The modular design of the RAMPS board includes plug-in stepper drivers and extruder control electronics on a MEGA shield. This facilitates easy service, part replacement, upgrade-ability, and expansion, making it convenient for users to customize and improve their RepRap machine.
POWER SUPPLY AND DRIVER: The RAMPS board can be powered by optional USB power or an external AC-to-DC adapter and battery. This board also includes a stepper motor driver capable of controlling one bipolar stepper motor with an output current of up to 2 A per coil.