MEGA 2560 R3 3D Printer Mainboard With USB Cable + RAMPS 1.4 RepRa + A4988 Drivers Kit For Arduino

Features:-The RAMPS 1.4 board is designed to fit the entire electronics needed for a RepRap in one small package for low cost.-RAMPS interfaces an Arduino Mega with the powerful Arduino MEGA platform and has plenty room for expansion.-The design of plug in stepper drive and extruder electronic control electronics are more easy to service, including Arduino shield parts replacement, upgrade capability 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.specifications:-RAMPS 1.4 set includes: 4 x A4988 drivers with heatsinks, MEGA 2560 R3 Arduino compatible controller board.Model: M-60Microcontroller: mega2560Operating Voltage: 5VInput Voltage (recommended): 7-12VInput Voltage (limits): 6-20VDigital I / O Pins: 54 (of which 14 provide PWM output)Analog Input Pins: 16DC Current per I / O Pin: 40 mADC Current for 3.3V Pin: 50 mAFlash Memory: 256 KB of which 4 KB used by bootloaderSRAM: 8 KBEEPROM: 4 KBClock Speed: 16MHzPackage Included:1 x MEGA 2560 R3 with USB cable1 x RAMPS 1.4 controller board5 x A4988 StepStick Driver module (with heat sink)