3D PrinterController RAMPS 1.4 + Mega 2560 R3 + 5 x A4988 + 2004 LCD Controller forArduino RepRap

Features:

(1) 3D Printer Controller RAMPS 1.4

 
The RepRap Arduino-compatible MEGA PololuShield, or RAMPS for short. It is designed to fit the entire electronics neededfor a RepRap in one small package for low cost. RAMPS interfaces anArduino-compatible Mega with the powerful Arduino-compatible MEGA platform andhas plenty room for expansion. The modular design includes plug in stepperdrivers and extruder control electronics on an Arduino-compatible MEGA shieldfor easy service, part replacement, upgrade-ability and expansion.Additionally, a number of Arduino expansion boards can be added to the systemas 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 edgeissue cases.

(2) Arduino-Compatible Mega 2560 R3

Fully compatible with original Arduino MEGA 2560 R3, with this product , youare able to use all the Arduino open source platform to create or learninteractive objects , it will be a lot of fun while you are creating andlearning it , so just get this and start it , we also provide reference pdffiles that can help you to improve skills very quickly . after all , timematters , the sooner you can improve your programing skills , the sooner youcan create amazing projects !
Compared with UNO R3 , this is with main Chip ATmega2560 , with more I/O Pins ,and additional  10 PWM output , of course, the EEPROM is also with larger space.
(3) A4988 StepStick Stepper Motor Driver Module

A4988 is a complete microstepping motor driver with built-in translator foreasy operation. This product is available in full, half, 1/4, 1/8 and 1/16 stepmodes operate bipolar stepper motors, output drive capacity of up to 35 V and ±2 A. A4988 includes a fixed off-time current regulator, the regulator in slowor mixed decay modes. A4988 converter is the key to the easy implementation. Aslong as the "step" input inputting one pulse drives the motor onemicrostep. There are no phase sequence tables, high frequency control lines, orcomplex interfaces to program. A4988 interface is very suitable for complexmicroprocessor is unavailable or is overburdened.
In the micro-step operation, A4988 chopping control inside automaticallyselects the current decay mode (Slow or Mixed). In mixed decay mode, the deviceis initially set to a fixed downtime in some fast decay, then the rest of theslow decay downtime. Mixed decay current control scheme results in reducedaudible motor noise, increased step accuracy, and reduced power consumption.Internal synchronous rectification control circuitry is provided to improve thepulse-width modulation (PWM) operation power consumption. Internal circuitprotection includes: thermal shutdown with hysteresis, undervoltage lockout(UVLO), and crossover-current protection. Special power sequencing.
4）2004 LCDController Module & Smart Adapter

.Print your 3D designs without PC, just with a g-code design stored on the SDcard
.Reprap Ramps V1.4 smart 20*4 2004
.After connecting this panel to your Ramps you don't need your pc any more, theSmart Controller supplies power for your SD card. Further more all actions likecalibration, axes movements can be done by just using the rotary encoder on theSmart Controller
.This Smart Controller contains a SD-Card reader, an rotary encoder and a 20Character x 4 Line LCD display. You can easy connect it to your Ramps boardusing the "smart adapter" included

Specifications:

Color: Multicolored
Material: FR4
Product Weight:340g
Package Dimensions:200*150*43mm
Packing: Carton Packing

Package Content:

.1 x Ramps 1.4
.1 x Arduino 2560 R3
.5 x 4988 Motor Drive Module
.1 x 2004 LCD Controller
.2 x Connection Cables
.1 x Connection Board
.1 x USB Cable