This is RAMPS pre-assembled where you will receive all electronic components securely soldered to the PCB, ready for use & your choice of endstop wires.

RAMPS - RepRap Arduino Mega Pololu Shield board. This is version 1.4 of our shield, designed to drive a RepRap from an Arduino Mega.  It uses Pololu Stepper Drivers delivering up to 1/16 microstepping.  Four drivers are needed to move most 3D printers, with 3 going to the axis & one driving the extruder.  An optional fifth stepper driver socket has been provided for additional applications.

Additional information and sources at RepRap.org/wiki/RAMPS.   This board is Open Source Hardware licensed GPLv3, so please use, copy, improve, hack, upgrade, and / or contribute.

RAMPS provisions:

• 3 PWM controlled mosfet powered outputs
• Heated bed control with 11A fuse
• 3 thermistor circuits
• 5 Pololu Stepper Driver sockets (driver boards purchased separately)
• 6 sets of Digital Pins in headers with VCC and GND for endstops (endstops purchased separately)
• Uses pluggable screw terminal block for power connection
• Fused at 5A for additional safety and component protection
• Extra pins broke out :  PWM, digital, serial, SPI, I2C and analog
• Use of widely available, low cost, high quality RC servo connectors for interconnects
• Arduino MEGA (not included) and Pololu Stepper Drivers (not included) easily removable for reuse at RAMPS end of life

PLEASE CHOOSE YOUR ELECTRONIC WIRING:

Mechanical Switch Wiring (Default option)
***Mechanical switches not included***

• 1x3 0.10" 5A housings for endstop wires(x3)
• 3.18mm terminal female connector for endstop wires (x6)
• Pre-crimped black 24" endstop wires (x3)
• Pre-crimped white 24" endstop wires (x3)
• 36" 9 conductor, 26awg cable, pre-crimped w/ 1x2 0.10" 5A connectors/housing for thermistor (x1) *thermistor not included*
• 1x4 0.10" 5A connectors/housings for crimping motor cables (x5)

OR

Optical Switch Wiring
***Optical switches not included***

• 1x3 0.10" 5A connectors/housings for endstop wires (x6)
• Pre-crimped red 24" endstop wires (x3)
• Pre-crimped black 24" endstop wires (x3)
• Pre-crimped white 24" endstop wires (x3)
• 36" 9 conductor, 26awg cable, pre-crimped w/ 1x2 0.10" 5A housing for thermistor (x1) *thermistor not included*
• 1x4 0.10" 5A connectors/housings for crimping motor cables (x5)

Here are some items needed to complete your 3D printer electronics, but not included with this pre-assembled board:

• Arduino Mega 2560
• Mechanical or Optical Endstops (x3 recommended)
• Pololu Stepper Drivers w/ heatsinks (x4)
• USB 2.0 Cable
• Min 12V 5A DC power supply required (up to 16A total required if heatbed is used)
• Motors

Recommended optional add ons:

• Prusa PCB Heated Bed
• 5th stepper driver (for possible 2nd extruder)
•  Kliment's SD RAMPS

Needed to complete your 3D Printer:

• Thermistors
• Extruder
• Printed Parts
• Hardware
• PLA

PLEASE VIEW OUR ADDITIONAL RAMPS OPTIONS:

• DIY Kit-  includes all electronic components & the PCB needed to fully assemble RAMPS & choice of endstop wires 
• DIY Kit Complete-  includes all electronic components & the PCB needed to fully assemble RAMPS, your choice of endstop wires & switches, one (x1) Arduino Mega 2560, four (x4) Pololu Stepper Drivers w/ heatsinks, one (x1) USB cable
• Pre-Assembled Complete-  all electronic components securely soldered to the PCB, tested & ready for use, one (x1) Arduino Mega 2560 connected to RAMPS, four (x4) Pololu Stepper Drivers w/ heatsinks connected to RAMPS, your choice of endstop wires & switches, one (x1) USB cable