Designed by Aleksandr Semochkin | Released under CC BY-SA 4.0


A device uses electronic components similar to ordinary RepRap. Namely, four stepper motors NEMA 17 (holding torque at least 44 N cm); Arduino Mega 2560 controller and expansion card RAMPS 1.4; four stepper motor drivers A4988; three mechanical limit switches; Smart LCD Controller with a four-line LCD screen, controls (angular sensor and buttons), SD card reader, shield cable to connect to RAMPS 1.4; PSU 12 volt 20 amp.

Special Considerations

On the stepper driver board the jumpers need to be installed under each stepper driver to full step.


Components Pcs
Power supply model S-250W-12V. AC input 110/220V. DC output 12 V 20.8A. 1
A NEMA 17 screw linear stepper motor T8 * 8 42 * 39 300 mm with cable (for 3D printing). 2
A NEMA 17 stepper motor with a 1.7 x 1.7 inch (43.2 x 43.2 mm) faceplate. 2
Mechanical Endstop switch w/ LED indicator
(for RepRap 3D Printer Prusa Mendel RAMPS 1.4 or CNC.3X endstop switches/cable. 2.54 mm spacing dupont connector for RAMPS and arduino. LED indicator)
LCD 2004 Smart Display Controller for RAMPS 1.4
(This Smart Controller contains a SD-Card reader, an rotary encoder and a 20 Character x 4 Line LCD display. Usualy package contains: 1 x LCD 2004 Smart controller. 1 x Connection adapter. 2 x Connection cables.)
Pololu A4988 Stepper Motor Driver Carrier 4
RAMPS 1.4 Electronics Controller Board for RepRap 3D Printer Mendel Prusa i3. 1
Arduino Mega 2560 1

Creative Commons License Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)