This 3D printer kit consists of a RAMPS 1.4 shield, an Mega 2560 board, five Stepper drivers and a LCD. It can control up to 5 stepper motors with 1/16 stepping precision and interface with a hotend, a heatbed, a fan (or a second hotend), a LCD controller, a 12V (or 24V with appropriate modification) power supply, up to three thermistors, and up to six end stoppers. Features - ColorAssorted Color - Material: Electric components. - Size: About 16 * 7 * 3 cm(L*W*H). - : 1.5.X - RAMPS 1.4 shield is a control board for RepRap i3 3D compatible printer. - A4988 Stepper Motor Driver is built-in for easy operation - LCD 12864 with Controller contains -Card reader, an rotary and a 128 Character x 64 Line LCD display. - Including RAMPS 1.4, 12864 LCD, , A4988 stepping motor driver. Mega 2560 R3 Board - Microcontroller: ATMEGA2560-16AU - Operating Voltage: 5V - Input Voltage (recommended): 7-12V - Input Voltage (limits): 6-20V - Digital Pins: 54 (of which 15 provide PWM output) - Analog Input Pins: 16 - DC Current per Pin: 40 mA - DC Current for 3.3V Pin: 50 mA - Flash Memory: 256 KB of which 8 KB used by bootloader - : 8 KB - : 4 KB - Clock Speed: 16 MHz Package list: 3 x RepRap RAMPS 1.4 3 x Board 3 x 12864 LCD Graphic Set 15 x A4988 Step motor driver with heat sink