Reprap Ramps 1.4 3D Printer Kits

3D Printer Controller RAMPS 1.4: it is designed to fit the entire electronics needed for RepRap in one small package for low cost. 3D Printer Controller RAMPS 1.4: RAMPS interfaces an Arduino-compatible Mega with the powerful Arduino-compatible MEGA platform and has plenty of room for expansion.
3D Printer Controller RAMPS 1.4: The modular design includes stepper drivers and extruder control electronics on an Arduino-compatible MEGA shield for easy service, part replacement, upgrade-ability and expansion.
3D Printer Controller RAMPS 1.4: Fx, 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.
3D Printer Controllers RAMPS 1.4: Version 1.4 uses surface mount capacitors and resistors. the board is an ATmega2560 as core microcontroller development board, with the bootloader, download the program directly via USB without having to go through other external writer.
Supply of the optional USB power, or as an external power using the AC-to-DC adapter and battery.
Material: CCL
Arduino development IDE interface is open-source principles, allows you to free download for use in project work, school teaching, motor control, interactive works.
Operating Voltage: 5V
Input Voltage (recommended): 7-12V
Input Voltage (limits): 6-20V
Digital I / O Pins: 54 (of which 15 provide PWM output)
Analog Input Pins: 16
DC Current for I / O PiN: 40 mA
DC Current for 3.3V Pin: 50 mA
Flash Memory: 256 KB of which 8 KB used by bootloader
SRAM: 8 KB
EEPROM: 4 KB
Clock Speed: 16MHz

A4988 driver module:
A4988 Stepper Motor Driver Board is a breakout board for A4988 DMOS Microstepping Driver with Translator and Overcurrent Protection
Warning: Connecting or disconnecting to stepper motor while the driver is powered can destroy the driver.
1; Maximum output current is 1A
2; Five different step resolutions: full-step, half-step, quarter-step, eighth-step, and sixteenth-step
3; Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay)
4; Over-temperature thermal shutdown, under-voltage lockout, and crossover-current protection
5; Short-to-ground and shorted-load protection

1 x 3D Printer Controller RAMPS 1.4
1 x Arduino-Compatible Mega 2560 R3
4 x A4988 driver + Self-adhensive Heatsink
1 x USB cable

Only the above package content, other products are not included.
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.