RAMPS 1.4, 3D Printer RAMPS 1.4 Controller + R3 + A4988 With Heat Sink USB Calbe Jumper Kit With Fast Shipping And Top-rated Customer Service. Once You Know, You !

The RAMPS 1.4 board is designed to fit the entire electronics needed for a RepRap in one small package for low cost. The modular design includes plug in stepper drivers and extruder control electronics on an MEGA for easy service, part replacement, upgrade-ability and expansion. Additionally, a number of expansion boards can be added to the system as long as the main RAMPS board is kept to the top of the stack. Mega is a micro-controller development board itself has 54 groups digital I / O input / output terminal (14 groups do PWM outputs), 16 sets of simulation than the input side, group 4 UARTs (hardware serial ports), using the 16 MHz crystal oscillator. With the boot-loader, download the program directly via USB without having to go through other external writer. Supply part of the optional USB power, or as an external power using the AC-to-DC adapter and battery. Development IDE interface is based on open-source principles, allows you to download for use in project work, school teaching, motor control, interactive works. A4988 driver is a carrier board or board for Allegro's A4988 DMOS micro-stepping driver with translator and Over current by Pololu; HAS PLENTY ROOM FOR EXPANSION:RAMPS interfaces an Mega with the powerful MEGA platform and has plenty room for expansion WITH THE BOOT-LOADER:With the boot-loader, download the program directly via USB without having to go through other external writer