RAMPS 1.4 Mega2560 12864 LCD Controller A4988 Kit for Reprap 3D Printer,Default NO5247

Feature:

1. Mega 2560 control board CH340G version:

The Mega 2560 is an update for Mega, which it replaces.

The board is a microcontroller board based on the ATmega2560-16AU .It has 54 digital input/output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started. The Mega is compatible with most shields designed for Duemilanove or Diecimila.

Product Summary:

CH340G replace the Atmega 8U2/16U2

CH340G Driver Download link, please copy the link and paste in browser: http://www.5v.ru/ch340g.htm

Microcontroller:ATmega2560

Clock Speed:16 MHz

EEPROM:4 KB

SRAM:8 KB

Flash Memory:256 KB of which 8 KB used by bootloader

Operating Voltage:5V

Input Voltage (recommended):7-12V

Analog Input Pins:16

Digital I/O Pins:54 (of which 14 provide PWM output)

DC Current for 3.3V Pin:50 mA

DC Current per I/O Pin:40 mA

2. Mega Pololu Shield Compatible (RAMPS 1.4 Shield)

It is a Mega Pololu Shield, or RAMPS for short,designed to fit the entire electronics needed for a RepRap in one small package for low cost. RAMPS interfaces an for Mega with the powerful for MEGA platform and has plenty room for expansion. The modular design includes plug in stepper drivers and extruder control electronics on an for MEGA shield 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.

3. LCD 12864 with Controller

This full graphic Smart Controller contains a SD-Card reader, an rotary encoder and a 128 x 64 dot matrix LCD display. You can easy connect it to your Ramps board using the \"smart adapter\" included.

After connecting this panel to your Ramps you don\'t need your pc any more, the Smart Controller supplies power for your SD card. Further more all actions like calibration, axes movements can be done by just using the rotary encoder on the Smart Controller. Print your 3D designs without PC, just with a g-code design stored on the SD card.

4. A4988 driver module

A4988 Stepper Motor Driver Board is  a breakout board for Allegro’s A4988 DMOS Microstepping Driver with Translator and Overcurrent Protection; please read the A4988 datasheet carefullybefore using this product.

Warning: Connecting or disconnecting a stepper motor while the driver is powered can destroy the driver. (More generally, rewiring anything while it is powered isasking for trouble.)

Maximum output current is 2A

Simple step and direction control interface

Five different step resolutions: full-step, half-step, quarter-step, eighth-step, and sixteenth-step

Adjustable current control lets you set the maximum current output with a potentiometer,which lets you use voltages above your stepper motor’s rated voltage toachieve higher step rates

Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay)

Over-temperature thermal shutdown, under-voltage lockout, and crossover-current protection

Short-to-ground and shorted-load protection

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