Reprap Ramps 1.4 Kit With Mega 2560 r3 + 2004 LCD Controller + A4988 Driver

RAMPS 1.4:
This list is Pololu trillion rupiah , or ramps shorter. It was designed as a low-cost small package RepRap needs to fit the entire electronics . Oblique interface with the powerful MEGA platform  Mega , and have plenty of room for expansion. In the stepper drives and an MEGA shield extruder control electronics for easy maintenance , replacement parts , upgrades, capacity and expandable modular design includes plug-ins. In addition, some expansion boards can be added to the system , as long as the main ramp plate is saved to the top of the stack .
 
This board is mainly based on the Pololu_Electronics and work Tonok Adrian 's . Copper etching anti- Vick recommended method . Vick also by the work of EasyDrivers inspiration. Circuit design mainly based on the provision of initial Adrian'sPololu_Electronics Joaz RepRapSource.com pin definitions and many design improvements. Too much inspiration , advice, and from Prusajr, Kliment, Maxbots, Rick, and many other RepRap community ideas.
 
Feature
   1 It has Cartesian robot and the requirements of the extruder .
    (2) extended to control other accessories.
    3 heater / fan output and three thermistor circuit MOSFET.
    4 fusion 5A additional safety and component protection
    5 heating control extra bed 11A fuse
    6 Suitable for 5 Pololu stepper driver board
    7.Pololu board pin socket, so they can be easily replaced or removed for future designs .
    8.I2C and SPI pins left for future expansion.
    9 All the MOSFET PWM pin is hooked into versatility .
    10 . Servo connector for connection to the end stop block , the motor and the light emitting diodes. These connectors are gold-plated , rated current of 3A, very compact.
    11.SD card add - is now available from the Kliment - Sdramps
    12.LED indicate when the heater output
    13 Option 2 motors connected to the Z Prusa Mendel

 
A4988:
A4988 is a complete microstepping motor driver with built-in translator for easy operation. This product is available in full, half, 1/4, 1/8 and 1/16 step modes operate bipolar stepper motors, output drive capacity of up to 35 V and ą 2 A. A4988 includes a fixed off-time current regulator, the regulator in slow or mixed decay modes. A4988 converter is the key to the easy implementation. As long as the "step" input inputting one pulse drives the motor one microstep. There are no phase sequence tables, high frequency control lines, or complex interfaces to program. A4988 interface is very suitable for complex microprocessor is unavailable or is overburdened.

     In the micro-step operation, A4988 chopping control inside automatically selects the current decay mode (Slow or Mixed). In mixed decay mode, the device is initially set to a fixed downtime in some fast decay, then the rest of the slow decay downtime. Mixed decay current control scheme results in reduced audible motor noise, increased step accuracy, and reduced power consumption. Internal synchronous rectification control circuitry is provided to improve the pulse-width modulation (PWM) operation power consumption. Internal circuit protection includes: thermal shutdown with hysteresis, undervoltage lockout (UVLO), and crossover-current protection. Special power sequencing.

     A4988 surface mount QFN package (ES), a size of 5 mm × 5 mm, nominal overall package height of 0.90 mm, with an exposed pad for enhanced thermal dissipation. This package is Pb (suffix-T), with 100% matte tin leadframe plating.

Features and Benefits
ˇ Low RDS (On) Output
 ˇ Automatic current decay mode detection / selection
 ˇ Mix with slow current decay modes
 ˇ Synchronous rectification for low power dissipation
 ˇ Internal UVLO
 ˇ Cross-current protection
 ˇ 3.3 and 5 V compatible logic supply
 ˇ Thermal shutdown circuitry
 ˇ Ground fault protection
 ˇ Load short-circuit protection
 ˇ Optional step five modes: full, 1/2, 1/4, 1/8 and 1/16

 
Mega 2560:
   Microcontroller : ATmega2560
   Operating Voltage : 5V
   Input Voltage (recommended) : 7-12V
   Input Voltage (limits) : 6-20V
   Digital I/O Pins : 54 (of which 14 provide PWM output)
   Analog Input Pins : 16
   DC Current per I/O Pin : 40 mA
   DC Current for 3.3V Pin : 50 mA
   Flash Memory : 256 KB of which 4 KB used by bootloader
   SRAM : 8 KB
   EEPROM : 4 KB


2004 LCD Module Control for 3D Printer Reprap Smart Controller Ramps 1.4:
Description
The intelligent controller includes an SD card reader, rotary encoders and a 20-character × 4 line LCD display. You can easily connect it to your RAMPS 1.4 board using "smart adapter" included.
This panel connect your RAMPS 1.4, you do not need your computer, your SD card intelligent controller power supply. All further operations, such as calibration, the axis movement can be done only with a rotary encoder intelligent controller. 3D design print without a computer, just use the G code design stored on the SD card.

For More Details on PC Click here

For More Details on Portables Click here.