Core Function:​​ RepRap Mega Pololu Shield (RAMPS 1.4) integrating 3D printer control electronics as Arduino Mega 2560 expansion board.

​​Motor Control System:​​

Supports 5 Pololu stepper drivers with socketed design for easy replacement

Fifth stepper output configurable as Z-axis motor or second extruder

Dual Z-motor compatibility for Prusa Mendel configuration

​​Power & Thermal Management:​​

​​Triple MOSFET Outputs:​​ Drive three heaters/fans simultaneously

​​Thermistor Circuits:​​ Three channels for temperature monitoring

​​Heated Bed Control:​​ 11A fused circuit for safe high-current operation

​​General Protection:​​ 5A fuse for component safety

​​Connection Interface:​​

​​Controller Link:​​ Full compatibility with Arduino Mega 2560

​​Expansion Ports:​​ I2C/SPI pins available for future upgrades

​​Sensor Connectivity:​​ Gold-plated 3A servo connectors for endstops/LEDs/motors

​​Hardware Specifications:​​

​​Power Rating:​​ 11A max for heated bed, 5A for main circuit

​​Modular Design:​​ Top-positioned in shield stack for easy access

​​Indication System:​​ LED status lights for heater output

​​Prusa Support:​​ Dual Z-motor wiring option for Mendel printers

​​Critical Notes:​​

​​Voltage Requirements:​​ Matches Arduino Mega 2560 power input

​​Driver Compatibility:​​ Works exclusively with Pololu-style stepper boards

​​Physical Configuration:​​ Must remain top shield in Arduino stack

​​Package Included:​​ 1 × RAMPS 1.4 3D Printer Control Board