Ramps 1.5 Controller Board Upgrade – for 3D Printer

The RAMPS 1.5 Controller Board is an upgraded Arduino MEGA shield that serves as the central hub for your RepRap-style 3D printer, combining motor control, temperature sensing, and power management into a single compact board. Measuring 11.5×6 cm, it fits standard RAMPS enclosures while offering meaningful hardware improvements over the original RAMPS 1.4. This ramps 1.5 controller ships ready to accept up to five Pololu-compatible stepper driver modules (X, Y, Z, E0, E1), giving you full control over each axis and dual extruders. Three dedicated thermistor circuits let you monitor the hotend and heated bed simultaneously, while a separate 11 A blade fuse protects the bed heater circuit and a 5 A fuse guards the extruder heaters — making blown-fuse diagnosis quick and replacement simple. A built-in LED indicator for the heater circuit gives instant visual confirmation that bed heating is active. Key Features Upgraded RAMPS 1.5 design — drop-in replacement for RAMPS 1.4 builds 5 × Pololu stepper driver slots (X, Y, Z, E0, E1) for dual-extruder support 3 × thermistor inputs for hotend and heated bed monitoring 11 A heated bed fuse and 5 A extruder fuse — separate, easily replaceable blade fuses LED indicator for heater circuit activity I²C and SPI expansion headers for LCD displays, sensors, and peripherals SD card add-on header for standalone printing without a host PC Compatible with GRBL, Marlin, Repetier, and other major 3D printer firmware Fits standard Arduino MEGA 2560 — no soldering required for assembly Use Cases Building or upgrading a RepRap Prusa, Mendel, or CoreXY 3D printer Dual-extrusion setups requiring independent motor and temperature control Heated bed printers that need robust bed power handling Standalone SD card printing without a Raspberry Pi or OctoPrint host Works Well With RAMPS 1.4 Controller Board — compare specs or keep as a spare board MKS BASE 1.6 Controller Board — all-in-one alternative with MEGA and drivers integrated Project Ideas & Tutorials Wiring a 3D Printer with RAMPS — step-by-step wiring guide applicable to RAMPS 1.5 RepRap RAMPS Wiki — comprehensive reference for firmware configuration and pinouts Package Contents 1 × RAMPS 1.5 Controller Board