RAMBo v1.3 Kit (with wires and connectors)

RepRappers rejoice, the RAMBo v1.3 Kit (with wires and connectors) is here! This all-in-one 3D printer motherboard is made by Ultimachine, one of the most reliable and trustworthy names in the 3D printing community. Ultimachine is renowned for making high quality products and for their commitment to advancing Free Software, Libre Innovation, and Open Source Hardware.

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RAMBo v1.3 is built on the shoulders of the Arduino community, so hackers should consider this motherboard for additional projects beyond controlling a 3D printer. For more information about this feature-rich product, see the Specifications and Links sections of this product page.

Curious where the product's name comes from? This motherboard is a full remix of Ultimachine's popular RAMPS design, with the Arduino MEGA and stepper drivers all on one integrated PCB. Thus, the name (R)epRap (A)rduino-MEGA-compatible (M)other (Bo)ard (RAMBo) was born.

Parts Included

RAMBo electronics board

x3 Mechanical end stop wires

x2 Thermistor wiring with assembled plugs (thermistor not included)

x1 Six space screw terminal plug, black

x5 Two pin,pluggable connector

x6 1x4 housing/connectors

x1 1x2 housing/connectors

x3 Mechanical Endstops

USB cable


  • Designed and Manufactured by Ultimachine
  • Logic
    • Arduino MEGA compatible Atmega2560 and Atmega32u2 processors are compatible with all RAMPS class firmwares
    • Crystals for both usb and mcu (timing accurate to 10ppm)
    • 4 Thermistor jacks
    • All extra pins broken out on both processors (allows using the 32u2 for LUFA AVR programmer, etc.)
    • 2 channel SDRAMPS compatible SPI breakout
  • Motor Drivers
    • 5 A4982 1/8th microsteps motor drivers with 1,1/2,1/4,1/16 as options (2 connectors on Z for Prusa Mendel)
    • Digital Trimpot for stepper current control
    • Current limit on driver IC VCC to prevent permanent latchup
    • Microstep mode configured by MCU through firmware (no jumpers needed)
    • Test points for driver control signals
    • Step and Direction pins are on their own ports for synchronous movement capability
    • Extra driver ports broken out for up to 3 additional drivers (some of the motor extension pins are shared with max endstop and a pin allocated for SPI-SS extensions)
  • PWM DC outputs (Extruders, Fans, Etc.)
    • 6 outputs
    • Low resistance mosfets for cool running
    • Indicator led for each channel
  • Power
    • Three independent power rails
    • Heated Bed, 15A 12-35V
    • Extruders + fans and logic, 5A 12-35V (fuse can be exchanged for up to 10A capacity)
    • Motors, 5A 12-28V (fuse can be exchanged for up to 10A capacity)
    • Built in SMPS for 5V generation from 10V-26V Vin
  • PCB
    • 4 layer
    • 2oz copper on all layers
    • High quality, High temperature FR4-TG130 PCB
    • Gold ENIG finishing
  • Fuses
    • 2 user replaceable NANO2 fuses 
      • Part number: 0448005.MR 
      • F2: motors and on-board power supply 
      • F3: extruder heater + fan outputs and logic 
    • 1 user replaceable automotive fuse 
      • F4: automotive-type 15A ATO bladed fuse to for the heated bed
$ 350 00

RAMBo v1.3 Kit (with wires and connectors)

$ 350 00

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