Assembled RAMBo v1.4 Kit with LCD Harnesses
This all-in-one 3D printer motherboard is made by UltiMachine using an Arduino MEGA microcontroller board, and comes equipped with integrated stepper drivers, built in fuses, and more. This direct replacement for the RAMBo used in the LulzBot TAZ 6 and includes the two wiring harnesses used to connect to the Graphical LCD Controller.Product Alert (3)
Please contact us for help before purchasing this component if you own a LulzBot TAZ 6 and would like assistance within the standard warranty period.
RAMBo v1.4 is only compatible with the LulzBot TAZ 6 3D Printer. LulzBot TAZ 5 and earlier 3D printers are only compatible with RAMBo v1.3.
- Product Alert:
A new Graphical LCD Controller Cable is included due to the differences between the connectors on the RAMBo v1.3 and earlier and the RAMBo v1.4.
Since RAMBo v1.4 is built on the shoulders of the Arduino community, makers and hackers should consider using this motherboard for additional projects beyond controlling a 3D printer.
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 & Specifications
One (1) RAMBo electronics board
Two (2) Graphical LCD controller harnesses
Designed and Manufactured by UltiMachine
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
5 A4982 1/8th microsteps motor drivers with 1,1/2,1/4,1/16 as options (2 connectors for Z-axis)
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.)
Low resistance mosfets for cool running
Indicator led for each channel
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
2oz copper on all layers
High quality, High temperature FR4-TG130 PCB
Gold ENIG finishing
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
- Resources & Documentation