This all-in-one TAZ 6 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. The RAMBo 1.4 board is the 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.
Works with: LulzBot TAZ Workhorse, LulzBot TAZ 6
Does not come with pre-installed firmware
Parts Included
One (1) RAMBo electronics board
Two (2) Graphical LCD controller harnesses
Specifications
Designed and Manufactured by UltiMachine
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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
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Motor Drivers
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)
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PWM DC outputs (Extruders, Fans, Etc.)
6 outputs
Low resistance mosfets for cool running
Indicator led for each channel
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Power
Three independent power rails
Heated Bed, 15A 12-35V
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