RUMBA Board for 3D printer

RUMBA

R.eprap U.niversal M.ega B.oard with A.llegro driver - RUMBA is a feature rich all-in-one electronics solution for Reprap and other CNC devices.

It features an onboard ATmega2560. Its six motor outputs are powered by Pololu pin compatible stepper drivers.

The board features a developer friendly expansion port supporting giving access to all unused I/O, ADC and I2C pins.

RUMBA is designed to be flexible in the user's power source availability, allowing any power supply from 12V-35V.

Features

• compact size: 135mm x 75mm

• fully integrated all in one solution:
  • Arduino 2560-R3 compatible (works with Sprinter, Repetier-Firmware, Marlin out of the box)
  • ATmega16U2 (with enhanced firmware) for high speed USB serial connection (up to 2MBit)

• UNIVERSAL POWER:
  • can be used with 12V-35V for motors / heated bed
  • integrated high precision power regulators (DC/DC) for:
  • 12V (FAN/Light/...) and
  • 5V (ATmega2560/Logic)
  • power input selector for ATmega/logic (stand alone or power from USB)

• easy DISPLAY + SD-CARD connector:
  • RepRapDiscount SmartController compatible pin header on board

• up to 6 motor driver with easy micro stepping setup (micro switches) which can be used for:
  • TRIPLE extruder
  • DUAL Z driver and DUAL extruder
  • ...

• 5x temperature ADC connectors for thermistors:
  • e.g. 3x extruder thermistor + 1x heated bed thermistor + 1x chamber thermistor

• 5x PWM capable power mosfet outputs (3 with voltage selector for MainPower/12V):
  • e.g. 3x (MainPower) extruder heater cartridge/power resistor + 1x (12V) fan + 1x (12V) light

• 1x PWM capable power mosfet with extended cooling area for heated bed

• 6x end stop connectors with power supply
  • Xmin/Xmax/Ymin/Ymax/Zmin/Zmax
  • can be used for mechanical, opto, hall, ... end stops

• screw terminals *and* pin header for easy motor connection:
  • can be used with existing 4 pin Molex plug on motor cable
  • easy to attach cables without plug

• USB connector and USB pin header (useful when mounting in a small box)

• Power and ALL unused pins available on EXP-3 feature connector:
  • +5V and +12V
  • 2x ADC
  • 2x PWM I/O
  • 4x I/O
  • I2C

• full JTAG support
  • JTAG can be used during full operation (no shared pins)
  • easy to develop/debug new or optimized firmware using Atmel Studio

Links:

• Wiki

RUMBA Wiring

Wiring plan based on available information, may contain wrong information ! / recheck necessary.

A different version of RUMBA has a separate COM port 4-pin block (RX/TX/GND/+5) interior of the 16U2. Need picture and docs.