RUMBA (R.eprap U.niversal M.ega B.oard with A.llegro driver)

The RUMBA board 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. The RUMBA board 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, 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 (not included) 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