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RUMBA

Release status: Working

Sabastian Prosa, who was 19 at the time of the 2012 collision, was sentenced on Tuesday to five years in prison. He is also banned from driving for eight years. This architecture, called PROSA, consists of three types of basic holons: order holons, product holons, and resource holons. Ming facilities were used to implement device drivers.

Description	R.eprap U.niversal M.ega B.oard with A.llegro driver
License
Author
Contributors
Based-on
Categories
CAD Models	Altium
External Link

Drivers Propane

5Motor Driver
- 5.1Microstepping
11RUMBA Wiring
13JTAG & ISP (for firmware developer)
16Troubleshooting
- 16.1USB connection
- 16.2RepRapDiscount Smart Controller

Summary

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.

There is also a new variant offered by Makerbase the RUMBA+ .The RUMBA+ offers some newer features.

The most notable being a port for use with touchscreens (TFT) controllers.

There is little support from Makerbase so there needs to be a page adressing setup and use of the RUMBA+.

RUMBA board
RUMBA PCB hole spacing dimensions
RUMBA schematic
RUMBA schematic EXP3 connector
RUMBA PCB all layer

Safety Tip

Caution
Once you start putting electricity into your RepRap - even at just 12 volts - you have to take basic, common sense precautions to avoid fires.
Just in case these fail, test your workshop smoke detector. Got no smoke detector? Get one!

RUMBA USB Driver for Windows

NEW : Easy driver setup for Windows 8/7/Vista/XP 32 and 64 bit
File:RRD RUMBA TAURINO DriverSetup.zip

CLASSIC: (can cause problems with Windows 8 and Vista/7 64bit, use the easy method from above instead)
When you attach RUMBA for the first time to a Windows computer you might need to provide a driver (INF file).
File:RRD-RUMBA USB DRIVER.zip

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

Motor Driver

Stepper switches
Stepper driver attached
Stepper drivers ok/wrong
Stepper driver back

Microstepping

Some versions of the Rumba contain dip switches located underneath the driver boards, but current versions may contain a row of 3 jumpers.

with DRV8825

1	2	3	step mode
0	0	0	Full step (2-phase excitation) with 71% current
1	0	0	1/2 step (1-2 phase excitation)
0	1	0	1/4 step (W1-2 phase excitation)
1	1	0	8 microsteps / step
0	0	1	16 microsteps / step
1	0	1	32 microsteps / step
0	1	1	32 microsteps / step
1	1	1	32 microsteps / step

sources:

from the ic manual.http://www.pololu.com/file/download/drv8825.pdf?file_id=0J590

with A4988

1	2	3	step mode
0	0	0	Full step
1	0	0	1/2 step
0	1	0	1/4 step
1	1	0	8 microsteps / step
1	1	1	16 microsteps / step

Sources:

Motors

Motor on pin header
Motor on screw terminal

Note- the commonly used DRV8825 boards (often purple) using the TI DRV8825 chip have a different motor pin out than the A49xx and similar. The silkscreen of A1 B1 B2 A2 matches the A49xx boards. The DRV8825 uses the format of A1 A2 B1 B2, so the coils should be wired together in pairs. This leads to some confusion.

Further, for this user, the nomenclature of 1A 1B 2B 2A was somewhat confusing at first. It is more commonly annotated as I have written it previously (A1 B1 B2 A2) or as A and A-bar (an A with a bar over the top) for A1 and A2 respectively.

Endstops

Endstop cable
Multiple endstop cable

Thermistors

Th

Drivers Prosa