The MB3001 MechaBlox card
is a complete high performance unipolar stepper motor controller with onboard
micropprocessor control and flexible position sensor interfaces.
Based upon Allego Microsystem's
SLA7032 Unipolar Stepper Motor Controller Chip, the MB3001 MechaBlox card is
high performance and simple to use.
The MB3001 is part of the Mechablox system. It can be used alone, or combined with
additional MechaBlox boards for more complex applications.
Small in size 2.8 x 2.8in(70mmx70mm), but big in performance, The MB3001 is capable of delivering
programmable drive currents up to 1.5 Amp per phase.
The MB3001 uses a Pulse Width Modulated "chopper" drive. It get's the extra performance you
need out of your stepper motor without the inefficiency and excess heat of bulky "RL" drives
using expensive forcing power resistors. Power level is software controlled via a 6bit DAC,
giving a wide range of running torque settings, and as well as holding torque settings.
The QUAD outputs of the MB3001 are semi-independent (arranged in two channels of two drivers)
Step sequencing is not hardware encoded - all phase drive methods are by software control.
This allows for experimenting with different drive methods such as Wave-Drive, and Half Stepping.
In addition the The MB3001 can be used to drive individual solenoids, relays, unidirectional DC motor
etc...
The MB3001 has three complete digital sensor interfaces with source power and signal
conditioning, compatible with slow level changing photo-interrupters, Hall effect switches,
and reed switches. Typical use for these interfaces would be an step index indicator,
and left and right limit detection.
In addition, one unbuffered analog input to the 10 bit ATmega8 A/D converter is provided.
Provision is made on the PCB to add a bias resistor to support a Thermistor for temperature
or to source VCC to a external potentiometer.
For even a quicker start, a visual interface control program for Microsoft Windows,
MB3001 Demo Control Program V1.0 is available free.
The MB3001 Demo Control program allows complete control of all functions of
the MB3001 from the computer desktop. Just point and click. The demo program includes
a display window which shows what is sent to the MB3001, and the MB3001's response back.
It is a great way to see and learn how to the M34001 unit is controlled via its serial
interface.
The MB3001 comes ready to use, preprogrammed with MechaView software which supports
both simple standalone RS232C interface applications, or more complex networked RS485.
The MB3001 comes with all software source code under the GPL license. The MB3001 can be reprogrammed
using the inexpensive Atmel AVRISP device and free Atmel AVR Studio software (available from
www.atmel.com) for teaching, experimentation or other custom applications.
| Specifications
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CPU-
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16-mHz Atmel ATMega8
8-kbytes Program Flash Memory
1-kByte Sram
512-bytes EEROM
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Motor Driver-
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Allegro Microsystems SLA7032
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Output Current-
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Programmable 6-bit DAC current control
-from 0 up to 1.5-A per phase¹<
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Hold Current Control-
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Running and Hold power are independently programmable, and
automatically switch.
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Pulse Rate-
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Pulse rates up to 30-ksteps/sec¹
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Acceleration/Deceleration-
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Programmable Trapezoid acceleration/deceleration curve.
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Step Modes-
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Full Step, Half Step, Wave Drive.
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Motor Connector-
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6 pin Molex 22-23-2061 (KK© series)
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Size-
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70mm x 70mm x 12mmm
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Com Interfaces-
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RS232C, RS485(half duplex), SPI Interface, TWI (I²S), One wire Interface.
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Programming interface-
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Supports 10pin AVR serial programming interface
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Sensor Interfaces-
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Three Optical/ Hall Effect/ Mechanical Switch compatible interfaces with analog
Schmitt Trigger Comparator.
One general purpose Digital or Analog input to 10bit
ADC.
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Input Power-
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8-30VDC at 20mA (not including motor current).
Input power, and individual motor phase fuses provided
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Accessories-
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Comes with RS232C Com Cable MB1907-001 and
Power cable MB1907-002
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Warranty
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90 Day Limited Warranty
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Download Manuals-
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MB3001 Hardware Manual
MechaView for MB3001 Manual
MB3001 Demo Control Program V1.0
MB3001 Demo Control Program Manual
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Price-
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Introductory price - $89.95
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In stock?-
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Yes
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¹note-
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actual achievable performance is dependent upon the motor selection and drive mechanism's
mechanical properties.
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McGourty Associates does not assume any responsibility for use of any circuitry described,
no circuit patent licenses are implied.
McGourty Associates reserves the right at any time without notice to change product
specifications as may be required to permit improvements in the perfomance, reliability,
or manufacturability.
McGOURTY ASSOCIATES’ PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN
LIFE SUPPORT DEVICES OR SYSTEMS.
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