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We accept American Express, MasterCard, Visa, and Discover
for USA orders.
For more information or to order by phone, U.S. customers can contact us toll
free at 877-230-5270.
International customers may call us (not toll-free) at
314-521-8808.
To contact our sales department via email, send a request to
sales@stepperboard.com
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Assembled version of BS0710-USB
The BS0710-USB board is a complete Unipolar/Bipolar dual stepper
motor controller system which can be controlled from a computer using a USB
connection. It includes the capability of driving one or two stepper
motors, each of which being either unipolar (4-pole) or bipolar (2 pole).
This unit is a good choice for those designing products using linear
actuators, especially since the microstepping features will reduce noise
levels and can increase positional accuracy by a large amount.
The board is specified as allowing up to 1
amp per winding, with 6.5
to 15 volt motors supported when in single power supply mode. It also
supports a dual power supply feature, wherein the motors use a separate supply
from the logic circuits; in this mode, up to a 34 volt power supply may be used
for the motors. You will want to review
the
calculating motor current faq in order
to determine the current requirements for your motor.
Double Current Mode: The GenStepper and
PotStepper firmwares for our products now allow you to run one motor (instead of two)
at double the rated current of the board! For example, if you
purchase a BS0710 board, which can handle two 1-Amp motors (assuming that you
cool the board adequately), then that board
can now be configured by you to handle one 2-amp motor instead. Please
review the motor connections faq
for more information.
This board may be optionally configured to act as a serial router for our
product line, through use of the SerRoute firmware option. This option
replaces the stepper motor control with serial routing of up to five boards, 8
relay, and up to 4 TTL input operations. Please click here for more
information about the serial routing firmware.
Similarly, this board may be optionally configured to operate in a NC
(numerically controlled) process environment, through use of the NCStepper
firmware option. This firmware tightly links the two motors together,
providing for easy "exact straight line" and simplified arc/circle drawing.
Please click here for more information about the
NCStepper firmware.
Key Benefits
The BS0710 has the following key capabilities when using
the GenStepper firmware:
 | USB communications with a host computer may be used to control the board. |
| Alternatively, TTL-Serial communications may be used to control the board
using some external microprocessor, such as a Parallax Basic Stamp
TM. |
| Up to two stepper motors may be independently controlled at one time. |
| Each motor may be either 4-pole Unipolar or 2-pole Bipolar. |
| Each motor may draw up to 1.0 amps per winding. Note if more than 0.6 amp motors are used, then the board
requires external fan-based cooling (10 CFM is a reasonable amount); otherwise the board can overheat and fail
if the motors are left enabled for long periods of time. |
| If only a single motor is connected to the board, some of our firmwares
support configuration of the board and wiring of
the motor for double current mode. This allows you to
handle a single motor with up to 2 amps/winding. Again, use of a cooling fan is usually required when operating in double
current mode. |
| Limit switches may be used to automatically request motion stop of
either motor in either direction. |
| Rates of 1 to 62,500 microsteps per second are normally supported. |
| Step rates are changed by linearly ramping the rates; the rate of change
is independently programmed for each motor, and can be from 1 to 62,500
microsteps per second per second. |
| All motor coordinates and rates are expressed in programmable microstep units of
1/2 to 1/64 of a full step. Once the base step size is selected, changing stepping modes between half, full and micro does not change
any other value other than which winding pairs may be driven at the same
time. |
| Motor coordinates are maintained as 32 bit signed values, and thus have
a range of –2,147,483,647 through +2,147,483,647. |
| Both GoTo and Slew actions are fully supported. |
| Four modes of stepping the motor are supported:
 | Half steps (alternates 1 winding and two windings enabled at a time),
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| Full power full steps (2 windings enabled at a time) |
| Half power full steps (1 winding enabled at a time) |
| Near-constant-current microsteps (each from 1/64 to 1/2 of a full step) |
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| A TTL "busy" signal is available, which can be used to see if the motors
are still moving. Note that this information is also available from the
serial communications subsystem. |
| Simple control of the motors may be done by switch closure: i.e., each
motor can be told to slew left or right, or to stop by simply grounding some
input lines. Similarly, the rate of motion can be controlled via stepping
through a standard set of rates via grounding another input. |
| Complete control of the motors, including total monitoring of current
conditions, is available through the 2400 to 19,200 baud serial connection
(by default, this is shipped configured for 9600 baud; other rates may be
requested at the time of ordering the product). |
| An additional mode is available which allows an external computer to
directly generate step sequences on the motor control lines. Up to 62,500 microsteps per second may be requested.
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| The system can be configured to operate in 1/2 power mode, wherein it
reduces the power to all windings by 1/2 for all actions. This can be
used to "overvoltage" a motor, in order to generate more torque. |
| Runs off of a single user-provided 6.5 to 15 volt DC power supply.
May also be configured using a split supply, wherein the motor runs off of a 5
to 34 volt DC power supply, while the logic circuit runs off of a 6.5 to 15
volt supply. |
| Theoretically, an unlimited number of boards can be controlled via one
serial line, if the SerRoute product is used. |
Click Here for the full
PDF manual for the BS0710 with the GenStepper firmware.
Click
here if you need to download the current version Adobe Acrobat Reader from Adobe's site.
We accept American Express, MasterCard, Visa and Discover for orders from
the USA. For international orders, we require wire transfers.
All products come with a 30 day satisfaction guarantee, and the assembled products come with
a 30 day return to factory warranty. Please
click here for the details...
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Peter
Norberg Consulting, Inc.