Copyright (C) 1986-2008 by Daniel H. Hudgins, All Rights Reserved.

No part of "This Web Site" (HTML document), including associated files, may be: distributed, sublicensed, transmitted, copied, archived, mirrored, modified, bundled, embedded, sold, given away, rented, loaned, or shared in any form without express written permission in a formal Vendor agreement contract dated and signed in ink obtained directly from Daniel H. Hudgins by registered postal mail. All agreements for permission to distribute expire after a period no greater than one year from the date of the signing of the agreement by Daniel H. Hudgins. See the current "EULA" for information regarding limited copying and storage for the purpose of "Beta Testing" "This Web Site."

To view or use the current version of this Web page you may need to reload or refresh the display of this page by your browser. Just clicking on the browser's [Reload] or [Refresh] icon may not be enough to insure that all of the page's most current contents have been cached and displayed. Some browsers may have additional commands to help display the page's most current contents such as: holding down the [Shift] key and clicking on the [Reload] icon, holding down the [Control] key and clicking on the [Refresh] icon, holding down the [Control] and [Shift] keys and clicking on the [Refresh] icon, pressing the [Control] and [F5] keys, pressing [Control] and the [R] key, or some other combination of keys or clicks. Check to see which commands your HTML browser uses to load the most current page contents into its cache and then to display them onto the screen.

This Web site is dedicated to the thousands of "users" of my programs, those who have helped test my programs over the last 22 or so years, and especially those who shared their experiences with me.

You must read this notice: This is a licensed Web site (HTML document and associated files). You must read and agree to be legally bound in contract by the Terms of Use and conditions given in the End User License Agreement ("EULA"), Legal Notices, Instructions, Warnings, Disclaimers, and all other text in "SECTION: 0" of "This Web Site" (HTML document and associated files) before reading or using any of the information, software programs, and or files, contained in, linked to, and or associated with, "This Web Site" (HTML document and associated files). Any use or "Beta Testing" of "This Web Site" constitutes your acknowledgment of your full agreement with the current End User License Agreement ("EULA") and your decision to have this current license supersede all prior and contemporaneous agreements and understandings. Information and files in "This Web Site" (HTML document and associated files) have been placed here so that long time users of "The Author's" programs DANCAD3D.COM (tm) , DANCAM.EXE (tm) , or DANPLOT.EXE (tm) could help proofread the text of the documentation files or screens displayed, and also help test data files, example files, and or any software programs that might be made available from time to time, to aid "The Author" in finding mistakes, bugs, and other errors, omissions, defects, mistakes, and faults. Everything in "This Web Site" (HTML document and associated files) is "Beta Test", "Beta Code", Experimental, Preliminary, requires proofreading, or is being evaluated for possible revision, and is NOT warranted to be free of defect. To help "The Author" report any bugs, foul-ups, defects, or mistakes that you find, see "SECTION: 8" for instructions. "This Web Site" (HTML document and associated files) and all other files and programs by Daniel H. Hudgins are made available "AS IS" without warranty of any kind express, expressed, or implied. All offers and specifications are subject to change or discontinuation without notice of any kind. Please read "SECTION: 8" of "This Web Site" (HTML document and associated files) before trying to contact "The Author."

The pages in Section 5 mix text, photographs, and other illustrations or media in the hope that you might better understand the descriptions of how to do things that relate to testing or using the programs. Because of space limitations, the size of the graphic files associated with any down-load-able or compact distributed edition of this document might need to be small or absent. Likewise if this document is posted on the Web I might need to keep the graphic files small for two reasons, 1) the whole document will need to fit in the Web space that I can afford, 2) smaller graphic files load faster over a modem. If I someday make this document available as a CD-ROM there might be room for various sizes of each graphic file, so that you could possibly change the default size graphic files if you install the whole HTML document on your hard disk. To change the default size of the graphic, you might be able to copy the file with the same name from the sub-directory of the size you want to use to the directory with the *.htm files in it on your harddisk. The size of the graphic files will probably be indicated by the approximate horizontal number of pixels in the image before it was cropped, since I may crop some of the images to save file space. For example, files in the "320" sub-directory would be about 320 pixels wide, these might have the same filename as the files in the "160" sub-directory allowing you to copy one or the other to overwrite the same graphic filename in the default directory. The default graphic size will depend on the type of graphic file used, photographs will probably default to about 120 pixels wide, and drawings to about 800 pixels wide, but the size of files will probably be different in various distributions.

My BIPOLAR2 stepper motor driver board was designed to operate three wire 72RPM sync motors as stepper motors. It can sometimes also be used operate many other small to medium size two or four phase stepper motors with 3, 4, 5, 6, or 8 leads, provided the current requirements and other factors allow the components to safely operate within their manufacture's rated SOA, i.e. the components safe operating area for maximum safe working current and voltage.

The BIPOLAR2 board includes a current booster to increase high speed torque for some motor types, but these parts can be omitted to reduce the cost if the booster is not desired.

The parts list and foil patterns where originally on the program disks as part of the v2.6 distribution. The information on the BIPOLAR2 circuit here is transitional and relates to some legacy issues. Information here that relates to the BIPOLAR2 circuit is incomplete since it has not been fully revised at this point for use with the v2.7 distribution.

More general information for configuring and hooking up my CAM programs is in the revised CAMPLOT.DOC text in SECTION: 3.2.0.0, you should also read all of that text before connecting any stepper motor or servo motor driver circuits to your computer. See also the various files included in the distribution of the programs you currently have.

SECTION: 5.40.10.1 BIPOLAR2 top, bottom, and front view photos.

SECTION: 5.40.10.5 BIPOLAR2 circuit particulars and parts list.