ON 20080908@11:01:09 AM at page:
http://www.piclist.com/io/stepper/linistep/index.htm#39698.8578009259
James Newton[JMN-EFP-786] Published and replied to post 39698.8578009259 by tim

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<A TITLE="P-69.149.97.14" NAME="39698.8578009259" HREF="mailto:tim@nratonpass.com">tim@nratonpass.com</A> asks: &quot;<A NAME="69.149.97.14">
</A> 
I want to use a 3.6 volt 4 amp stepper motor.  Would I need to change the 1 ohm to a .25 ohm?<BR>
<BR>
thanks<BR>
Tim&quot;

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ON 20080909@7:10:27 PM at page:
http://www.piclist.com/io/stepper/linistep/faq.htm#39700.7847337963
James Newton[JMN-EFP-786] Published and replied to post 39700.7847337963 by steel2chips

|Insert 'Assuming you use a standard 200 step/rev motor, half stepping mode will give you 400 steps per revolution. The linistepper will support up to 3600 steps per revolution, so 400 is no problem.' at: '<!-- 39700.7847337963 EOR -->'

<A TITLE="P-99.128.108.179" NAME="39700.7847337963" HREF="mailto:steel2chips@yahoo.com">steel2chips@yahoo.com</A> asks: <BLOCKQUOTE><A NAME="99.128.108.179">
</A> 
I'm interested in converting my Taig Mill to micro-stepping, but would like to retain the 400 step/rev resolution.  Is this mode  possible with linistep?<BR>
Thanks,<BR>
Norm</BLOCKQUOTE>

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ON 20080911@7:43:15 PM at page:
http://www.piclist.com/io/stepper/linistep/lini_wks.htm#39699.63375
James Newton[JMN-EFP-786] Published and replied to post 39699.63375 by edgey01

|Insert 'The PIC regulates the current by changing it's outputs to the analog circuit. The circuit itself reacts to the changes in the motor and corrects the bias of the power transistors to compensate.' at: '<!-- 39699.63375 EOR -->'

<A TITLE="P-202.59.16.106" NAME="39699.63375" HREF="mailto:edgey01@gmail.com.au">edgey01@gmail.com.au</A> asks: <BLOCKQUOTE><A NAME="202.59.16.106">
</A> 
can you explain how the sense resistors work, from the circuit it would appear the are current limiting only, how is the pic able to sense the apms/volts?</BLOCKQUOTE>

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ON 20080922@11:33:14 AM at page:
http://www.piclist.com/io/stepper/linistep/lini_tun.htm#39712.6883217593
James Newton[JMN-EFP-786] removed post 39712.6883217593

|Delete '<A TITLE="P-75.83.116.110" NAME="39712.6883217593" HREF="mailto:tony34306@aol.com">tony34306@aol.com</A> asks: <BLOCKQUOTE><A NAME="75.83.116.110">
</A> 
Below is a bi-polar stepper motor is Iw=2 ampere, Rw=1 Ohm.<BR>
It is a: ISERT zweiphasenschrittmotor 1.8 grad.<BR>
Art.-Nr.3455 ISERT ELECTRONIC.<BR>
WZ6 10479 A2405-9212-A2 Made in japan.<BR>
<BR>
Im new to this but will your controller work with my stepper motors?  My CNC router also has limit switches will I be able to conect them? <BR>
If your controller work I may purchase 3.  Thanks Tony<BR>
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ON 20080923@4:55:57 PM at page:
http://www.piclist.com/io/stepper/linistep/lini_wks.htm#39714.2486342593
James Newton[JMN-EFP-786] Published and replied to post 39714.2486342593 by agalliazzo

|Insert 'The current limit resistors are R1 and R2. R14, etc...are the control / PWM resistors.' at: '<!-- 39714.2486342593 EOR -->'

<A TITLE="P-151.65.7.186" NAME="39714.2486342593" HREF="mailto:agalliazzo@gmail.com">agalliazzo@gmail.com</A> asks: <BLOCKQUOTE><A NAME="151.65.7.186">
</A> 
If I have a look to the schematic image http://www.piclist.com/images/member/RB-ezy-Q33/circuit.gif i see R14-R15-R16-R17 in series with the base of the four TIP122... Is it the right way to connect these components? In the costant current explanation it seem that the resistors should be connected to GND... Is something wrong in my idea or it's only a second "version" of the current controller circuit?</BLOCKQUOTE>

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ON 20080924@2:34:50 PM at page:
http://www.piclist.com/io/stepper/linistep/lini_tun.htm#39715.4535416667
James Newton[JMN-EFP-786] removed post 39715.4535416667

|Delete '<A TITLE="P-75.83.116.110" NAME="39715.4535416667" HREF="mailto:tonyh514@yahoo.com">tonyh514@yahoo.com</A> asks: <BLOCKQUOTE><A NAME="75.83.116.110">
</A> 
I forgot to include the number of wires in my stepper motors<BR>
It has 8 wires, 4 coils.<BR>
Currently connected 2 coils in parallel, resulting in 2 coils.<BR>
My understanding is Eight wire stepper motors can be run with either Unipolar or Bipolar driver electonics. <BR>
my motors are:<BR>
<BR>
ISERT zweiphasenschrittmotor 1.8 grad.<BR>
Art.-Nr.3455<BR>
ISERT ELECTRONIC.<BR>
Iw=2.0 A Rw=1.0 Ohm <BR>
WZ6 10479<BR>
A2405-9212-A2<BR>
Made in japan.<BR>
<BR>
Can I use your controller for this motor? I'm new at this<BR>
Thanks Tony<BR>
<BR>
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ON 20080930@2:59:43 PM at page:
http://www.piclist.com/io/stepper/linistep/lini_tun.htm#39720.4356597222
James Newton[JMN-EFP-786] removed post 39720.4356597222

|Delete '<A TITLE="P-72.45.125.139" NAME="39720.4356597222" HREF="mailto:gblack@pioneer-sys.net">gblack@pioneer-sys.net</A> asks: <BLOCKQUOTE><A NAME="72.45.125.139">
</A> 
I have an Oriental Motor Co., Vexta 2-phase stepper motor, Model PK268-E2.0A-C3, 1.8 deg/step, rated at DC 4.5V and 2 A.  Will your controller work with this?  It is for intermittent use (ie. 4 times per day for 5 minutes).  Is there a way to shut off all power awaiting the next cycle (it is an off-grid, remote location so power is very scarce & expensive)?  You caution about tuning to hot system.  In our case, it will be cold.  Other issues?  Accuracy?  Lost steps?</BLOCKQUOTE>
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