ON 20090901@9:46:59 AM at page:
On a web page you were interested in at:
http://www.piclist.com/io/stepper/linistep/4axis3build.htm#40057.3795023148
James Newton[JMN-EFP-786] Published and replied to post 40057.3795023148

|Insert 'Those values really depend on your needs. Check out the <a href="http://www.piclist.com/techref/logic/555s.htm">555 page</a> for some guidance on selecting values that produce the frequency you want and look for the "Dr Calculus" applet from that page if you just want to plug in a frequency and get back an exact answer.' at: '<!-- 40057.3795023148 EOR -->'

<A TITLE="P-64.26.171.99" NAME="40057.3795023148">
</A> 
I forgot to order a 555 kit.  Really silly mistake, but now I need to get the components elsewhere.  I can't seem to find the specs for the resistors and capacitors in your kit.  Can you specify their values here so that others will know, too?
|Delete 'P-' before: '<!-- 40057.3795023148 EOR -->' but after: '<A TITLE="'.



ON 20090903@12:53:20 PM at page:
On a web page you were interested in at:
http://www.piclist.com/io/stepper/linistep/index.htm#40056.3952546296
James Newton[JMN-EFP-786] Published and replied to post 40056.3952546296

|Insert 'Try a different mode?' at: '<!-- 40056.3952546296 EOR -->'

<A TITLE="P-65.35.91.82" NAME="40056.3952546296">
</A> 
I have one linistepper I bought a year ago and finally built, quality parts and PCB. I just order 3 more last week. The only problem so far is the motors runs smooth one direction and has a little groan in the other direction swapped motor leads and it's not the motor, have not checked further, any ideas? Thanks Bill
|Delete 'P-' before: '<!-- 40056.3952546296 EOR -->' but after: '<A TITLE="'.



ON 20090927@2:12:53 PM at page:
On a web page you were interested in at:
http://www.piclist.com/techref/io/stepper/linistep/index.htm#
James Newton[JMN-EFP-786] edited the page. Difference:
http://www.piclist.com/techref/diff.asp?url=H:\techref\io\stepper\linistep\index.htm&version=18



ON 20090928@10:09:27 AM at page:
On a web page you were interested in at:
http://www.piclist.org/io/stepper/linistep/4axis2build.htm#40082.5734375
James Newton[JMN-EFP-786] Published and replied to post 40082.5734375 by servolock

|Insert 'First, please use the instructions at the <a href="/techref/io/stepper/linistep/4axis3build.htm">new page</a>. This page is for a prior version of this board. <P>The component values that are not specified on the schematic are either not critical (e.g. back EMF diode on the relay driver circuit) or depend on the users application (e.g. the component values in the 555 circuit). If we missed something other than those, on the current page, please do let us know. I'm happy to add values if doing so will not cause more confusion. <P>As far as clutter on the silkscreen, it seems readable and more information is better than less. If other people complain, we can reduce the markings on the next version.' at: '<!-- 40082.5734375 EOR -->'

<A TITLE="P-69.76.130.56" NAME="40082.5734375" HREF="mailto:servolock@gmail.com">servolock@gmail.com</A> <BLOCKQUOTE><A NAME="69.76.130.56">
</A> 
I wish the schematic had *all* the component values on the resistors and capacitors.  The silkscreen has some values that are missing on the schematic, and some other values are missing on both!  Really, values should be only on the schematic, not on the silkscreen (to reduce silkscreen's clutter.)</BLOCKQUOTE>

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ON 20090928@10:30:24 AM at page:
On a web page you were interested in at:
http://techref.massmind.org/techref/io/stepper/linistep/lini_tun.htm#39929.347662037
James Newton[JMN-EFP-786] Replied to post 39929.347662037 by jamwaffles

|Insert 'Just hook it up. The linistepper will regulate the voltage supplied to the motor to keep no more than 1 amp per phase flowing in each coil. However, that will require the power transistors to dissipate the rest of the energy as heat, so make sure you have REALLY good cooling (like a CPU cooler).' at: '<!-- 39929.347662037 EOR -->'

<A TITLE="213.106.83.50" NAME="39929.347662037" HREF="mailto:jamwaffles@googlemail.com">jamwaffles@googlemail.com</A>
    refers to
    <BLOCKQUOTE>
      <A NAME="213.106.83.50" HREF="http://www.google.co.uk/url?sa=t&amp;source=web&amp;ct=res&amp;cd=5&amp;url=http%3A%2F%2Fwww.kelinginc.net%2FKL23H51-24-8B.pdf&amp;ei=5Hj0SbuzGITMjAf4ws3ODA&amp;usg=AFQjCNH1kI3wG6yQnduWO05XgHhNAiWdJA&amp;sig2=0TTzka4I6sAJ3LkcJtrlMA"
	  TARGET="_top">http://www.google.co.uk/url?sa=t&amp;source=web&amp;ct=res&amp;cd=5&amp;url=http%3A%2F%2Fwww.kelinginc.net%2FKL23H51-24-8B.pdf&amp;ei=5Hj0SbuzGITMjAf4ws3ODA&amp;usg=AFQjCNH1kI3wG6yQnduWO05XgHhNAiWdJA&amp;sig2=0TTzka4I6sAJ3LkcJtrlMA</A>
      Dear linistep developer(s)<BR>
      <BR>
      I'd like to ask what modifications I'd have to make to the linistep circuit
      to drive Nema 34 steppers with a unipolar configuration (obviously, as your
      cool driver is only unipolar). The datasheet in the link includes the voltages
      and currents which are, if your lazy like me are, rated voltage: 4.32 volts,
      current/phase: 2.4A, resistance/phase: 1.8, inductance/phase: 3.3<BR>
      <BR>
      However, I want to run the steppers at 12V from an ATX power supply, so can
      you or someone tell me what I need to do to the linistepper circuit to make
      it drive my steppers at 12V<BR>
      <BR>
      thankyou for your time in reading this<BR>
      <BR>
      James
    </BLOCKQUOTE>