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IndustryArena Forum > OpenSource CNC Design Center > Open Source Controller Boards > New Linistepper design, PMinMO compatible, kit sale.

View Poll Results: What are the most important driver features to you?

Voters
102. You may not vote on this poll
  • Open source firmware and board layout freely available

    72 70.59%
  • Low parts-count and cost for home building

    34 33.33%
  • Low kit price to get running on a budget

    27 26.47%
  • Smooth / low resonance modes for better performance

    43 42.16%
  • Faster / more reliable operation w/ low cost surplus motors

    31 30.39%
Multiple Choice Poll.
Page 12 of 12 2101112
Results 133 to 142 of 142
  1. #133
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    May 2007
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    hello james

    what if one has a high inductance motor(13mH), current 2amps/phase and uses high voltages like 80-100volts to increase motor rpm = higher IPM (travel-cnc), can linistepper be used at these voltages or what should one do to getting the drive working at these spec.?

    thanks

  2. #134
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    Just got another shipment of Linistepper kits in, so we have lots to ship! Check it out:
    linistepper.com
    what about shipment time ? is it under 1 week ?

    thanks

    sahil

  3. #135
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    Quote Originally Posted by sahilkit View Post
    hello james

    what if one has a high inductance motor(13mH), current 2amps/phase and uses high voltages like 80-100volts to increase motor rpm = higher IPM (travel-cnc), can linistepper be used at these voltages or what should one do to getting the drive working at these spec.?

    thanks
    Higher voltage will give you a higher step rate, but even 80 volts is well past the 36 volt rating of the Linistepper and that amount of power (80*2=160 watts) is more than the Linisteppers maximum 100 watt rated power. For that sort of power, you really need to go to a geckodrive. At $61/driver, the Gecko is the next step up, but one you will need to take for that setup. The Linistepper can certainly run that motor at 2 amps, and up to 36 volts with a CPU fan for a heatsink on the drive transistors, but your IPM may be less.
    James hosts the single best wiki page about steppers for CNC hobbyists on the net:
    http://www.piclist.com/techref/io/steppers.htm Disagree? Tell him what's missing! ,o)

  4. #136
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    Quote Originally Posted by sahilkit View Post
    what about shipment time ? is it under 1 week ?

    thanks

    sahil
    Not to India, no. I would expect the postal service to take up to 3 weeks to deliver outside the USA. Inside the USA, less than a week would be very likely, most shipments just take a couple days.
    James hosts the single best wiki page about steppers for CNC hobbyists on the net:
    http://www.piclist.com/techref/io/steppers.htm Disagree? Tell him what's missing! ,o)

  5. #137
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    Apr 2007
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    1876
    Hi James, I have some of the V1 linistepper board / kits from you and like them just fine. I have always been curious though, have you considered to sell these as a finished, assembled driver ? That might be what holds off some people from using them.

    My soldering skills are very - basic, so I used solder paste, which helps a lot compared to wire type solder, in fact it is so much better, I recommend it for anyone new to soldering.

    Once I reached that point though, I found that I can solder 1206 size SMT components more easily than these older style wire based ones. ( I just reflow it all in a frying pan )

    Thanks for offering such a nice hobby project kit and such a low price. Of course more power is always of interest.

    Take care,

    Harry

  6. #138
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    Hi Harry,

    Thanks for the complement and suggestions.

    The way I look at the Linistepper is that the people who can appreciate it are the same people who don't mind putting together a kit. The people who want an assembled and tested, ready to go, out of the box driver most likely don't appreciate the fact that the Linistepper is a brilliant design and is easy to repair if damaged. If you like the fact that you can repair it, then you don't mind building it. If you can't imagine being able to repair something, you don't want something you have to build. I hope that makes sense.

    Now, your point on SMT soldering is very well taken; I totally agree with you and would love to see a SMT version of the driver (or just about any other kit) but... you and I are among the very few who realize how easy the larger SMT components can be to solder. If you mention SMT around most hobby electronics people, you can see them flinch! So as long as we sell it as a kit, it will probably be through hole.

    I've thought about doing some of my boards (e.g. the 4 axis) in such a way that it can be built either through hole OR SMT. In fact, most of the components on the board can be done either way. e.g. you can solder a SMT resistor between the pads for the through hole resistors.

    And you really can't get PCB's assembled at a reasonable price unless you can use SMT components anyway.

    Well, it's interesting to think about, and thanks for your interest. As to more power, have you seen the SLAm stepper:
    techref.massmind.org/techref/io/stepper/SLAm/SLAm_bld.htm ?

    Best Wishes,

    James.
    James hosts the single best wiki page about steppers for CNC hobbyists on the net:
    http://www.piclist.com/techref/io/steppers.htm Disagree? Tell him what's missing! ,o)

  7. #139
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    Hi James,

    I would ask if possible I use chip IC SLA4060 which have 4 NPN Darlington Transistors 5A instead of TIP122 Transistors ? if yes ,do i need make any modification for Linistepper V2 driver circuit?

    Note :
    I have stepper motor 1.2A/Phase

    Datasheet for SLA4060e
    http://www.sanken-ele.co.jp/en/prod/...f/sla4060e.pdf

    Thank you

  8. #140
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    Quote Originally Posted by bb_ss_oo View Post
    Hi James,
    I would ask if possible I use chip IC SLA4060 which have 4 NPN Darlington Transistors 5A instead of TIP122 Transistors ? if yes ,do i need make any modification for Linistepper V2 driver circuit?
    I think Roman would have to answer that question. I'm not an analog power engineer. My best guess is that it would work ok for full and maybe halfstep modes, but that the microstepping in the PIC is tuned for the particular linear curve of the TIP122's and so the PWM tables would need to be edited and much testing done to get sequential rotation in those modes.

    TIP122's don't cost that much do they?
    James hosts the single best wiki page about steppers for CNC hobbyists on the net:
    http://www.piclist.com/techref/io/steppers.htm Disagree? Tell him what's missing! ,o)

  9. #141
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    Mar 2007
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    hello Mr James,

    I have idea to connect linistepping controller "PIC16F628" to chopper unipolar SLA7024 , so it possible to remove the extra componet like resistor and diodes connecting to PORTB from B4 to B7 and just use PORTB PIN's from B0 to B3 only to generate full step / Half step sequence depend on Step and direct and mode for Half / FUll step ...only.., what i need to modify in the code to get thats ???

    Thanks you

  10. #142
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    hello bb_ss_oo,

    I strongly doubt that will work. Feel free to try, but please don't call it a "Linistepper"? Thank you! To answer your code question, I don't see why you would change the code at all. Just don't jumper the mode pins to request microstepping.
    James hosts the single best wiki page about steppers for CNC hobbyists on the net:
    http://www.piclist.com/techref/io/steppers.htm Disagree? Tell him what's missing! ,o)

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