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Type: Posts; User: ESjaavik

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  1. I'm not concerned about bitrate. Most drivers can...

    I'm not concerned about bitrate. Most drivers can output max 300KHz anyway. The concern is that the cabinet is a hostile EMC environment. Check the theory on why a twisted pair is used in almost...
  2. Quote: "Patch cable = UTP cable with RJ45...

    Quote: "Patch cable = UTP cable with RJ45 connectors on it! We're using UTP cable and yes, it's flexible enough It's a CAT5 UTP cable, if you think in it deeper, it is used in 100Mbit ethernet...
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    OK. I know how you feel as I also installed Linux...

    OK. I know how you feel as I also installed Linux and had many fights before giving up. That was also "way back". But installing BDI RC46 was so easy I could not believe it. Boot CD, click on install...
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    You're right. But those are easy to debug. Add to...

    You're right. But those are easy to debug. Add to that the possibility that the step signals have jitter on them, getting worse at higher speeds. Alas not so easy to debug even with a good...
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    @Scud: You should check why it was damaged, or...

    @Scud: You should check why it was damaged, or the new one might go the same way. I looked at the schematics, and you should check the diodes D1-D8. Do not use slow rectifier type diodes in these...
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    @Ger: Sorry I confused G100 with the "old"...

    @Ger: Sorry I confused G100 with the "old" Geckos. Just went over and browsed through the manual for it, and from that it looks like the G100 is the hardware that can be used to implement a...
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    The Gecko might do this, but it does not know...

    The Gecko might do this, but it does not know what the other axes are doing.
    So the path will not be correct unless moving only in a direction parallel to one of the axes. A move in one axis must be...
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    Aubrey wrote: We are dealing with the Micro$oft...

    Aubrey wrote: We are dealing with the Micro$oft Window$ operating system.
    Then 2 sentences later:
    2. Come up with a solution to ensure that we, the humans, are not to be screwed around by the...
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    Bump! Please ask around if you know someone...

    Bump!

    Please ask around if you know someone hwo might have this info.

    Einar
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    AC Servo? If it's a Permanent Magnet type it...

    AC Servo?
    If it's a Permanent Magnet type it must be run synchronously. You could probably make it run using a VFD, but not using it's full torque. Reason is that the VFD does not know if the motor...
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    Your rectifier PIV rating should be AC * 2,8 +...

    Your rectifier PIV rating should be AC * 2,8 + 50% safety margin.
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    Is it? Time constant is L/R, and you will be...

    Is it? Time constant is L/R, and you will be cutting both L and R in half, so .....
    And you will have doubled the inertia, so no gain there either.
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    Use thin plastic wrap. The one you use to pack...

    Use thin plastic wrap. The one you use to pack food in. Just wrap it 2-3 times around your keyboard.

    Do not use this to wrap your PC or screen! It will stop the cooling air flow.

    Correction: I...
  14. You need to give more information! What size is...

    You need to give more information! What size is it? Make, model?
    The torque that will be fine for an Emco F1 will not be able to move a Bridgeport at all. When reversing you need to go through zero...
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    OK, so it is not controlled through the parallel...

    OK, so it is not controlled through the parallel port. Then it is quite possible the port does not have enough drive capability. Try to blow the dust off of an old PC and try that to make sure the...
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    Acceleration is important if feed speed is. For...

    Acceleration is important if feed speed is. For styrofoam I guess it does not matter much if the cutting speed is too low, but for some materials it may burn (wood) or work harden (stainless). If...
  17. Thread: SLO-SYN Motor

    by ESjaavik
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    1,999

    If using a 36V power supply and a chopper drive...

    If using a 36V power supply and a chopper drive it will not consume 7A to supply 7A to a 1,4V motor. You'll be closer if you assume V*A will be the same on input as output. Add some for losses, but...
  18. Thread: sculpting ice

    by ESjaavik
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    Mill it out of something else. Make a rubber mold...

    Mill it out of something else. Make a rubber mold over that, and cast ice sculptures in the rubber mold.

    I don't think they make these things one at a time by hand:...
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    Seeking Sony Magnescale user manual.

    Hi,

    Anyone have a user manual for Magnescale LH11-3R Sn: E101907.
    Even a short description of the button functions by someone familiar with it will help. I don't even know what functions it have...
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    Yes Gar, I agree on you disagreeing. :) In...

    Yes Gar, I agree on you disagreeing. :)

    In some cases ground can be a very local thing. One example is in aluminum melting works where a monkey wrench will not lie down! And standard aluminum...
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    Poll: @Xerxes: Of those, I would try the X32-10i. Since...

    @Xerxes: Of those, I would try the X32-10i. Since it is not the same brand, I don't know if it's exactly the same. But the blurb says it has a very good wetting ability. I believe that is what makes...
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    Yes, usually each subsystem ground should have...

    Yes, usually each subsystem ground should have the same ground potential.
    When this is done using low impedance cabling there will be no risk of creating a ground loop because to make current flow...
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    Poll: @mcmmach: What I was trying to express is that...

    @mcmmach: What I was trying to express is that microstepping does not improve your resolution much. Unless of course as you indicate if the motors are grossly oversized. You're right in that one...
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    Poll: If you look at this picture:...

    If you look at this picture:
    http://www.cnczone.com/gallery/showphoto.php/photo/2071/cat/500/ppuser/3485
    Those small specks you see in front of the soldering tip, in the upper right corner, are 2...
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    Uhh!?!?! Is it? Go get this, and try again:...

    Uhh!?!?! Is it?

    Go get this, and try again:
    http://www.joshmadison.com/software/convert/

    Einar
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    Not much. What I did was to mount the...

    Not much.

    What I did was to mount the gearwheel on a well fitting axle stub. Then I turned it to a press fit on a stub on the underside of the table. Of course it was not possible to turn down...
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    Hi Eidos, I did register but still cannot see...

    Hi Eidos,

    I did register but still cannot see any pictures.
    I must admit my Italian is not much to brag about, so I may have missed an important setting.

    Regards
    Einar
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    Laufer = runner. In this case it's the complete...

    Laufer = runner. In this case it's the complete moving assembly with magnets, coils and pole pieces.

    Winkelung = angle. But in this case it is probably a misspelling for Wicklung=winding.

    It is...
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    Hope I didn't scare you. The Isel drawing...

    Hope I didn't scare you.

    The Isel drawing would have been much easier to understand if the 2 flux paths did not have the same colour. Look at the drawing again. Where the arrows through one leg...
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    1.3lbs-in = 0,15Nm !! If there are any nuts...

    1.3lbs-in = 0,15Nm !!
    If there are any nuts involved, they must be wedged inside! :eek:

    My guess is they are 1,3Nm. That seems about right for 1A 3,2V if it's a fairly modern design. (1,3Nm =...
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