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Very good site phooddaniel, you have 'earned' another bookmark :¬).
BTW, if I am not in a mistake inertia momentum of a cilinder is cubic in relation to diameter, so for all these drawings for the...

your motors have 6 wires? If so, they are unipolars, and are the sames that ones I got some time ago. If is the case, discard center taps and use them bipolar (297/298 are for bipolar) then as you...

If I am not in a mistake, geckos are 80V, 7A max.. so 8A sounds very difficult to achieve.

/F

Um, I beg your pardon in advance but at least from a second world country point of view... this kind of sentences are the ones that closes the loop to the first post.. :cheers:

I got the C1, not tested yet. Good PCB and layout, but the soldering work is obviously hand made. No complaint at all by now.

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5000 KW soon? WoW, really does not sound portable to me... :¬)

Maybe a picture showing the wires is informative, 10 wire steppers are unknown to me, but if I think in a combination of wires that result in 10, I can think in:

6 wire for stepper and 4 for...

Phil, I think the key words are "directly" and "mach software" :¬)

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probably too low cost..

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Ynneb, maybe not enough.. take a look at:

www.dsv.su.se/~icss-jpc/exjobb/interesting/2004_vlsid_invited.pdf

BTW, using CPLD/FPGA and adhere to SW copyright laws sounds smart to me.

/F

Nope. Too little. Look for a NEMA23 (2,3" flank, and 2" to 3" long) frame size stepper

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If you rewind the hi-V of the trafo to very low V (say 1V to 3V using 3 turns of 1/2"), then you will have a very high A trafo (say 500A for 2KW trafo), that is useful for, by example, to make a spot...

Mvaughn is correct. Look for a driver with 2A of current for a capable stepper like the ones in Laserjets or dotmatrix printers. This means L297/298 combo circuits for bipolar steppers, or...

In all my engineering courses, theta never was pronounced 'zeta' but 'teta'. The fact that in Spanish 'h' is a dumb letter solves the problem.

/F

A system is in closed loop when a part of the output signal is used as a feedback to the input. This way, the fraction of the output signal act as a 'error signal' showing the deviation of the output...

there are XLR with 4 pins & are perfect for bipolars...

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take a look to swede's webpage at www.5bears.com to take ideas about a selfbuilt machine

hope it helps
/F

IF I am not in a mistake skate bearings are from abec-1 to abec-7 in uneven numbers, being better for higher number so yours are at least on the good side :)

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you need to measure ohms between pairs, having in mind that if you try to measure between the ends of different coils you will receive a measure of infinite ohms. If you measure the rigth wires you...

a 5 wire motor is or can be seen like a 6 wire unipolar motor with both commons linked. look to bunalmis picture

/Fer

http://www.allinbox.com

Lot of diy machines already done, all sizes, all budgets, huge amount of ideas, forum, faqs...

Btw, in french, but if you do not speak french like me, use...

I think hobbiest speaks about having the gantry mounted back in order to having *the spindle* centered to the table travel.

Moving table is easier to build but demands more real state. Moving...

If I am not in a mistake, the explanation was in one of ballendo's post and talks about designating X not the longer axis but the one that can bear the largest raw material ;)

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Believe me, without controller is difficult to spintest a stepper. You need a step source, direction source, voltage source... too complicated.

If what you want is testing the router mechanics,...

If you do not care about inductance and losses
-Current in coil 1 is 30/R Amperes
-Current in coil 2 is maximum provided from source

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More free CAD apps:

http://www.freecadapps.com

Pretty intuitive URL, btw :)

/Fer

I don't know the exact name in english, in spanish that product sounds like 'decapping gel'. Its a kind of product with gel consistency that you apply with a stencil, and makes the paint to bubble...

I think that the low glow in the step pin led is ok, because you are feeding the led with a kilohertz pulsing signal. Think of it as you are using a sort of pwm to the led, then the average voltage...

look for any eheim pump, hydor pump. look for about 750/1000 liters-hour. Sorry I dunno in gallons.

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Hello from Madrid, Spain.

/Fer