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Type: Posts; User: kawazuki

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    Re: Mini lathe spindle headstock

    Certainly the majority of eastern / chinese models have plain ball bearings fitted as stock - almost first upgrade is taper roller bearings if higher speed spindle operation is required, so would...
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    Re: Granite surface plates

    Sounds like a good way to waste 600 euros ! Your thought will rely on a bolted connection that can't be threaded so must use either expanding bolts (very risky) or a resin anchor system, which by its...
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    Re: Connecting MPG to PC or G540 - I'm confused!

    No mention of opto - isolation on linked device! Signal CONDITIONING is not isolation! I suspect it cleans noisy signals.
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    Re: Connecting MPG to PC or G540 - I'm confused!

    Why is everyone trying to get me to buy a breakout board! The one indicated just sits in-line between pendant and the PC expansion card and apart from adding 5v, it does nothing else! I can achieve...
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    Re: Connecting MPG to PC or G540 - I'm confused!

    Thanks for the reply but 'Suck it and see' doesn't work for me! And adding a Breakout Board in line (that also requires 5V !) doesn't make any sense whatsoever. My set-up of PC to 25 core cable to...
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    Re: Connecting MPG to PC or G540 - I'm confused!

    Follow up from last post above - I probed the two parallel ports on the CNC PC - 1st on the motherboard and 2nd a new PP expansion card. The 1st PP shows 4.18v on pin1 to pin2 or pin9 (both grounds?)...
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    Re: Connecting MPG to PC or G540 - I'm confused!

    Some misunderstanding here - Forget the USB pendant, that is beyond redemption! I'm adding a DB25 plug to the wired pendant as it came bare wires. I always thought that parallel ports were 'dumb' ie....
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    Re: Connecting MPG to PC or G540 - I'm confused!

    One quick Q before I start gluing wires - referring back to my 1st post, Pictures #3 & #4 - why does +5v and ground need to be applied to pins 1 & 2 ?
    Is this not putting 5v into the PC from an...
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    Re: Connecting MPG to PC or G540 - I'm confused!

    Yeah Right! LOL. I have tracked down two other sellers of the same device and their web adverts are virtually identical bar the odd spelling mistake. From my experience, the sellers do not make the...
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    Re: Connecting MPG to PC or G540 - I'm confused!

    Thank you all for the replies. There does seem to be some confusion though, although I thought it was clear in my 1st post - the first purchase the 'Mach3' pendant was / is supposedly a USB device...
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    Re: Connecting MPG to PC or G540 - I'm confused!

    With the greatest respect, I think I know what a device connected by USB looks like / is described as - refer to the attached photo!
    Each of the varied outputs are selectable via the push button...
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    Re: Connecting MPG to PC or G540 - I'm confused!

    At this point - cheap is good, another £10 / $15 I can just about afford that investment LOL! No, never have or needed two ports but if it provides the input space then I'll live with its (potential)...
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    Re: Connecting MPG to PC or G540 - I'm confused!

    I cannot see how you keep getting 20 required inputs? The schematic in my first post detailed 22 wires - there are power, shielding, 3 axis that I don't have, E-Stop and a couple of others - all of...
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    Re: Connecting MPG to PC or G540 - I'm confused!

    Nice piece Peter, but its not really addressing my problems - unless you 'tell all' on how it is wired, to what, and how Mach3 deals with that info ?

    I had a flash of inspiration whilst...
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    Re: Connecting MPG to PC or G540 - I'm confused!

    This is one thing I can't comprihend - I've opened the device to see how it was wired - It has a 5v , a 0v ground, a 'A' connection and a 'B' connection. How the switches, axis selection and...
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    Re: Connecting MPG to PC or G540 - I'm confused!

    You would have thought so, but no ! The Chinese seem to like producing stuff with absolutely no back-up or support. Once its sold, they do not seem to give a toss.!
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    Re: Connecting MPG to PC or G540 - I'm confused!

    I looked at the Smoothstepper web site and honestly i'm more confused than I was before! I couldn't understand what was being said or eluded to! I'm simple when it comes to electronics - I'm a plug A...
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    Connecting MPG to PC or G540 - I'm confused!

    Hi Guys - i'm not a frequent visitor as i'm usually able to resolve problems myself but this is stumping me completely, probably due to my lack of electronics understanding!

    I bought a 'Chinese'...
  19. Thread: BigStick

    by kawazuki
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    Re: BigStick

    Fundamentally, with a belt drive you do not use the gears any more and as regard the other posters comments the motor would be geared by the chosen pulleys
    to remain in the same rpm / torque range...
  20. Re: My machine is not cutting the distance I tell it to

    Are you sure they are inch / imperial screws? A metric screw used with imperial settings would give a similar error ie. a 5tpi screw = 5 turns / 1 inch, a 5mm pitch screw x 5 turns = 25mm which is...
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    Re: Unfortunately Its a Chinese MPG !

    See, this is where you lost me . . . .
    I have a PC, I have a PSU and I have a Gecko G540 using a Parallel connection - nothing else! I was expecting to connect the USB to the PC, make a setting...
  22. Re: How to use active proximity home switches with the G540?

    All you have done so far it tell Mach that you've reached a limit. Now you have to set up the limits in the software - I only know Mach3 but assume it will be under 'Limits and Homing' in the...
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    Unfortunately Its a Chinese MPG !

    Hi All,
    I hope the collective minds here can hopefully solve this problem. Below is a picture of a Chinese MPG I bought - wasn't a lot in cost terms but even if its crappy it should work - Right?...
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    Re: New machine on the way BT16V

    Looking at the website pictures I'd suggest it is vee belt drive with two different pulley diameters hence the Hi / Low claim!
    Don't expect too much performance from a brushed 600w motor though -...
  25. Re: Padovani Labor 255 lathe, thread plate wiped by solvent

    You may not have realised, but this thread is about 10 yrs old and both posters haven't visited the site for one and five years respectively - so don't expect a quick answer!
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    Re: Connecting electronic probe to Mach3

    So much for working as intended - yes, the stylus movement provoked the internal LED's to change from Green to Red when touched, & in Mach3 diagnostics it showed a trigger event BUT
    first test...
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    Re: Connecting electronic probe to Mach3

    UPDATE : I just couldn't wait LOL! So I used a 12v PSU, hooked everything up as Peter noted and . . . . . . . . it works fine, another tool in the arsenal.
    Just have to a) get to grips with probing...
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    Re: Connecting electronic probe to Mach3

    That's basically what I was planning to do (although with a 5v supply). Your last diagram indicates that the G540 does have a optical 'disconnect' on the inputs
    so isolating the sensor voltage from...
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    Re: Connecting electronic probe to Mach3

    I don't have a breakout board - I use a Gecko G540 ie. PC, parallel cable, parallel port on G540, output to steppers. Gecko is fed from 48v / 11A PSU.

    Your comments re NO / NC don't make sense to...
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    Connecting electronic probe to Mach3

    Hi All - tried this thread in the Mach Forum with not much response so i'm putting it to you guys!

    I just got a nice Chinese Reinshaw type kinematic probe for not a lot of money and I'd like to...
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