Messages

5741

Mach SDK plugin questions and answers. / Re: Impact engraving plugin

« on: May 11, 2011, 11:24:55 AM »

Hi Stitos,

Interesting one this.
I just ran two examples at the same power settings etc. The top one with 40uS unchecked and the lower one with 40uS checked and I was going to say that there is no difference between the two - until I saw the photo which does reveal a slight difference (the top one being better, perhaps).
I will investigate this further and see if I get a difference with other work.

Tweakie.

(please excuse typo in earlier post 40mS should read 40uS)

5742

General Mach Discussion / Re: How can I configure Mach3 for motor enable with step??

« on: May 11, 2011, 10:56:30 AM »

Tom's excellent work should not be dismissed but control has moved on leaps and bounds with the introduction of cheap stepper motor controller chips from, for example, Toshiba et al.
These chips can incorporate microstepping, automatic current reduction when idle and provision to combat mid band resonance amongst many other refinements over the basic, home constructed driver using discrete components.
It may even be cheaper to purchase the TB6560 and associated components, copy Toshiba's recommended circuit and build your own controller that way. Alternately the multi axis imported boards from China which use the TB6560's may be an even better solution.

If you have ever seen the difference between a stepper controller operating in full or half step mode compared with a stepper motor operating in 1/8th step mode you will know exactly what I mean.

Tweakie.

5743

Mach SDK plugin questions and answers. / Re: Impact engraving plugin

« on: May 11, 2011, 07:45:52 AM »

As far as I am aware it is the length of the impulse on the digital trigger with 40uS for laser and 10uS for magnet.
I have only ever used the 40mS setting.

Anybody else have any more info on this ?

Tweakie.

5744

General Mach Discussion / Re: How can I configure Mach3 for motor enable with step??

« on: May 11, 2011, 01:28:06 AM »

I would be relatively easy to do this externally to Mach with one TTL gate and a couple of components but……….

Imagine cutting a near horizontal line which may have 100,000 horizontal step pulses but only 2 vertical step pulses. If the federate was slow the vertical step pulses may only occur every 5 seconds or so.
What sort of time frame would you choose to say that the vertical axis was inactive so it is OK to release the enable signal ?

Perhaps if you could give us some more detail of the reason or application for this a reasonable solution could be found.

Tweakie.

5745

General Mach Discussion / Re: Help needed with Sable 2015

« on: May 10, 2011, 12:04:31 PM »

I don't know if this helps.

Tweakie.

5746

General Mach Discussion / Re: problem setup mach3 under g540

« on: May 10, 2011, 11:13:05 AM »

Have you checked that your steps per unit are correct. Al's calculator is here http://www.machsupport.com/forum/index.php/topic,16315.msg110286.html#msg110286

Tweakie.

5747

Show"N"Tell ( Your Machines) / Re: The Laser Project.

« on: May 10, 2011, 07:29:59 AM »

These are the prototypes of a solder paste mask for a small SMD circuit board. It was really just a test of Art's mathematics to see if the engraving plugin maintained it's scale and aspect ratio which, of course, it does. So easy to make that they are throw away items and don't really have to last for that many uses but we will see how they hold up. The cut-outs are the same size as the solder pads on the pcb which is perhaps a mistake as I now think that they could be made smaller and thus apply slightly less paste. As with everything new, you read-up on it first but practical experience always wins out in the end.

Tweakie.

5748

General Mach Discussion / Re: motors not turning - please help (newbie)

« on: May 10, 2011, 05:00:53 AM »

Thys,

Really glad you got it sorted.
Now the learning really begins. 

Tweakie.

5749

General Mach Discussion / Re: motors not turning - please help (newbie)

« on: May 09, 2011, 08:02:04 AM »

Yup, I keep getting an error trying to post a file on another thread.

email me     tweakie@talktalk.net

Tweakie.

5750

General Mach Discussion / Re: motors not turning - please help (newbie)

« on: May 09, 2011, 06:23:33 AM »

Thys,

What make and model breakout board are you using ?
A picture would be helpful.

Tweakie.