Messages

5481

Tangent Corner / Extremely clever electronics.

« on: May 17, 2012, 12:20:37 PM »

For anyone interested in electronics this video is well worth watching.

It is not a ‘fake’ video, it does exactly what it is shown to do – the ‘trick’ is in the fact that there are a lot more electronics, comprising the circuit, than are visible to the eye.

http://acidcow.com/video/32323-unbelievable_6_leds_chain.html

Tweakie.

5482

Show"N"Tell ( What you have made with your CNC machine.) / Re: Gunstocks!!!!!

« on: May 17, 2012, 01:57:41 AM »

Excellent work Jugster, superb surface finishing.

Tweakie.

5483

FAQs / Re: Mach3 cannot see input ports

« on: May 16, 2012, 02:52:32 AM »

Hi Razorab,

Have you set the particular input pin (13) in Mach as 'Active Low' ??

Tweakie.

5484

Show"N"Tell ( What you have made with your CNC machine.) / Re: Constructing a Low Profile Tool Height Setter.

« on: May 15, 2012, 10:43:49 AM »

 

Tweakie.

5485

Show"N"Tell ( What you have made with your CNC machine.) / Re: Constructing a Low Profile Tool Height Setter.

« on: May 15, 2012, 10:27:57 AM »

Too cute, now if you can get that to fit and I can read it, between just two of those lines on that scale. 

LOL - top lines or bottom? - go on Tweakie - you can do it 

Ian

I know when I am beat    (but I haven't tried it using the laser yet)

Tweakie.

5486

Show"N"Tell ( What you have made with your CNC machine.) / Re: Constructing a Low Profile Tool Height Setter.

« on: May 15, 2012, 09:18:51 AM »

 

5487

Show"N"Tell ( What you have made with your CNC machine.) / Re: Constructing a Low Profile Tool Height Setter.

« on: May 15, 2012, 06:42:03 AM »

As always, Tweaks, your work is beautiful and so friggin clean! Love it!

Dave

Thanks Dave.

so your actual resolution and repeatability is?

Hi YNN,

That is a very difficult, if not impossible, question to answer. The difference between theoretical and actual resolution of any machine depends on just so many factors.

In practice, as you know, I do of lot of small engraving work which requires a high degree of positional accuracy but that does not necessarily mean that the work is done to a high degree of dimensional precision, after all, my machine is basically just a wood router but overall, when engraving, I expect to achieve a positional accuracy of better than ± 0.00625mm.

Tweakie.

5488

General Mach Discussion / Re: Charge Pump & Mach 3

« on: May 14, 2012, 06:36:29 AM »

Hi Dave,

Are you certain that the 12.5kHz output from Mach has been stopped or could it be that the C4 is just not recognizing it for some reason ??

Tweakie.

5489

General Mach Discussion / Re: Question about motor outputs

« on: May 14, 2012, 06:25:41 AM »

Hi SD,

If you imagine a square wave - active low will step (a little while after) the transition from the high point of the waveform to the low point of the waveform whereas active high will step (a little while after) the transition from the low point of the waveform to the high point of the waveform.
It is a preference of some driver chips to only operate reliably when this is set correctly (if they expect to see an active low input then this is what should be used).

Tweakie.

5490

General Mach Discussion / G31 command.

« on: May 14, 2012, 03:48:10 AM »

Hi Guys,

I would be most interested to hear of others experiences using the G31 command.

I have been using it for some years now and with the exception of having to liberally add the ‘While isMoving() / Wend’ statements to the scripts (following a Mach revision some time ago) it has worked perfectly and without any other issues.

Does it sometimes go cranky and what is the suspected reason??

Your comments would be much appreciated.

Tweakie.