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Messages - Tweakie.CNC

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3581
General Mach Discussion / Re: TB 6560 BOB LIMIT SWICH CONNECTIONS
« on: September 25, 2013, 10:03:33 AM »
Quote
If I connect a momentary switch between the normally open and common on a limit switch so that when it trips from the normally closed position I can press it and press jog together to get off the stop?

Hi Graham,

Not sure if that would work or not (never tried it).

I would think the best option would be to enable Auto Limit Override (Settings page). Tick this and it will allow you to jog off the stops (assuming you move in the correct direction ).  ;)

Tweakie.

3582
General Mach Discussion / Re: TB 6560 BOB LIMIT SWICH CONNECTIONS
« on: September 24, 2013, 08:56:09 AM »
Hi Graham,

I am pleased you got it sorted.  ;)

Tweakie.

3584
General Mach Discussion / Re: TB 6560 BOB LIMIT SWICH CONNECTIONS
« on: September 23, 2013, 08:44:56 AM »
Hi Graham,

Can you post a link to, or information on, the TB6560 board you have (there seems to be many different types).

Tweakie.

3585
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: September 22, 2013, 02:41:44 AM »
An example of testing and early failures…

I built a small test rig which gives off similar RF emissions to an operating laser tube so I could test run the unit without using the laser. After a couple of hours the clock stopped. Cutting the clock apart revealed a long plastic shaving caught up in the gear train and although the mechanism was beautifully constructed the Chinese manufacturers of this device seem to have absolutely no idea of quality control. Cleaning, removing the debris then gluing it all back together seemed to have resolved the issue and the 24 hour test then continued without fault.
Prototype #1 is now off on it’s travels for further testing with professionally manufactured laser machines whilst prototype #2 is now running 24 / 7 until destruction.

Tweakie.

3586
Good news Brian, I am pleased that you are on your way to making chips.  ;)

Tweakie.

3587
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: September 18, 2013, 08:17:14 AM »
Quote
Would it not be easier to use a small engine hour meter?

Maybe Jeff.


Quote
Can you add data storage system that monitors & collects beam; on time, emission power and temperatures at tube, coolant and ambient. And then display it in a spread sheet that can be used to predict life cycle?

It's all possible Craig and I am sure it would not be too difficult to do if there was a requirement. Perhaps another project is on the horizon.  ;D

Tweakie.



3588
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: September 18, 2013, 06:41:19 AM »
Following a request, on another forum, I have developed another little device.

This unit records actual laser tube emission time, as opposed to machine run time, and is intended to provide an indication of tube lifetime. It uses RF technology to detect the laser tube emissions so requires no electrical connection to the host machine and will be suitable for use with all makes and models of commercial laser machines which use a dc excited glass laser tube.

Laser tubes have a finite lifetime which can perhaps be likened to draining a tank-full of water – just how long it lasts depends on how wide the tap is opened, however, this unit should be useful in providing averages.

The initial ‘rats-nest’ model has clocked up some 15 hours now and I am looking forward to some serious testing of this, the first prototype.

Tweakie.

3589
General Mach Discussion / Re: Parallel cable question?
« on: September 17, 2013, 08:25:09 AM »
Quote
can anyone tell me the pinouts for the cable...the one I have is wired one to one, two to two, etc. is this right?

Gerry,

You are correct it is 1-1, 2-2 etc but check them all, just in case some are crossed or missing.  ;)

Tweakie.

3590
Hi Brian,

As the details on this breakout board are pretty poor (with errors) my best suggestion…

Check that your parallel cable is indeed wired Pin1 to Pin 1, Pin2 to Pin2 etc.
Check that your USB cable is providing the necessary 5 volts to the breakout board.

In Mach3 configuration (change just one thing at a time and observe the results)…
Try changing the Active Hi / Low state of the Enable signal  LPT Pin 1 (you really only need one enable signal but as you may have them all enabled then the active state of them all needs to be identical).
Try changing the Active state of the other axes (just the step pins).

That’s all I can think of trying just at the moment.

Tweakie.

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