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Messages - Tweakie.CNC

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5931
A little more progress - This is the over-travel limit switch, well 3 switches actually but they are connected in parallel and operate on the 'first home' principle.

The total thickness, including the PCB, is 2mm and this assembly fits beneath the the contact plate (in the base of the probe) and will activate a limit input if the G31 probing routine failed.

The probe will continue to use the 3 wire connection to the machine and additional circuitry has now been fitted, at the breakout board end, to detect probe circuit continuity. This effectively signals a 'Probe Already Grounded' condition to the probing routine if either the positive or GND connecting wires are disconnected or if the probe is not actually connected to the machine. This added 'fail safe' feature was considered necessary because I am signalling the over-travel limit through the two supply wires.

Hopefully, I have now covered every eventuality but life always seems to punish the complacent and so 'time will tell'.  ;D

Tweakie.

5932
Well, I finally got around to VCarving this boat name into a piece of Teak.

Because the overall length is greater than my machine table it had to be completed in 3 stages but this is not as difficult to do as I had first thought, having previously practised on a piece of MDF.

Now the hard work begins - It has to be profile cut to a curved shape and the edges rebated, varnished and the lettering gold finished.

Tweakie.

5933
Hi Doug,

The tb6560 controller works best with a 5Volt TTL signal, if your parallel port is only outputting a 3.3Volt TTL signal then this could be the cause of your problem. Check your X axis Direction pin with a voltmeter - it should switch between 0V and 5V (approx.) depending on the direction of motion.

Tweakie.

5934
Hi Rune,

I am pleased that you have found the solution.  ;)

Tweakie.

5935
Hi Rune,

The GCode is fine and this is not really a Mach3 issue because the problem appears to be with your use of Sketchup. You have no material size set so there is nothing to make.

My best suggestion is that you check out the Sketchup tutorials in order to find out how to select the area of the drawing you wish to create the GCode for. The Phlatforum will have all the information you need but you will have to search for it.

Hope this helps.

Tweakie.

5936
Hi Rune,

There should be no problem using the Phlatscript GCode with Mach3.
If you post your code I will take a look to see why you are having a problem.

Tweakie.

5937
General Mach Discussion / Re: Mach 3 Stopped working
« on: June 16, 2012, 07:44:35 AM »
Hi Mohammad,

There are a couple of solutions but before making any suggestions can you please confirm that you now have the proper Mach license in your own name.

Tweakie.

5938
Good news Patrick, I am pleased you got it sorted.

Tweakie.

5939
FAQs / Re: Mach 3 stopped working
« on: June 15, 2012, 03:35:08 AM »
Hi Paul,

Click on - View ; Load Screens : 1024.set.

Tweakie.

5940
General Mach Discussion / Re: Mach3 specific virus ???
« on: June 15, 2012, 03:30:05 AM »
I know exactly what you mean Terry but in my case the most virulent Virus is probably me - tinkering with setting I should have learnt by now to leave well alone.

I was reading an article, from years gone by, where customers complained that new vehicles were no longer supplied with a ‘tool kit’. The makers claimed that their new models were now so reliable that the tool kit was no longer necessary.
I have a sneaky feeling that not providing their customers with a tool kit probably caused the largest, all time, single increase in vehicle reliability.  ;D ;D

Tweakie.

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