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Messages - Zax

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Mini CNC / Re: new to me cnc mill!!!
« on: August 17, 2019, 03:49:48 AM »
I have a similar Xylotex 3-axis controller on my large CNC, it was a fairly straightforward process to build a Nano to parallel port adapter, then you have a standard USB Grbl driven machine.

I used a parallel port breakout board and a Nano IO expansion so all the connections were screw terminals, it's just a case of putting wires between the step / direction pins etc.

You then connect the parallel port cable from the controller to this new adapter and plug the computer into the USB side on the Nano. I run both my CNC machines from T2Laser and generate the offsets in CAD but there are other Grbl CNC solutions available.

Engraving / Re: Machine stopped mid job????/
« on: August 16, 2019, 04:32:28 AM »
Did you get an "error" from the laser? This indicates Grbl has detected a problem, usually due to a memory or USB fault. Was the Nano warm/hot?

The latest Chinese Nano's use a clone micro-controller with really low quality memory. It could also be caused by electrical interference, the USB driver going into a power-saving mode or something like that.

Recovering the job is unlikely as when Grbl goes into an error state it doesn't keep track of position (because it immediately stops the motors rather than decelerating).

T2 Engraving / Re: machine 'seized' during burn
« on: August 16, 2019, 04:26:00 AM »
Yes, the pull down resistor must have disconnected. It's unlikely it would fail.

T2 Engraving / Re: machine 'seized' during burn
« on: August 14, 2019, 09:27:33 AM »
It sounds like you just need to re-enable home switches from the setting menu, probably the firmware reset somehow.

The "flash" during power up / down is due to not having a pull down resistor on the laser, that behavior should not have changed.

T2 Engraving / Re: machine 'seized' during burn
« on: August 13, 2019, 10:10:57 AM »
It sure sounds like you have an electrical problem, it must be generating a large spike to cause that lockup which indicates a larger issue with your wiring.

If the red home icon is missing the firmware may be corrupt. That comes on when Grbl tells T2Laser it is requires homing.

T2 Engraving / Re: machine 'seized' during burn
« on: August 12, 2019, 10:54:51 AM »
The board doesn't do much, the stepper drivers and Nano are the important parts. Do not move your machine by hand even when turned off, that's a sure way to damage the drivers.

If it's seized up, holding current is on then there's a problem with either the driver or Nano. Using my default Grbl parameters it should not remain energized.

The Grbl "error" is displayed in the message window not a popup like the driver fail which was a Windows error. It will simple say "error" or something similar, this is coming from the Nano and tells T2Laser that it's essentially crashed.

If the connections are good then I would start by replacing the Nano and then drivers.

T2 Engraving / Re: machine 'seized' during burn
« on: August 12, 2019, 09:38:19 AM »
Any error reported in the message window?

It could be electrical noise or a bad connection somewhere, or simply the Nano failing.

Engraving / Re: Batch engraving
« on: August 12, 2019, 06:14:42 AM »
Yes you can do that too and for a few items that's what I do but for many multiples I find cutting foamies is quick and easy, then you just drop the wood tokens in the holes.

I would say the diode most likely, is the fan running normally?

Engraving / Re: Batch engraving
« on: August 11, 2019, 10:50:45 AM »
I would suggest rather than tracing in T2Laser, use Inkscape and generate the entire job (6 x 6 or whatever size) and load the DXF.

As long as you don't have Relocate Origin enabled the 0,0 will be kept from Inkscape so you can easily save the circles (used to make a template) and then the array of designs (be sure to delete the circles before exporting or set them to yellow).

Engraving / Re: Batch engraving
« on: August 11, 2019, 10:02:57 AM »
What software and what do you need to engrave, raster or vector?

I've done 1,000's of wood tokens over the last couple of years, double sided. I fix a sheet of foamies to my waste board and cut the circles to make a template, then I insert a dozen or more tokens and engrave them. Rinse and repeat, then do the opposite sides.

It helps to have home switches so you can get back to the exact location, using a preset position.

I haven't seen this problem exactly but it could be due to lower laser output, and since the beam focus isn't regular (wider in one axis) the power density is lower still.

T2 Engraving / Re: machine 'seized' during burn
« on: August 11, 2019, 04:26:03 AM »
1. The driver failing is just a typical Windows problem
2. Possibly the USB cable, electrical interference, internal hub clash with another USB device, Nano error
3. Disable all power savings (in Windows and often in the BIOS for USB ports)

None of these would be helped by reinstalling software as they are not related to the software.

T2 Engraving / Re: machine 'seized' during burn
« on: August 10, 2019, 02:06:18 PM »
Very nice results. The IO error is from dot net and due to the driver failing or the USB connection being interrupted, it could also be caused by power savings if your machine shuts off the USB to save power.

Benbox / Re: New to Laser x moves but Y doesnt
« on: August 10, 2019, 03:46:30 AM »
It could be a firmware issue, but usually it will only go back when up or down are pressed.

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