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Messages - Zax

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1
T2 Software Updates / Re: Moving T2 to another HDD fresh copy of Windows 10
« on: December 17, 2018, 08:52:26 AM »
Shoot me an e-mail and I will help you.

2
Engraving / Re: Backlash?
« on: December 17, 2018, 05:49:44 AM »
The circle represents one "backlash" event, when this is repeated for every line in a raster engraving you get a saw tooth edge where one line is slightly offset from the previous and next.

@nottingham82 and @ggallant571, I just went back and looked at his pictures and noticed the X-axis motor above the gantry. I wonder if this is causing the problems, that large mass may be shifting the carriage. Any one seen them built like this before?

This is how it should look, motor at the bottom so it's hanging on the rail and keeping it stable.

3
Engraving / Re: Backlash?
« on: December 17, 2018, 04:17:29 AM »
Don't bother with raster images and bi-directional etc, that just complicates things, stick with simple fast vector circles to test.

Once you get those round and connecting everything else will work.

4
Engraving / Re: Clocks.
« on: December 17, 2018, 04:10:41 AM »
Nice job and excellent centering. All it needs are a few hands  ;D

5
Engraving / Re: Backlash?
« on: December 16, 2018, 11:24:00 AM »
OK, so engraving vector circles shows the ends don't always align which confirms a mechanical issue. This makes sense since disabling backlash also improves the output.

You must have some play somewhere, with the machine off if you grip the bottom of the laser can you move it any?

I wonder if it's even something simple like a loose lens that shifts slightly changing the beam position.

6
Engraving / Re: Backlash?
« on: December 16, 2018, 10:03:32 AM »
If your Inkscape circles were pixelated then you were using raster, what you need to test is vector. You can do that by saving as DXF or using the built in Sketch which also allows you to do the step and repeats automatically (matrix copy).

You'll need to run them pretty fast (vector feed rate 2000 if that will engrave, lower as needed), and do 4 x 4 at say 25mm diameter.

If this confirms an axis backlash you don't need to worry about the images.

7
Engraving / Re: Backlash?
« on: December 16, 2018, 08:00:48 AM »
Resolution should match the laser spot size, usually 0.12~0.18. So 0.15 (170 DPI) would be a good starting point as a compromise of speed and quality.

So if your image width is 1000 pixels, it will engrave at 150 mm wide.

If your image is anti-aliased then it will look more pixelated when changed to 1-bit.

I don't think it's the image though as your results look crisp with bi-directional disabled.

Have you tested circles using Sketch? This is a simple test for backlash, if you do a matrix of circles at high speed and any of the ends fail to meet up correctly then it indicates backlash.

8
Trouble Shooting / Re: Motors Constantly Going
« on: December 15, 2018, 05:06:28 PM »
The drivers should be set correctly but you could check the current limits just to rule that out.

You could also disconnect the belts and see if they work correctly without any loading.

The most popular brand seems to be the EleksMaker, but it's best to buy from their site to ensure it's genuine.


9
Engraving / Re: Backlash?
« on: December 15, 2018, 04:57:48 PM »
During your testing have you changed any other software settings? Is Photo Mode disabled?

10
Trouble Shooting / Re: Motors Constantly Going
« on: December 15, 2018, 03:01:06 PM »
No. The motors should not get hot, or whine when idle.

Check the connections, make sure the wiring isn't backwards or something.

11
T2 Engraving / Re: t2 software
« on: December 15, 2018, 02:59:43 PM »
The problem here is actually hardware, he connected a TTL 5.5W to the MOSFET output - so the 12VDC PWM is feeding the input. Not sure yet what damage has been done, hopefully he got lucky.

12
Trouble Shooting / Re: Motors Constantly Going
« on: December 14, 2018, 05:23:07 PM »
If you laser is 2.5W or less you can use the motor connector, it's the same MOSFET switched output as your old board.

If the laser has a TTL input you should use the laser connector.

13
Trouble Shooting / Re: Motors Constantly Going
« on: December 14, 2018, 01:44:27 PM »
You should be able to connect it and test, T2Laser will work with the Eleks firmware for testing and then you can upgrade to the 1.1e DEFAULT if you choose.

14
T2 Engraving / Re: servo problem
« on: December 13, 2018, 04:39:14 AM »
You just select the firmware in the menu, the process is no different to flashing any firmware.

15
General Discussion / Re: .dxf fill?
« on: December 12, 2018, 06:40:50 AM »
Not sure how I missed this post, but that's due to open polylines.

You must be using Inkscape, disable the LWPolyline option in the export.

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