UCCNC M10 Laser not turning off on M10 Q0 Command

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Re: UCCNC M10 Laser not turning off on M10 Q0 Command

Postby Robertspark » Sun Oct 21, 2018 4:48 pm

Balazs, thanks for testing that.

Mayhem, is there capacitors that are being charged somewhere in your circuit that are delaying the laser?

From what I've seen of these circuits before there is a main power supply circuit which provides the bulk of the current to the laser which may be de-energised by the e-stop button / circuit and then the logic side which just fires the MOSFET very fast.
Rob
Einstein ― “If you can't explain it to a six year old, you don't understand it yourself”
...working my way through the 1000+ ways things don't work to find the one that does
UC400eth, UC300eth, UCCNC v1.2106, Neuron Lite
UCCNC v1.2105 Macro Manual
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Re: UCCNC M10 Laser not turning off on M10 Q0 Command

Postby cncdrive » Sun Oct 21, 2018 4:54 pm

Hi Rob,

Maybe the 1.2049 has this issue. I'm not sure if it does not if it does not, I did not have the time to test it yet or to look the bug fixes back, but will try to do it on Wednesday as this Monday and Tuesday will be a national holiday here and I will be away.
Anyways it would be interesting to see if the OP could test the same with the UCCNC version 1.2106 to see his results too.
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Re: UCCNC M10 Laser not turning off on M10 Q0 Command

Postby Robertspark » Sun Oct 21, 2018 5:00 pm

Balazs, thanks for doing it, enjoy your break / holiday, as you can see the post was going round in circles and trying everything.
Rob
Einstein ― “If you can't explain it to a six year old, you don't understand it yourself”
...working my way through the 1000+ ways things don't work to find the one that does
UC400eth, UC300eth, UCCNC v1.2106, Neuron Lite
UCCNC v1.2105 Macro Manual
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Re: UCCNC M10 Laser not turning off on M10 Q0 Command

Postby Vmax549 » Sun Oct 21, 2018 5:13 pm

Hi ROB, If it worked on teh other controller(GRBL) then it should work with UC100 UNLESS there is a problem with his UC100 and that could be the probable cause ???

I think everything else has be eliminated or confirmed to work.


(;-) TP
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Re: UCCNC M10 Laser not turning off on M10 Q0 Command

Postby 3d0g » Sun Oct 21, 2018 6:07 pm

Here's my run of Pulse Width Test 254DPI UCCNC F78.7401.txt

It's only approx 5mm x 5mm so detail is hard to pick out but it generally looks right. I'm running 1.2049.


Image
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Re: UCCNC M10 Laser not turning off on M10 Q0 Command

Postby cncdrive » Sun Oct 21, 2018 6:31 pm

Yes, the drawing is very small, we put it in electro-microscope to see the details is why the image is a bit "oval" on the picture. :)
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Re: UCCNC M10 Laser not turning off on M10 Q0 Command

Postby 3d0g » Sun Oct 21, 2018 6:42 pm

I'm running a 100W CO2 laser and throttled power back as far as I could yet still get it to trigger. My beam width at the focal point is .33mm - over 3x the size of the movements in this test file...
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Re: UCCNC M10 Laser not turning off on M10 Q0 Command

Postby 3d0g » Sun Oct 21, 2018 6:56 pm

mayhem2408 wrote:As you can see from the original image, even on your machine is doesn't line up quite right.


I highly suspect that was because the metric feed rates are nonsensical to my machine and got capped by UCCNC.
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Re: UCCNC M10 Laser not turning off on M10 Q0 Command

Postby mayhem2408 » Wed Oct 24, 2018 10:43 am

cncdrive wrote:We have just ran a test using your code with UCCNC version 1.2106 with UC100. Feedrate was F2000.
Please see the test results picture in attachment.
The laser module we used has some focus issues which we did not have time to fix now, but it can be seen that there is no shift and no missing lines.

I will install V1.2106 on my laptop and give it a try. I am not using this version on my production machine as it is still in beta. I will post the results tomorrow. Thanks.
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Re: UCCNC M10 Laser not turning off on M10 Q0 Command

Postby mayhem2408 » Wed Oct 24, 2018 10:48 am

Robertspark wrote:Balazs, thanks for testing that.

Mayhem, is there capacitors that are being charged somewhere in your circuit that are delaying the laser?

From what I've seen of these circuits before there is a main power supply circuit which provides the bulk of the current to the laser which may be de-energised by the e-stop button / circuit and then the logic side which just fires the MOSFET very fast.

The driver I am running as been specifically designed for rapid fire from a 5V TTL signal. As I have shown in a previous post from the oscilloscope test, the response time of my laser driver is not the problem. It will fire at 50KHz with no detectable delay. 1KHz is a piece of cake for this driver.
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