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Author Topic: T2 laser comes on when going to laser control. SOLVED!!  (Read 9205 times)

nottingham82

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Re: T2 laser comes on when going to laser control. SOLVED!!
« Reply #45 on: January 13, 2018, 04:13:40 PM »
you can just turn the laser power to 1 then click engrave frame (power on)
This will not affect your gcode and your engraving will still be at whatever power you had set.
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Zax

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Re: T2 laser comes on when going to laser control. SOLVED!!
« Reply #46 on: January 14, 2018, 05:59:29 AM »
Exactly. Trace Frame does not use the laser (just shows you the perimeter with the head), Engrave Frame uses the laser with the manual power setting.
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pbucc

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Re: T2 laser comes on when going to laser control. SOLVED!!
« Reply #47 on: February 23, 2018, 06:14:06 AM »
does t2 save the manual power setting?  if I make it 1 (i know the g code will use the speed there.) and close t2 will it save.?

also we are talking about the black and red leads.  i was going to stick the ends of the resistor into the cable leads.
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2500mw A3 eleks maker.
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"I'm new to this. Please be gentle"

Zax

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Re: T2 laser comes on when going to laser control. SOLVED!!
« Reply #48 on: February 23, 2018, 06:35:19 AM »
Yes T2Laser saves settings, but the manual power value has nothing to do with G-code generation. That is set on the design screen.

The resistor goes between the TTL signal and ground, which should be the yellow and black wires but I've seen so many with the wrong colors it's best to check the screen printing and put it between S and GND.
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dpharand

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Re: T2 laser comes on when going to laser control. SOLVED!!
« Reply #49 on: March 02, 2018, 08:50:53 PM »
I'm totally green with laser.
Will adding a 1K resistor reduce the full power.
T2 is the way to go (I'm convince) but I didn't have that issue trying other software.
I repeat myself I'm a newby and don't want to offend nobody.
Could it be resolved in the software itself.
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ggallant571

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Re: T2 laser comes on when going to laser control. SOLVED!!
« Reply #50 on: March 02, 2018, 09:25:45 PM »
I suspect if you rewrote the Arduino boot loader (reset code)  you could reduce the time to a few microseconds. But then you couldn't use the built-in flash upload function. The $0.03US hardware fix is cheaper, quicker, and safer.
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Zax

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Re: T2 laser comes on when going to laser control. SOLVED!!
« Reply #51 on: March 03, 2018, 03:53:50 AM »
No you do not lose any power, it is a TTL logic signal (5VDC) to turn the laser on and off. The laser is powered separately from the 12VDC. All you are doing is keeping the signal at 0V when it is not turned on, to prevent the laser from unexpectedly switching on. Logic is either on or off, so even if the signal were only 4VDC it would be full power.

I tested Grbl without the boot loader and the pulse was eliminated but many people don't have the hardware or skills to do this so it isn't practical.
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dpharand

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Re: T2 laser comes on when going to laser control. SOLVED!!
« Reply #52 on: March 03, 2018, 06:50:12 AM »
Thank you for your quick reply.


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