# Centering how to turn the light on

**URL:** <https://forum.lightburnsoftware.com/t/centering-how-to-turn-the-light-on/92067>\
**Category:** GRBL\
**Created:** [February 18, 2023, 2:54am UTC](https://forum.lightburnsoftware.com/t/centering-how-to-turn-the-light-on/92067 "2023-02-18T02:54:22Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![JohnJohn](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/johnjohn/32/37027_2.png) [@JohnJohn](https://forum.lightburnsoftware.com/u/JohnJohn)\
**Post date:** [February 18, 2023, 3:07am UTC](https://forum.lightburnsoftware.com/t/centering-how-to-turn-the-light-on/92067/2 "2023-02-18T03:07:51Z")

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To enable the Fire button you must enable it in Device Settings.

 ![2023-02-17_20-03-24 turn fire button on](https://forum.lightburnsoftware.com/uploads/default/original/3X/0/5/05936b6c3adb454ca080ec4b373e4844a18cd0cb.png)

Then Click ok.  
Then close LightBurn and restart it.

The Fire button will appear in the Move window.  
Set the power setting at 1% for testing.

This may be worth review:

> [@How do I turn on my diode at low power to focus it or frame a job?](https://forum.lightburnsoftware.com/t/how-do-i-turn-on-my-diode-at-low-power-to-focus-it-or-frame-a-job/10520):
>
> Diode lasers often don’t have a red-dot pointer like CO2 lasers do, so it is often useful to enable them at low power for focusing or framing. (Please do NOT do this if you have a CO2 laser, as the beam is invisible and this could blind you or start a fire) In LightBurn, go to Edit \> Device Settings, or click here: [image] Turn on the ‘Enable Laser Fire Button’ switch (make it green): Quit LightBurn and re-run it. You will now have two new controls in the Move window. A …

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