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@vecko Are the threaded holes on the other side?

@ramon-moreno Checkout the free trial ofT2Laser. It is much more stable, has many more features and is easier to use.

@Proape Home switches are so the machine can find 0,0 automatically, so when you connect it will move to the front left corner and set Machine 0,0 and then you can use preset locations for different jobs.

@Proape Actually you can position the servo in any location, but it either lifts the pen a small amount or a lot and when down it is just gravity.

@Proape Yes, because the servo is connected to the laser pin (which is actually the spindle pin); so servo, laser and spindle use the same control.

@Proape There is no sense in telling the machine it's size unless you have home switches, as without these it has not reference on which to base the size. Incidentally to set the size you can adjust $130 and $131 Grbl parameters, this can be automated using T2Laser, you set the Sketch size and then click in the menu to set the Machine Size and it will update the parameters (but again, without home switches there is no reason to do this).

@Proape If you use software such as T2Laser it will do this automatically once you set laser max to 40 or 45, but if you want to write your own G-code that is the command you would use.

@SargeCo The TTL connection is correct but I am not familiar with that laser module so can't tell you if the power is correctly wired. It looks like maybe the power is the right 2 connections with power in center?

@Proape It sounds like the firmware is not configured correctly, I can't help with this software but you need to set it for Cartesian coordinates.

In T2Laser you can select it from the Configure EleksMana menu, it also allows you to select either laser or servo mode. Your software may have something similar.

@Proape The pen uses the D11 output which is controlled by S (spindle) values, so to lower it you would send M03 S40 and to raise it up M05. I don't know about your software but T2Laser works with a pen plotter and has features not found in other software such as pen changes for multiple color designs.