Delta kossel laser

This is my version to equip a 3D printer with a laser head.
Two objects are offered, a platform with magnetic attachments and a laser head holder what is attached to the platform.
Magnetic mount project can be found here:
https://www.thingiverse.com/thing:4177769


I am using a 5V 1500mW laser which was previously ordered from Aliexpress: https://www.aliexpress.com/item/33019893763.html?spm=a2g0s.9042311.0.0.27424c4dgifHtx

To attach the laser to the trigorilla board, I soldered a small transition circuit shown in the figure, for PWM support to laser. NOTE, in my case the laser works with 5V, but to drive the fan, the board is giving 12V. I soldered the main power pins for PWM - 5V and GND straight to the 3d printer board, but it turned out that the whole 5V bus is connected, which means that you can connect anywhere where 5V or GND is marked, the PWM signal line is connected to 12V output "FAN 0". If you use a different type of laser or 3D printer, the connection may be diffe