This picture shows the addition of a relay board on the left to turn the laser on and off.
This is the laser at work.
Here is the results.
This is the video on YouTube.
This next video is of engraving an image with the laser.
Here is the latest results.
Here is a picture of my software setup. The image is processed with 3dpBurner Image2Gcode. Then Universal G code Sender sends it to the CNC.