​Well my hope from the beginning was some how use the board it came with (which is called EBB Control Board) to interface the laser and controls .This idea unfortunately did not work out for that the programming of their board was specifically designed to only do so much which did not include adding a high powered laser .At least from what I could see that the commands available we would not work out how I would like.

So from that small headache, I came into the idea that I would have to add a switch to a separate micro controller.For those that don't know how the watercolorbot works the bot simply has a servo that raises and lowers the head which is where the pen or pencil would be.Because the head raises and lowers this gave me the idea of using a small switch to tell the arduino (We will discuss more about the arduino later on) to provide power to the Laser.So in conclusion when the head went up the laser would turn off and when the head went down the laser would turn on. In this design you don't significantly change the design of the bot.The design of this is quiet simple, I found out that double back tape is very useful in this idea for you can find the right spot for the switch without ever drilling a hole.After you get it working and in the right postion pre-drill two holes and attached it.(I will go into this later about programming it).Also you solder the farthest solder points which are negative and normally open.This micro switch can be purchased at your local radio shack.Then attach the wires to the other wire harness this is to keep it out of the way.