The hardware for the laser setup is relatively simple. A basic PCB (printed circuit board) was developed for the various components plug in to. Prior to the PCB there were several prototyping stages, going from a breadboard to a slightly more permanent soldered strip board but these were too frustrating to work with. In the past I've created PCBs using both etching and milling but for this project the time seemed right to try some of the cheap PCB manufacturers based in China. A bare PCB and a fully populated one.