Laser Module Supply
This circuit is a general purpose LM317 variable voltage supply used to power a small laser module. It mounts directly to a Dremel drill press by slipping into a notch on the top plastic piece. The laser is used to indicate where the drill bit will hit the substrate, circuit boards in my case. This design can be used as a general purpose variable power supply for other projects as well.
To set the correct voltage, use a multimeter to measure the output voltage while adjusting the potentiometer.