Laser Pattern Project

I built a cheap laser pattern generator from stuff I found lying around my house and a few store bought items, I think I spent <$10. Here I am including the plans for the circuit and pictures of the finished project. Once upon a time I also took pictures of the patterns using a digital camera, but the shutter speed was too fast, so only part of the pattern was viewable.

Putting it together:

• Old alarm box where you can mount stuff
• 3 dc motors taken from cheesy air freshner units (they were the fans)
• 3 small round mirrors (taken from little cosmetic units)
• 3 strong magnets
• 3 conduit clamps
• 3 L shaped brackets
• some aligator clips
• Power chord
• Some wire
• Common sense
• One laser

Circuits
So stupidly simple you can do it! just setup the voltage regulators; One fixed, and two adjustable, and BAM!

Parts List:

• Old alarm box where you can mount stuff
• 3 x LM317 Adjustable Voltage regulator
• 3 x pots for voltage regulator
• 3 x bias resistors
• 4 diodes or one bridge rectifier thingie
• 1 transformer
• at least one big capacitor >1000uF
• DPDT switch
• SPST switch

Pictures:

Outside of the device.	Control knobs on the outside	Inside of the device.	Circuit board
Pattern 1	Pattern 2	Pattern 3