Design a Laser Projector

A laser projector produces a light display that appears to come to be coming from dozens of laser beams. In actuality, a laser projector only would like just one laser beam to generate the result for the reason the fact that beam is diffracted as it emerges out of your projector. developing your private laser projector requires a few parts from the laser supply home and some ability and knowing of electronics. The laser projector should certainly be considered a weekend project for the reason that it will consider some time to complete.

Developing the Laser


Put the newspaper comfortably on a table. Strip both ends of all for the dark and red wires utilizing the cable strippers.

Maintain the green laser pointer in your left hand and grip the entrance of it with the pliers held in your appropriate hand. Twist the pliers until the casing for the laser pointer separates.

Maintain up the back half for the laser pointer to reveal the green laser diode. Pull out the diode utilizing the tweezers. Discard the green laser pointer and put the green laser diode comfortably for the newspaper.

Twist the laser real estate among the your arms and unscrew the entrance half out of your back half. Pull the laser diode out for the back half utilizing the tweezers and replace it with the green laser diode.

Solder a dark cable for the positive get in touch with for the green laser diode as well as a red cable for the negative contact. Pull the two wires with the entrance half for the laser real estate and screw the laser real estate back together.

Solder the finish off for the dark cable out of your laser real estate for the 15 ohm resister. Solder the dark cable out of your battery snap for the 15 ohm resister. Solder the finish off for the red cable out of your laser real estate for the microswitch. Solder the red cable out of your battery snap for the microswitch.

Attach a 9 volt battery for the battery snap.

Developing the Laser Projector

Reduce out one for the sides for the shoebox with the power knife.

Reduce out a little hole inside the center for the best for the lid for the shoebox with the power knife.

Put the lid onto the shoebox. Tape the lid comfortably for the shoebox utilizing duct tape.

Assembling the Motor

Drill a little hole inside the center for the diffraction glass. place the diffraction glass aside.

Solder a dark cable for the positive get in touch with for the 3 volt motor. Solder one other finish off for the dark cable for the microswitch. Solder a dark cable for the microswitch as well as one other finish off for the positive get in touch with for the "D" battery compartment.

Solder a red cable for the negative get in touch with for the 3 volt motor.

Solder one other finish off for the red cable for the negative get in touch with for the "D" battery compartment.


Put "D" batteries into the "D" battery compartment.

Assembling the Projector

Put the whole laser assembly within for the shoebox with the cut-out facet for the shoebox. Pull the laser real estate out with the hole inside the lid for the best for the shoebox.

Place the whole engine assembly and battery parts within for the shoebox with the cut-out facet for the shoebox.

Pull the engine out with the hole inside the lid for the best for the shoebox. Place the diffraction glass for the idea for the engine shaft and solder it on. Allow the solder cool.

Place the engine comfortably on one facet for the the lid for the best for the shoebox and secure it utilizing duct tape.

Place the laser real estate comfortably for one other facet for the lid for the best for the shoebox with the laser diode aimed on the diffraction glass. Mount the laser real estate for the shoebox utilizing duct tape.


Press the change to begin the engine and spin the diffraction glass. Press the change to turn for the laser.

Tips & Warnings

• A plastic food container can be substituted for the cardboard shoe box.

• Do not stand too close to the projector when the laser beam is turned on; otherwise, the laser light could hurt your eyes.