How to Build an LED Projector
An LED slide projector has many advantages over a conventional slide projector that uses an incandescent light to "throw" an image onto a wall or screen. The LED projector uses less electrical power to run, doesn't generate any significant heat during its use and also lasts longer than a bulb. Making an LED projector can be done by just about anyone willing to spend the time and effort needed. This will demonstrate the advantages of an LED projector over one using a bulb.
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Things You'll Need
- Wood drill
- Wood screws
- Electric screwdriver
- LED flashlight
- Long piece of wood
- Two wood blocks
- Wood pieces
- Two optical glass frames
- +4 strength optical glass
- +5 strength optical glass
- Wood pegs
- Wood glue
- Super glue
- Flat edged screwdriver
Instructions
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1
Take the long piece of wood and use the electric screwdriver to screw it to the two wood blocks with wood screws, one at each side so that the piece of wood "floats" over the surface of the work table.
Take the LED flashlight and glue a peg to the bottom using super glue. Let the glue dry. Place the LED flashlight into one end of the long piece of wood by inserting the peg into the hole.
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2
Take the +4 strength magnifying glass and build a frame around it with the wood pieces. Screw the wood pieces together with wood screws. Glue a peg into the bottom of the frame with wood glue. Let the glue dry.
Place the wood frame with the +4 strength optical glass at the other end of the long piece of wood by inserting the peg into the hole.
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3
Make another frame surrounding the +5 strength optical glass. Screw the wood pieces together with wood screws. Glue a peg into the bottom of the frame with wood glue. Let the glue dry. Place this frame behind the other frame by inserting the peg into the hole behind the frame at the end of the long piece of wood.
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4
Take a wood piece and use the flat edged screwdriver to gouge out a small slit the length of the wood. Glue a peg to the bottom of the piece of wood with wood glue. Let the glue dry. Insert a slide upside down into the slit on the wood. Insert the peg into the channel in the center of the long piece of wood.
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5
Take the long piece of wood and place it facing a wall. Turn off the lights. Turn on the LED flashlight. Line up the wood with the slide on it with the frames holding the optical glass. Move the piece of wood holding the slide forward and backwards to focus the image being projected through the lens. Look at the image being projected.
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Tips & Warnings
Be sure to line up the LED flashlight, slide holder and the two magnifying frames. This can be done by varying the size of the pegs each is attached to in relationship to the others.
Super glue can pull off flesh if handled incorrectly. Wearing gloves while using super glue is recommended, as is using the super glue in a well ventilated area.
