how to make an overhead projector
An overhead projector allows for a much more presentable display of information. It can be used when presenting to a group or when writing a report because it eliminates the use of paper. The following will show you how to make your own and then give you some ideas on how to use it.
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Step 1: Find an overhead projector image that is approximately one and half times larger than the transparency sheet (this creates enough space for the frame).
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Step 2: Print out your desired image and transparency sheet onto two pieces of thin paper (preferably thin but sturdy). The photo paper inkjet printers work well because they are inexpensive and produce images with high contrasts, which make them easier to see on screen.
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Making an overhead projector is a great way to engage your students during a lecture. An overhead projector is a useful tool for teachers as it allows the material to be visible by one or more individuals without requiring them to look at the front of the room where another speaker might be standing. This can be especially useful in a lecture environment where the speaker is at the front of the room and their voice does not travel to each individual in the classroom. The overhead projector is also great for classroom presentations because it allows for those with less attention span to see exactly what information is being presented.
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Since an overhead projector is used to project material onto a screen, students who are participating in these presentations need eyeglasses or large reading glasses to use in order to be able to view the material projected on the screen.
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Step 1: Attach your projector and prepare your room for use. A projector requires two power sources. One is the projector itself, which can take two types of power. One is AC power and the other is DC power. If you are using an electric projector, you will need to have a cord that will plug into your wall socket. You are able to purchase this cable or make it yourself.
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You might want to check out how to make an overhead projector on Instructables for some help in making your own cord and possibly a case for powering your device which will be seen below:How To Make An Overhead Projector Cord
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You also need a source for AC power in order for your device to operate correctly. The easiest way to do this is to plug the AC cord in at the back of your projector.
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However, you may need to make a power plan or something similar in order to ensure that your device is safe while in operation and that it will work correctly once plugged into this power source.
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The other source of power for your projector is DC power which tends to come from batteries. The type of batteries used will vary depending on the device and how often it will be used during presentations throughout the day.
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If your device will be used more than once, you might want to consider the batteries that are used in laptops since these can be recharged quickly and tend to hold a charge for an extended period of time.
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The following link shows some tips on how to modify these types of batteries:How To Use Batteries In Projectors
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You need a DC power cable for your device in order for it to be able to use its batteries. Most devices come with this cable but you may need to purchase a separate one if you cannot find yours or if yours is damaged in any way.
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In order for your device to be able to project correctly onto the screen, you need a screen for it. You can use a large white board or chalkboard for this purpose.
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You will want to place your projector in the center of the screen so that it is in line with the center of your classroom or hall which is where you will be projecting from.
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Your area of projection should also be large enough so that more than one person at a time can look at the material being projected onto the screen. If you cannot find a suitable white board or chalkboard, you might want to consider constructing one yourself. This can be accomplished by attaching four pieces of wood onto a piece of MDF (medium density fiberboard).
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