Unexpected use of an old push-button telephone. Several parts cut out of cardboard, LED lamp and lens. That’s all you need to make a projector. Details below.
How to make a very simple projector for viewing pictures and videos
In order for the LED lamp to work more efficiently in a future projector, it will have to be improved to improve the focusing of the light flux. To do this, a part of the diffuser is sawn off with a hacksaw.
You need access to the board with the LEDs located on it. In order for the light transmission to be in one direction, a new reflector is made of cardboard. For better light transmission, foil is glued on the edge of the reflector.
The finished design is fixed on the LED lamp with hot glue.
The following operations require the utmost care and attention. Disassembled old cell phone. The purpose of the disassembly is to refine the liquid crystal matrix.
Carefully remove the plastic case of the device. The speaker is removed. On the reverse side of the LCD matrix, the backlight diffuser and all substrate layers are removed. The main thing is not to damage the cable.
The result of the work is the fixing of the LCD screen on the previously manufactured new reflector of the LED lamp. All the same hot glue.
We do not bother about the manufacture of the base of the structure. Suitable trimmings of wooden products are used. Unsoldering the phone battery terminals and fixing the entire structure to a wooden base is a simple task. Where without hot glue? It is necessary to arrange the structure so that there is free access to the keyboard of the former phone. It will control the device. Made.
In order for the image transmitted by the projector to be larger than the size of a matchbox, it is necessary to install an additional lens. Everyone remembers the old Soviet KVN TVs? Nobody remembers… Well, it doesn’t matter. To help all the same cardboard and … hot glue!
And now check what happened in the end.
Power is supplied to the LED lamp, a video file is launched on the phone. Wow!
Watch the video