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Control your Computer... with a LASER!

Step 4Add Clickability

Add Clickability
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  • IMG_0207.JPG
  • IMG_0206.JPG
  • ldr.jpg
Adding clickability is so easy!
You only need these parts:
  • LDR (about $0.50, available at any electronics store. Also called a Photo Resistor)
  • Straw (this will be used to make the barrel for the LDR)
  • Electrical Tape (to "insulate" the barrel from light)

First, open up the mouse and find the button controlling the left mouse click. Solder two wires to the button leads.

Next, go ahead and create the barrel by wrapping the straw in electrical tape. Make sure no light can pass through the side of the straw.

Go ahead and solder the Photo Resistor to the two wires sticking out of the mouse (there is no polarity). When the photo resistor does not contact light, there is a lot of resistance. When it does contact light, there is very little resistance (this simulates a button click).

Lastly, insert the LDR into the barrel and tape it in place.

You're DONE!!!!

To click,shine the laser into the barrel. It's as simple as that!
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1 comment
Mar 10, 2009. 4:56 PMLupus420 says:
If you wanted to, could you also hook up another one of these to the right mouse button using the same procedure?
Mar 10, 2009. 6:18 PMeomonkeyboi24 says:
Why couldn't you? The only thing is you would have to keep the photo resistor away from the other one otherwise they would click both the mouse buttons.

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