Step 8: Alternate construction and Theory

Instead of using a battery and solar resistor, you could just use a small solar panel. However, these are more expensive and tend to break more easily.

Theory: It may be possible to bounce the laser of glass behind which a conversation is occuring (such as a window) and pick up the sounds on the reciever, but I've yet to test it. Please let me know if anyone has tried this or has a better way to do this.
bustedit7 years ago
Does altering the laser beam effect the output sound? Could I blow smoke across the beam or something, or would that be too much and just interrupt the signal altogether?
navaburo7 years ago
I have given this a try, and made an instructable about it!