i want to make a transmitter and receiver for communication of range around 100 meters ??

Re-design6 years ago

Take a look at this kit.

If it's not what you want, G00gle "laser beam communicator".
arihant6 years ago
try this link...and search the rest site...
orksecurity6 years ago
Probably cheaper to buy than to build, unless there's something special about it.