hi , I am working on a project in which i want to transmit data (text) from pc via laser, receive it via a Photodiode, and the text will displayed on lcd.
the problem is that i don't know what must i use to encode and modulate the data and how to code either of them. Any help? 
This Serial IR Thread may be of interest.
...R
Hi,
Welcome to the forum.
Have you googled
arduino laser communication
Tom... 