Is it possible to use PWM to send data via a laser?
I am looking into making a laser tag system with an arduino and was wondering how easy it would be to make a laser diode output PWM signals, instead of using an infrared LED. I'm sure this has been considered before, but I couldn't find it anywhere!! Obviously all players would be given protective glasses to wear :)
(on a side note: I was also wondering that if it was possible, could it be used in an RGB laser, to make more than seven colours?)
Thanks in advance :)