Quote Originally Posted by sswcharlie View Post
Hi
Are there any circuits and code for communication between pic with bidirectional leds.
hey have been touted as a replacement for rfid. All I want is to get a unique code back to the master/reader pic and/or my PC.
Thanks
Charlie
A bidirectional LED is generally regarded as 2 LEDs (usually a RED and a GREEN LED)
in the same package, with the polarities reversed, thereby you put current across the LED in one direction, it lights up RED, reverse the current and the LED lights up GREEN.

I don't see how these would be a replacement for RFID in any way....unless I'm stuck in the past or something...