New to programming, trying to accomplish the following

[Nigel Goodwin]

Once i did use UART signals over cheap RF modules and it worked no problem as long as the baud rate was kept low enough. The modules ware rated for 2400bps only anyway. UART worked at that speed but about every 50th character was corrupt but using a lower speed it worked no problem. But i cant be positive if it works like that for IR too since i havent tryed that.

But how can you trust something you already know has problems?, by doing it properly you overcome those limitations.

 

[crazylegsmurphy]

As I understand it, RS-232 comms (serial communications) needs tight timing, controlled by a clock signal, to work right. Going over an IR or RF link, there is no common clock signal and this messes up the timing. Therefore, other encoding schemes are used instead.

Is this because the MCU itself doesn't have a reliable enough internal clock for such a timing sensitive situation?

 

[Nigel Goodwin]

Is this because the MCU itself doesn't have a reliable enough internal clock for such a timing sensitive situation?

No, the internal clock is perfectly fine, it's (as I've said repeatedly) that the link doesn't accurately maintain the width of the pulses.

 

[Boomslang]

You could also try 40KHz transducers, put the RX on the one board and TX on the other. You will need an op-amp circuit on the reciever side, but that will also help to set the sensitivity.