Sending Commands from Visual Basic about IR to Pic

[mister_e]

I would suggest you try to send data to your PC to a terminal software first (Hyperterm, MicroCode Serial communicator or whatever else).

Then from your PC to your PIC.

I you have good results, then move on VB. I had some bad experiments in the past on some computer on low baudrate.

High likely, you're using the internal OSC of your PIC? Don't forget at least the OSCCAL_1K define. Not a bad idea to use DEBUG/DEBUGIN as well. It perform better on some case.

Use current limiting resistor & the InvertedMode on the PIC side, and it should work on small distance between your PIC and the PC.

On VB side, I would suggest you to use ReadLine. To use it, you'll need to modify your PIC code to send a LF character (10) at the end.