USB to send ASCII characters to PC

[aerostar]

Do a search for USB keyboard emulator, there are a couple of threads - here is one http://www.picbasic.co.uk/forum/showthread.php?t=8291, once you get the keyboard working you can the take the data from RFID and put it into a modified keyboard routine.

[Ioannis]

Thank you both. Those info are enough to get me started.

Ioannis

[towlerg]

Perhaps you could use one of the three 1 bit outputs NumLock, CapsLock and ScrollLock to implement flow control for your hardware.

[Ioannis]

George,
I do not understand where flow control is needed.

Ioannis

[towlerg]

As you will be creating another keyboard, any output will be sent to what ever window has focus.

[Ioannis]

Yes, the focus is a thing that bothers me and I wish I knew a way to deal with it.

If for any reason (and windows has a lot, I am sure) the focus is lost, data entry is lost too...

[towlerg]

Are you writing a windows app? If so you can use those control lines to allow your hardware to tx. BTW hope I'm not teaching you to suck eggs but although you might assume that pressing CapsLock etc. turn on the LED on the keyboard, in fact all it does is set a modifier bit and the keyboard driver sends a signal to operate the LED.