This may be a stupid questions (ie impossible), but I figured it was worth asking about.
I've finally gotten around to playing with an Arduino I bought a couple months ago and ordered a Parallax RFID reader for it. I must have been sleepy when I ordered it because I accidentally bought the USB version instead of the serial.
My question is, because the Arduino uses FTDI USB->Serial and the Parallax uses FTDI->Serial as well, is it at all possible to interface the two using the USB port on the Arduino?
I had thought about trying to "leech" the serial data directly from the headers that lead into the FTDI chip, but everything is so compact on the board that I can really tell where the two link. Worst case, I'll order the serial unit and wait the week or so it takes to get here.
I had thought about trying to "leech" the serial data directly from the headers that lead into the FTDI chip, but everything is so compact on the board that I can really tell where the two link. Worst case, I'll order the serial unit and wait the week or so it takes to get here.
That would be about the only way. As both the Arduino and your RFDI devices are USB slave devices, neither is a USB host, so they can't talk directly to each other. A awkward method is to plug both into your PC and write a simple PC program that routes the serial data to and from both devices, but that would permanently tether both devices to the PC to function.
Yeah, I figured as much. I was hoping there would be some sort of way to spoof a host but I guess that would be more hardware-based than anything. Welp, there goes another :-/ $40.
