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Author Topic: USB vs Serial arduino?  (Read 448 times)
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I dont get the difference does it mean the code will have to be different?
also I have a USB parallax rfid reader and a USB arduino duemilanove If I get a USB host sheild are these compatible?
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The serial Arduino is the "Old" Arduino from the days when PC's still had serial ports.

USB Arduino is the "new" Arduino, implementing the serial communication over a USB connection. It's still serial though, and programming wise there is no difference. The USB / serial is implemented by the tiny little FTDI chip on the (USB) Arduino board. On the PC there is a driver that implements a virtual serial port, which seen from a programming perspective is just like any "real" serial port.

Unless you specifically want to use your Arduino with a PC with a "real" serial port, you should get an Arduino board with a USB "serial port"

Sorry i don't know about the USB RFID reader.
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