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hey guys I wanted to add UART function to my Atmega8 form the $50 robot, but I was wondering If i could, open a usb and connect the usb's tx and rx directly to my atmega8...But I saw the UART tutorial and there was this CP2102, but for what use this thing? Cant i just go form my usb to the atmega8?The USB has data (+) and data (-)... which one is RX and TX???
Haha, but the one you gave me is from USB to rs232 right? So I would need for example a max232?
First look up UART, asynchronous serial, RS232 and USB in Wiki to learn about these.
old pc rs232 was active high (+9v, +12v, etc) but modern serial is overwhelmingly reversed to active low (0v).