USB to UART documentation

Forum 2005-2010 (read only) Hardware Interfacing
1

Hi!

I am writing a small article about Arduino interfacing, and I would like to include the USB to UART conversion. Is there any good documentation about this, if possible including the FTDI driver and hardware?

And can somebody tell me which FTDI chip is used on the Arduino Duemilanove?

Thanks in advance!

2

It's the FT232RL

3

As stated in this thread: http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1261313468 there are also alternatives like a nokia connector cable.
This guy has a nice writeup on it: DIY USB to Serial Cable For $3! – uCHobby.

The thing is it's a 3.3V device, but it's easily made compatible with 5V arduino's by adding 2 resistors as a voltage divider.
The driver would be the Prolific PL2303.

Though not officially supported I think.

4

Thanks guys!

I'm going to write about SPI communication too, so any info on that (especially the hardware) would also be very much appreciated.

5

I'm going to write about SPI communication too