Arduino Forum

Forum 2005-2010 (read only) => Hardware => Development => Topic started by: bonkowski on Aug 23, 2006, 12:42 pm

Title: USB connector pins reversed in schematic
Post by: bonkowski on Aug 23, 2006, 12:42 pm
I've discovered (the hard way) that the USB pins on the arduino schematic are mapped backwards.

They should be:
Pin:     Function:
1         +5V
2         USB data -
3         USB data +
4         GND

But unfortunately in power/gnd and the two data lines are reversed, which then reverses the pins on the board layout.

So if you are going to develop something based on the arduino board schematic, then just be sure to disconnect the connector in the schematic, flip it, and then reconnect it.