Talk:Robostix

In the Serial port section the author states there are a total of 4 serial interfaces. Two from the AVR and two from the Gumstix both at 5V. The Robostix Spex pages says there is one set at 5V and one at 3.3. Are all four 5V as this document states or is it as the Spex page states?

Thank you

Mark Klunder