These lines come from the overo com to that 40 pin header and are at 1.8 volt logic levels. If you are connecting to RC servos I think they need to be level shifted up to 5 volt. Also I don’t think the gallup board can supply the necessary power for 6 servos.
From: Karl Meister [mailto:firstname.lastname@example.org]
Sent: Thursday, August 04, 2011 9:27 AM
Subject: [Gumstix-users] Gallup PWM Technical Question
Sorry if this is a simple question, but I just wanted to verify something as I am working on a robotics research project and I have never worked with computer hardware enough to be confident.
On the gallup43 board, it says it has 6 PWM lines. I would be under the assumption that these could control servos after soldering some 3 pin male connectors. It looks like their are a row two joints on the side of the board for the PWM lines (and other stuff) and the third just gets grounded.
I just wanted to make sure that my assumption of using the PWMs to control servos is correct.
Thanks for the help,