[Gumstix-users] Power Isolation on the Robostix

[Roger M. <mailler@AI.SRI.COM>]

I'm trying to power a robostix/gumstix combo off of a single set of 4 AA ba=
tteries to drive two standard r/c servos.  As instructed on the wiki, I cut=
 the jumper between the V_motor and V_Batt which should prevent the voltage=
 regulators on the robostix from getting fried during stall, but still need=
 to power the two inputs from a single power source.=20

 The problem I am having relates to a loss of voltage to the robo/gum durin=
g the stall.  When the servos stall, the current drawn by the motors increa=
ses which causes the processors to reset.  Does anyone have a simple circui=
t that can prevent the over current from doing tge reset?

Obviously adding a second set of batteries is an option, but not a very goo=
d one.  I've also thought of adding a capacitor (any suggestions on size?)

Roger  Mailler=