> 1A per servo? Which means I will need at least 12A > buck switcher? Wow! A LARGE output capacitor on the power supply MAY save you (say 10,000uF to 100,000 uF?). Peak currents may be causing the problem rather than continuous. Depends on how many leg segments are in use at once. RM -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics