View Single Post
  #1   Spotlight this post!  
Unread 07-02-2006, 02:31
SteveO SteveO is offline
Registered User
no team
 
Join Date: Jan 2003
Rookie Year: 2003
Location: NV
Posts: 122
SteveO will become famous soon enoughSteveO will become famous soon enough
Lego RCX Polarity Question

Hey there,

Does anyone know if the DC port on the back of the Mindstorms RCX is tip positive or tip negative? I have tried to determine it, but you can't tell just by looking inside, multimeter tests etc. I already have a 9V adapter with various connectors, it would be great if I could use it for this project and save some cash (college student budget). Just wanting to make sure before I fry one of these. Last semester I fried an instrumentation amp or two by reversing the polarity; an RCX is quite a bit pricier than those.

Thanks!
Reply With Quote