LEGO Mindstorms RCX, NXT, EV3 fake battery

by brm, published

LEGO Mindstorms RCX, NXT, EV3 fake battery by brm Jul 24, 2013


are you bilding LEGO Mindstorms robots? are your batteries always empty? don't have a battery at hand?
build your own PMB (poor man's battery) ... print out this fake battery to power up your Mindstorms RCX, NXT or EV3 from a power supply!

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STL files tested on a Dimension 768 BST printer with support material ... OK!
STL files tested on a Ultimaker printer without support material ... OK!

  • print out all 4 parts ...
  • organize M3 and M5 allen screws and nuts ...
  • organize LED and resistor for 9V, some wire and a jack ...
  • I would suggest a 9V DC power supply with at least 2000mA current ...
  • solder ... play ... have fun!

Do not try to build this adapter if you don't know what you are doing!
I shall not be held responsible if you burn your RCX, NXT or EV3 with incorrect voltage or bad polarity!