Iron Planet Hobbies

NixTrainz Decoder Buddy ~ Version 5B ~ 12 Outputs ~ For 21 Pin Decoders ~ NTZ5


The Decoder Buddy V5 and V5B were developed for the 12 output decoders and include a couple added features.

This mother board does not include the 21-Pin Decoder.

This mother board requires soldering.

This printed circuit board is NOT INTENDED FOR USE IN A DC SYSTEM. However, if the decoder you are using supports DC operation it should work.

The V5 and V5B come with standard 2.2K resistors onboard.



The mother board includes:

  • One 21 Pin Decoder receptacle
  • Two pairs of track input pads
  • One pair of motor input pads
  • One set of stay alive pads (U+, GND on the V5. The V5B has the “W” pad for a Power Pack)
  • Two pairs of speaker pads in parallel by side
  • 12 lighting outputs on a separable “small connector board”
  • Lighting outputs A11 and A12 are replicated on the “motherboard”


Resistors for use with LED lighting. The “0” ohm resistors accommodate previously installed LEDs with resistors in line and “12-volt LEDs”. 

It is IMPORTANT to realize that resistors must be used when LEDs are connected to the lighting outputs of the custom “0” Ohm boards!!!


Thanks For Looking!

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