D14

Mtx V200

Minitirx V200

Abstract: The homebrew D14 mobile DCC decoder is a drop in replacement of the original analog Minitrix (#11129, #12402, #12532) PCB. The decoder has been tailored to fit this locomotive.

V200 DCC decoder PCB

Specs

PCB revision 1

  • Common features
  • Railcom
    • DYN (Custom): Motor Current, CPU load, Context Switches, Brown out counter, Euler/Quaternion orientation for nick/roll/yaw
  • heartbeat LED
  • adjustable motor current (default 200mA)
  • Function output: LV/LR (dimmable headlights)
  • Function output: AUX1/AUX2 (dimmable taillights)
  • Function output: AUX3/AUX4 for driver cabin (LEDs on PCB)
  • Function output: AUX5, AUX6 open drain (each 250mA)
  • onboard 2x 330uF + 12x 22uF buffer capacity (inrush limited)
  • optional 9-axis motion sensor
  • 10mA idle current (20mA with motion sensor active)

Solder pads,

  • GND common ground after rectifier
  • Vtrack voltage after rectifier
  • DCC-L/R pads for connecting the tracks
  • Motor-L/R pads for connecting the motor
  • 3.3V common voltage for front/rear lights
    • LED white
    • LED red
  • AUX-5 (OD) open drain output against GND (250mA)
  • AUX-6 (OD) open drain output against GND (250mA)

Gallery

YouTube

GitHub
User Guide
Spur-N DB