D16

NEM 651

Abstract: The homebrew D16 mobile DCC decoder is a single sided decoder with NEM 651 connector.

NEM 651 DCC / Railcom decoder (single sided)

Specs

PCB revision 2

  • supports common features
  • Railcom
    • DYN (Custom): Motor Current, CPU load, Context Switches, Brown out counter
  • Size: 17×11 mm (single sided PCB)
  • 7-20V track voltage
  • heartbeat LED
  • adjustable max motor current (default 250mA)
  • over temp protection
  • Function output: LF/LR (dimmable, 1.4kHz)
  • Function output: AUX1/AUX2/AUX3 logic level (solder pads)
  • optional external buffer capacitor
  • <10mA idle power consumption

Solder pads,

  • GND common ground after rectifier
  • Vtrack track voltage after rectifier
  • AUX-3 (LL) logic level output to drive LEDs
  • AUX-2 (LL) logic level output to drive LEDs
  • AUX-3 (LL) logic level output to drive LEDs

YouTube

Initial tests of my motor driver v1.0

Spinning a Minitrix 5-coil motor

Fleischmann 3-coil motor is a difficult animal

GitHub
Codeberg
User Guide
1zu160