DIY DCC Decoder

Hello, everyone!

The fact that I’m usually more of a reader of forums can be seen from the number of my posts. Today, however, I would like to introduce you to a project of mine that may be of interest to one or the other. The project is a more or less full-fledged self-made DCC locomotive decoder. Both the software and the hardware are open-source. Below are a few key points:

  • Dimensions of 25x20mm

  • Motor control

  • 128 speed levels

  • 4 auxiliary outputs

  • 6 more GPIO (currently only as output)

  • Programmable on the programming track

  • Functions can switch any outputs

  • Both GPIO and Aux outputs can be configured as PWM

Decoder

The documentation is in English and can be found in the

i made a home made dcc decoder [no sound] for about ten bucks maybe five years ago … i used the firmware from merg, but updated the components as required …

they worked well, got them premade [pcb/parts/assembly] by another fellow, very fast turnaround, shipping was included in the 10 [us] price…

Is this the firmware you mentioned? Quite impressive as it seems like its all written in assembly.

i used the dec12-13 file, and yes it’s done in assembly … quite fast and easy to modify [i just added firebox flicker] …

the parts list is a bit outdated though, i brought it closer to date at that time [five years ago] …