Hi Folks. I've built an arduino nano based DCC decoder. This hardware uses the DCCpp library code (with a minor bug fix for 4 digit addressing) to implement a multifunction device. At the moment I have it able to toggle the arduino nano led, use the throttle to control a fan, and also as the "brake sled." The brake sled is simply a 2 amp load that is dumped on the track using a relay. The device is powered off the track and jmri is quite happy to control it. No KICAD files yet. I'll put more info up on my web site later.... (yawn) https://dcc.wraith.sf.ca.us/ Spike
I've created a schematic for the dcc brake sled and it can be found on my https://dcc.wraith.sf.ca.us/ web site. My inclination for a PC layout is free-form, rather than a specific form factor. The jlcpcb fabber lets you have a pretty big board at their bottom-feeder pricing. I much prefer power circuits to be laid out "sparsely" and not crammed together "power-brick-meltdown" fashion. Cough. Spike Maul
