The basics of DCC at “Brolgan Road”.
Ground zero is near the main station Brolgan Road. A laptop slides out from beneath the layout when required. Left to right on the fascia: Brolgan Road Panel; the only NCE cab bus outlet (no others required with radio); a switch to isolate Brolgan Road DCC sub bus and the Procab. The shelf underneath houses L to R: a 12V power supply for the Canbus/ servos/ ancillaries; a grey box controlling power to the layout via DCC or DC (rarely used – just for testing); two track sections used as “Programming Tracks” – one for JMRI and the other for the Lok-programmer (shown below).
JMRI stands for “Java Model Railroad Interface” – it is an open source program for model railway (railroad) hobbyists. It includes DecoderPro, Panel Pro and a Throttle. The computer above runs on the house WiFi and in my case I have a WiFi extender in the layout room as the signal from the router (modem) in the house is patchy.
Other throttles which can be used include:
- smart phones,
… using either “Engine Driver” app on Android or WiThrottle on Mac. Phones need to connect to the WiFi network in the layout room.
The DCC signal is fed to the rails and provides power to the loco; control of the loco(s) and other devices; and sound – if the decoder is so equipped. On the photo above the DCC main bus is “A”. There are some excellent websites explaining DCC operation and wiring and one of the best is by Marcus Amman at Main North.
The other Bus pairs shown above are:
B – 12 volts to power servos and other equipment.
C – DCC sub-Bus (because even though you can run ALL of your layout on the main DCC bus, it is bad practice when it comes to fault finding short circuits or other problems. Much better to isolate areas so that the fault can be found and operations can continue on the rest of the layout.
D – my CANBUS which is a control system which manages everything on my layout. See the post on MERG.
On the drawing board is a lot more material on DCC for future posts… Rick