On Fri, 26 Apr 1996, Prashant Bhandary wrote: > A new standard, DCC, has been established for model trains. The signal is > sent through the tracks. Normally the train has connections going directly > from the tracks to the motor and you control speed and direction by > controlling the voltage on the rails. But in this case, a decoder sits > in between and decodes the packet and drives the motor appropriately. > Now the decoder should fit inside a train and the scale of the train > defines the magnitude of the problem. I model N scale which is 1:160 > and believe me when I say tiiiny I mean every i in that word. Unlimited possibilities! Multiple trains on a track. Collision detection. Trains talking to trains. Trains talking to signals. Signals talking to trains. Signals talking to signals. Trains switching points. Signals switching points. Power down features. ... :-) ________________________________________________ Mike Sunners W +61 8 223 2519