Minimized the transmitter design a bit. The original was a bit too power hungry, this one will run on a 9V for a long time and is smaller, even if the case doesn't take advantage of how small the components are.
Still playing with where to locate the rotary encoder. So far I like it best on the side of the transmitter. It makes it hard to operate with the other hand as you can see in the video demo. Had to hold the camera with my right hand. (sorry for the shaky video)
The radio control for the locomotives is working great, simultaneously running 16 locomotives with bell, whistle and one additional accessory along with 100 non-locomotive accessories such as turnouts, lights, etc.
It is amazing what can be done with little 434MHz radios. Not high bandwidth but pretty reliable at 100 yard distances.