Just revisiting this after a break from modelling. Looks like things are really coming along. With the Deltang system, BPR/C looks to be readily achieved, even for O gauge. Time to purchase a test setup and then look to sell all the DCC stuff!
Having spent a bit of my time with computers, I would prefer to play trains, not computer games, so I want hand held controllers with regulators/cutoff/brake handles etc. I don't want a computer controlled layout/touchscreens/phones/tablets etc. I love the experience of sound and don't intend to exhibit (tho I have and could do so again).
I've fired a bunch of questions at David from Deltang, mostly about customising the tx box to have more use specific buttons, and also about sound.
Following on from Robin2's posts, I'm pondering options including;
*onboard sound (likely to be a long wait for a modest result. You can't get past the physics of small speakers)
*under layout sound using Deltang tx and the rx transmits engine speed and load, and we have something such as a raspberry pi listening to both transmission and then generating load and speed dependant sounds. Taking this further would be detection (rfid?) so that the sound can be faded appropriately around the layout. Could also have other triggers for rail joints/points etc
*drop the Deltang tx and just use the Deltang RX as deltino as Robin2 has done, talking to a Rasberry Pi, which does all the smarts including sound per above