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if you run your loco with a DC controller, in general you can get no or maybe a few sounds out of your loco whether it has a sound decoder fitted or notif you take exactly the setup above including an HM 7000 sound decoder in the loco, you can now download the App, use that to control the loco and you will get full sound capability from the loco OK, so just to be absolutly clear what is stated in the video below at 10:35 is wrong? Yes or No answer please.

OK I read the rest of the thread now. It seems the video at is not quite correct. As I understand it if the track is powered with DC (either by directly connecting a power supply or an analogue controller turned up to max) then a HM7000 sound decoder will produce sound provide there is enough current. 1A is marginal. Could an expert confirm or contradict the above please? At what current is the sound not marginal? Thank you.

There is conflicting information here, as SeanTT correctly points out the video below says that if the track is powered with DC then there will be no sound from HM7000 sound decoders. In this case a hardware DCC controller is required to provide power to the track and that is a considerable extra expence if not already owned (which for a new TT hobbyist it probably wouldn't be). Could anyone throw light on which interpretation is correct please? Thank you. I would have thought that any hardware DCC controller, not just Hornby's, could be used for this purpose, since it only seems to be the DCC wave form on the track that is required to get sound. Anyone know?

What is the reliable range of the control from loco/decoder to smartphone? If the loco/decoder goes out of range, does it just keep going and does it automatically reconnect and come back under control when it comes back into range? What protocol is used over the bluetooth? Is it straight bog standard DCC so that other manufacturesr/hobbists can provide their own handsets, or some proprietary format? A propriatary format would make sence to get over the 'broadcast only' nature of DCC control, thus quickly draining handset battery life. Handests with real tactile control knobs could be needed in the future (they can be used while concentrating on the train and not having to look at a screen and concentrate on that) and also to get over the problem of not being able to read a smartphone/tablet screen in bright (sun)light. Would Hornby provide a handset in the future that could be used instead of a smartphone/tablet? Will standalone accessory decoders with bluetooth be available for controlling points/lights/uncouplers etc? Thanking you in advance for answers/comments on my questions. I'm sure there are other things I will want to ask in the future. It seems like a good system good on Hornby for bringing this out.

Make a model of a Formula E car. An electric racing car modelled as err an electric racing car! Also since they are all the same only one set of tools is required and multiple paint jobs can be used to create multiple cars. The red light on the rear would be easy to model. Also I would like to suggest cars with sound. In model trains you can get sound, why not with cars?