I have been using the HM7000 R7040 dongle for some 3 weeks now, and have noticed that I can operate more than one loco with a single dongle. Each new loco is initially added to the Engine Shed and set up to communicate with the dongle's Bluetooth address. I then start using one TTS/DCC loco from the engine shed on my Ipad. Once this is running I then choose another TTS/DCC loco from the Engine Shed, which is also assigned to the dongle, and start using this one. Both locos work independently of each other. I have now added 7 more TTS/DCC locos to the Engine Shed, all assigned to the same dongle, and have found that I can add and control each of the 9 locos set up on this one dongle, all working independently of each other on my Ipad. All the locos are TTS sound locos. 9 locos is my personal limit at the moment because my layout is not large enough to handle any more at one time.
The theory suggests that the Bluetooth signal from my Ipad to the dongle should only be able to control one loco independently, and that any other locos using this same Bluetooth signal should each run at the same speed/direction/etc as the the first one.
Indeed, when I assign each new TTS/DCC loco to the dongle, I have to unassign all other locos assigned to the dongle. However, once that new loco is in the Engine Shed and assigned to the dongle, I can then select it from the Engine Shed and run it without the need to unassign any of the other locos assigned to the dongle in the Engine Shed, and run it independently of the other locos at the same time.
Does any one have any ideas how this is possible?
Andrew
