This project is designed to support your children's interest in classical toys. Probably you already have a train toy set box, any one loco with electric motors drive is suitable. Rolling the train around in a circle is quite boring, so we'll add flashing lights when driving and controlling from any Android tablet or phone.
For group games, you can remake several locomotives, each of which can be controlled by a separate tablet or phone. If you look at the photo of the uncovered locomotive, you will also see the IR sensor. More on www.arduinorailwaycontrol.com
Before running my application, pair your device and the Bluetooth module HC-06 or yours Bluetooth shield way through the Android settings. (see video).