Open the DTMF tone generator app and test your layout. The default controls are as follows:

2: Accelerate the locomotive forward.

8: Accelerate the locomotive backward.

5: Stop the locomotive.

1 and 3: 1st turnout controls.

4 and 6: 2nd turnout controls.

The remaining buttons are unused and can be used to control even more turnouts by modifying the Arduino program.

If the locomotive starts to move in the wrong direction, turn off the power and swap the wires of the power feeder track with each other.