DCC Auto-Reverse loop circuit using Arduino

If you have Reversing loop in your model railway Layout or if you plan to add one in future this video is for you. Enjoy!
List of Electronic components used -
1x Arduino Uno or Nano
1x ACS712 Sensor (5 amp)
1x DPDT Relay
1x 2N2222 NPN Transistor (5 Volts)
1x 10k Ohm Resister
1x 330 ohm Resister
1x IN4148 Diode
1x LED
separate 5v supply required for the Auto-reverse circuit.
Arduino Code - github.com/bkr...