Components REQD.: ***1) Arduino UNO --2) Bluetooth Module HC-05 --3) Smart Phone --4) IC L293D --5) DC Motor --6) Solderless Breadboard --7) Jumper Wires --

Notes:

1) Unplug the TX & RX while uploading the code to Arduino

2) TX in Bluetooth is connected to RX in Arduino
   and RX in Bluetooth is connected to TX in Arduino

3) It's reqruired an application for bluetooth for the
   smart phone, "Blue term" for example

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Final Result:

Press "0" : no rotation "STOP"
Press "1" : rotation in right dir.
Press "2" : rotation in left dir.