Circuit Diagram:

The robot chassis which I am using in this Bluetooth Controlled Robot Car project is supplied with 4 geared motors. Since L298N has slots for only two motors, I have joined the left side motors as one set and the right side motors as other set and connected both these sets to the output of L298N Module.
NOTE: I have used L298N Motor Driver Module to drive the motors of the robot. You can use either this one or L293D Motor Driver Module. If you are using L293D, then check out for the connections.
The code is attached with this repo. Click Here
Download the Arduino IDE by visiting the Link and install it in your System
Download the Android App Connect with the Bluetooth and Control Your Bot!
