Testing the robot

This test allows you to fine-tune and correct the rotating directions of the motors:

1. Slide the power switch of the 4 x AA battery case to supply the power to the motors through the motor driver.
2. Open your Blynk app and allow it to connect with the robot.
3. Initially, the joystick handle will be at the center position. Move the handle forward and hold to drive the robot forward. Sometimes, the motors may not rotate in the forward direction and result in an erratic behavior. You can change the direction by simply swapping the two wires from the motor to the motor shield. Once you fix the forward direction of the motors, the other directions will also be fixed.
4. Move the handle to the left. The robot will make a point turn to the left continuously until you release or move the handle to a different position.
5. Release the handle to automatically return it to the center position. The robot will stop immediately.
6. Move the joystick handle backward and hold to drive the robot backward. Then...