If it is difficult to build the previous circuit and set everything up, there is an easy way to do so with your Android phone. You can manually control either using a virtual joystick or the tilt of the phone.
Here is the Android application you can use for this:
https://play.google.com/store/apps/details?id=com.robotca.ControlApp.
The application's name is ROS Control. You can also search on Google Play Store for it.
Here is the procedure to connect your Android phone to a ROS environment:
Initially, you have to connect both your PC and Android device to a local Wi-Fi network in which each device can communicate with each other using IP addresses.
After connecting to the same network, you have to start ...
