In this guide, we learned how to build a mobile robot based on the ESP8266 WiFi chip, and on the Adafruit Mini Robot Rover Chassis Kit. We first assembled the robot, and configured it so it accepts commands via WiFi. We then controlled the robot using a graphical interface running in your web browser.
There are of course many ways to now improve the project, based on what you learned in this guide. You could for example add a distance sensor in front of the robot, and have the measured distance displayed inside the same interface. You could also couple a gyroscope to the robot, and have more complex functions like making the robot turn from a given angle. The possibilities offered by this excellent chassis & the ESP8266 WiFi chip are endless, so don't hesitate to experiment and have fun!