ESP32 robot car controller

This fork will impliment I2C commander

ESP32 robot car controller is a small web-server + web page project for ESP32. It is designed to control a small differential drive mobile robot prototype. This is how web-page looks:

You can watch a project demo here.

Project is designed using:

• platformIO;
• arduino framework for ESP32;
• mostly C code wrapped around default C++ stuff for arduino.
• plain HTML/CSS/JS;
• FlexJoystick library for interactable joysticks.

Main features

• ESP32 is configured as a wi-fi access point;
• name and password of access point are generated automatically based on how many other similar robots (wi-fi access points) are around;
• only a single device can be connected to an access point at a time;
• ESP32 can serve a single web-page, styles file and js file to a client;
• client web-page has 2 joysticks to control differential drive robot;
• client and server communicate using WebSockets;
• WebSockets are implemented using ESPAsyncWebServer.h library;
• client constantly tries to reconnect to the server if connection is lost;
• web-page displays the name of the robot it is connected to and connection status;
• motors on the robot are controlled by STM32 that is not a part of this project;
• ESP32 communicates with STM32 using simple UART-based protocol.

How to test the web-page

1. upload the firmware to any ESP32 controller using PlatformIO;
2. upload the filesystem image to your ESP32. If you don't know how to do it here is a guide;
3. using any device connect to a new wi-fi access point. It will be called esp_robot_1 and will have password password_1;
4. open any browser and go to 192.168.4.1;
5. plary around!

Contributions

This project is free to use by anyone brave enough to figure it out.

This project is mostly a prototype for our team. We will be grateful for suggestions and ideas, but help is probably not needed.