First, you need a chassis where you mount all the components, I have used MDF for the body (chassis), then I have glued the motor on the MDF, then I mount the Esp8266, L289n, Battery holder, and Smart-phone(I don't have probable WiFi router like Jio-Fi, so I used an old, damage phone) then connected all the things according to the schematic and prepare the Blynk app according to the project wrote the code, then burn the code in the Nodemcu and tested the car.
Burn the code:-You need to install the ESP8266 board in the Arduino IDE board and install the Blynk library and then change your WiFi credentials and the auth code of your Blynk app in the code and then burn the code.
Install the board:-1 . File -> Preferences (or Ctrl+Comma)
2. Copy and paste this link in the "Additional Boards Manager URLs: " - https://arduino.esp8266.com/stable/package_esp8266com_index.json and click ok
3. Tools -> Board -> Boards Manager...
4. Search esp8266 and install the esp8266 from ESP8266 Community
Installing the library:-1. Sketch -> Include Library -> Manage Libraries... (or Ctrl+Shift+I )
2. Search for Blynk and install the Blynk library by Volodymyr Shymanskyy
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