A WiFi-controlled RC car built on a NodeMCU (ESP8266). The board runs as a WiFi access point and serves HTTP commands; a small HTML/JavaScript page on your phone sends direction and speed commands, and an L298N driver moves the four DC motors.
Course: Digital Logic Design (DLD), 2nd semester Submitted to: Engr. Romaisa Shamshad Khan Team: Moavia Amir (2k24_BSAI_72), Muhammad Dawood (2k24_BSAI_48), Fatima Hassan (2k24_BSAI_07), Javeria Babar (2k24_BSAI_14)
- NodeMCU ESP8266
- L298N motor driver
- 4x DC motors with wheels
- Chassis
- 7.4V battery pack
- Jumper wires
- A smartphone (or any browser) for control
Pin mapping used in code/rc_car_controller.ino:
| L298N pin | GPIO | NodeMCU pin | Role |
|---|---|---|---|
| ENA | 14 | D5 | Right motor speed (PWM) |
| ENB | 12 | D6 | Left motor speed (PWM) |
| IN1 | 15 | D8 | Right motor direction |
| IN2 | 13 | D7 | Right motor direction |
| IN3 | 2 | D4 | Left motor direction |
| IN4 | 0 | D3 | Left motor direction |
A circuit diagram, proposal, and report are in docs/.
- Open
code/rc_car_controller.inoin the Arduino IDE (with ESP8266 board support installed) and upload it to the NodeMCU. - Power the car. The board creates an access point named
Coding Moves RC+with passwordcodingmoves_123. - Connect your phone to that network and open
interface/index.htmlin the browser. It sends requests to the board at192.168.4.1ashttp://192.168.4.1/?State=<cmd>. - Hold the arrow buttons to drive (forward, back, left, right); releasing sends stop. The lightning buttons set speed levels (0-9 map to PWM values 400-1023 in the sketch).
code/rc_car_controller.ino— ESP8266 firmwareinterface/index.html— control pagedocs/— circuit diagram, proposal, reportimages/— photos of the build
A Coding Moves project. More at YouTube, GitHub, LinkedIn, Kaggle.