Hand controlled Wi-Fi car

A car controlled based on hand gestures

info

Author: Popa Bogdan-Florin
GitHub Project Link: https://github.com/UPB-PMRust-Students/proiect-BogdanPopa123

Description

A device that acts as a UDP server and waits for another device to send commands to the first one. Based on the command, the car will move accordingly

• The system utilizes a gyroscope to detect the inclination which orders the command

• A motor controller to control the motors

• The commands are sent via Wi-Fi

• The gyroscope will send its params to the UDP server (the car) via Wi-Fi, and according to that it will action the motor controller

Motivation

This project represents the perfect opportunity for me to step into the embedded world, while also learning a new programming language, Rust, highly praised for its speed and safety.

I ve always been pasionate about techology. As a kid I always wondered about how toys are made, especially remote control cars. This project also helps me have a better understanding of computer networks.

Architecture

• 2 x Raspberry Pi Pico 2W 2350 - the microcontrollers of the project, serving as the "brains" of the project

• L298N motor driver - the units that commands the two motors

• 2 x motor - does the moving

• 2 x Wi-Fi chip - responsable for the communication between the two devices

Log

Week - May

Week - May

Week - May

Hardware

1. Raspberry Pi Pico 2W:

• Purpose: Controls all components.
• Function: Acts as the main controller, controlling all other modules

2. Motors:

• Purpose: Helps the car move.
• Function: Used to move the car.

3. L298N motor controller:

• Purpose: Controls the motors.
• Function: Serves as the controller of the motors, dictating their speed and rotation

4. MPU-6500:

• Purpose: Gyroscope and accelerometer.
• Function: Measures the acceleration and incline on all 3 axes.

Hardware Overview:

• The Raspberry Pi Pico controls and coordinates all components.
• The motors are used to move the car.
• The MPU-6500 Measures the acceleration and incline on all 3 axes
• The L298 Serves as the controller of the motors, dictating their speed and rotation

Schematics

Bill of Materials

Device	Usage	Price
Rapspberry Pi Pico 2W	The microcontroller	40 RON
L298	Colour Sensor	11 RON
Motor	Motor DC	15 RON
MPU-6500	Gyroscope/accelerometer	20 RON

Software

Library	Description	Usage
embassy-rp	RP2040 HAL	Access to RP2040 hardware peripherals
embassy-net	Networking stack	TCP/IP, UDP, DHCP, DNS over Ethernet/Wi-Fi
embassy-executor	Async executor	Runs async tasks on embedded devices
embassy-sync	Async synchronization	Primitives like mutexes, channels
embassy-time	Time utilities	Delays, timeouts, timers
embassy-usb	USB stack	USB device support
embassy-usb-logger	USB logging	Logging over USB via defmt
cyw43	Wi-Fi chip driver	Driver for CYW43 Wi-Fi chip
embedded-hal	HAL traits	Common embedded interfaces (SPI, I2C)
embedded-hal-async	Async HAL traits	Async SPI/I2C interfaces

Links

1. Hand gesture car