Arduino & ESP32 Projects Collection

A comprehensive collection of over 40 Arduino and ESP32 projects, ranging from basic LED blinking to complex robotics and sensor integrations. This repository serves as a learning resource and a portfolio of embedded systems applications.

🚀 Project Categories

🤖 Robotics & Automation

• Automatic Car Parking & Toll Gate: Managed system for vehicle entry and parking.
• Bluetooth Controlled Car: Smartphone-controlled vehicle using Arduino and HC-05.
• IR Remote Controlled Car: Vehicle navigation using standard IR remotes.
• Smart Dustbin: Motion-triggered automated trash can.
• Fingerprint Attendance System: Biometric attendance logging with RTC support.
• Line Follower/Forward Robot: Autonomous navigation using IR sensors.

🌡️ Sensors & Measurement

• Environment Monitoring: BMP280 for temperature, pressure, and altitude.
• Health Tech: Blood Oxygen and Heart Rate measurement with MAX30100.
• Gas Detection: Gas leakage monitoring using MQ-2 and MQ-5 sensors (Arduino/ESP32).
• Motion Tracking: 6-axis accelerometer and gravity sensing with BMI160.
• Digital Compass: Heading and magnetic field detection using HMC5883L.
• Water Level Management: IoT-based water level monitoring for ESP32 and ESP8266.
• Security: PIR motion detection with audible buzzer alarms.

📺 Displays & Graphics

• OLED & TFT Graphics: Advanced graphics benchmarks and demos using U8g2 and Adafruit libraries.
• LCD Interfaces: I2C-based 16x2 and 20x4 character displays.
• Legacy Displays: Interfacing with Nokia 5110 (PCD8544) monochrome screens.
• Matrix Displays: LED dot matrix control and animations.

⚙️ Basic Components & IO

• Input Handling: Matrix keypads, pushbuttons, and IR receivers.
• Actuators: Precision control of Servo and DC Gear motors.
• Visuals & Audio: Traffic light simulations, multiple LED patterns, and a mini buzzer piano.
• Timekeeping: Real-time clock (RTC) implementations for scheduled tasks.

🛠️ Hardware Stack

• Microcontrollers: Arduino Uno, ESP32 DevKit, NodeMCU (ESP8266).
• Communication: I2C, SPI, UART, Bluetooth, Infrared.
• Key Components: SSD1306 OLED, HC-SR04 Ultrasonic, MAX30100, BMP280, L298N Motor Driver, DS1302 RTC.

💻 Getting Started

Prerequisites

1. Install Arduino IDE.
2. Install necessary board cores (ESP32 by Espressif, ESP8266 by ESP8266 Community).
3. Install required libraries via the Arduino Library Manager:
   • Adafruit_BMP280
   • U8g2
   • LiquidCrystal_I2C
   • Adafruit_Fingerprint
   • MAX30100_PulseOximeter

Installation

1. Clone the repository:

   git clone https://github.com/[username]/[repo-name].git

2. Navigate to the specific project folder.
3. Open the .ino sketch in Arduino IDE.
4. Select your board and COM port.
5. Compile and Upload.

📝 License

This project is for educational purposes. Feel free to use and adapt the code for your own projects.