Welcome to Hobitronics' Intermediate Arduino Project Series – a hands-on journey through real-world electronics systems. This repository contains five industry-relevant Arduino projects designed to elevate your prototyping and hardware-interfacing skills. Each project includes code, circuit diagrams, simulations, and practical applications.
| No. | Project Title | Description |
|---|---|---|
| 1. | 16x2 LCD Display Interfacing | Display messages using a standard 16x2 LCD. |
| 2. | Temperature & Humidity Live Display | Monitor environment using a DHT22 sensor. |
| 3. | Soil Moisture Sensor with Water Pump | Smart irrigation using analog soil moisture data. |
| 4. | Gas Sensor with LCD Display | Detect and display CO/CH₄ gas levels in real time. |
| 5. | RFID Delivery Tracking System | Track parcels and simulate real-world logistics. |
Skills: LCD interfacing, contrast control with potentiometer, cursor positioning.
Components:
- Arduino UNO
- 16x2 LCD (non-I2C)
- 10kΩ Potentiometer
- Jumper Wires + Breadboard
Applications:
- Smart meters
- Digital clocks
- Home automation panels
Skills: Sensor interfacing, real-time data handling, display formatting.
Components:
- DHT22 sensor
- 16x2 LCD
- Arduino UNO
Applications:
- Smart HVAC systems
- Greenhouse monitoring
- Educational weather stations
Skills: Sensor data processing, transistor/optocoupler control, automation logic.
Components:
- Soil Moisture Sensor
- 9V Pump + NPN Transistor
- Optocoupler for isolation
- 16x2 LCD, Arduino UNO
Applications:
- Smart farming
- Urban gardens
- Remote irrigation systems
Skills: Analog-to-digital mapping, real-time gas monitoring, LCD visualization.
Components:
- MQ-2/MQ-135 Gas Sensor
- Arduino UNO + LCD
- Potentiometer (contrast)
Applications:
- Gas leak detection
- Air quality systems
- Industrial safety tools
Skills: RFID reading, UID validation, simulation vs. real hardware switching.
Components:
- RC522 RFID Reader
- RFID Tags
- Arduino UNO
- Optional: LCD, Buzzer, LEDs
Applications:
- Logistics & inventory tracking
- Library management
- Access control systems
- Real-time data visualization
- Sensor calibration and mapping
- Safety isolation techniques (transistors, optocouplers)
- Simulation-first development (Tinkercad/Wokwi)
- RFID tracking systems and SPI interfacing
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