Smart Fruit Spoilage Detector using ESP8266 & Sensors

🥭 Fruit Spoilage Detection Using ESP8266🔍 Problem:Fruits spoil quickly if they are stored in hot, humid, or contaminated environments. This leads to food waste, health risks, and economic loss.💡 Solution:I created a smart fruit spoilage detection system using NodeMCU ESP8266 that continuously monitors:Air Quality using MQ135 (detects ethylene gas released by spoiling fruit)Temperature & Humidity using DHT22Distance using HC-SR04 (checks how close the fruit is to sensor)OLED Display shows live status of environment and fruit freshnessAll readings are processed on the ESP8266 board and displayed live. Optional Bluetooth can be used to send alerts.---⚙️ Hardware Used:ESP8266 NodeMCUMQ135 Gas SensorDHT22 Temperature & Humidity SensorHC-SR04 Ultrasonic Sensor0.96” OLED Display (I2C)10k ResistorBreadboard and Jumper Wires---🧠 How It Works:1. MQ135 detects gases (like ethylene) — signal increases if fruit is spoiling.2. DHT22 reads temperature & humidity — high levels can speed up spoilage.3. HC-SR04 checks distance — useful in storage boxes to detect position.4. OLED displays: Temp, Hum, Gas level, Distance, and Spoilage Status.---🔧 Future Upgrades:Add Bluetooth or Wi-Fi based alertsAdd AI-based image recognition to detect visual spoilagePortable battery-powered version for fruit vendors---💬 Conclusion:This project can help reduce food waste, improve fruit storage, and support farmers, vendors, and consumers. It’s low-cost, easy to build, and scalable.