IoT capstones are evaluated on seamless hardware-to-cloud integration. These 18 topics cover smart cities, healthcare monitoring, precision agriculture, and home automation using industry-standard microcontrollers and sensors.
Automated waste management bin featuring an HC-SR04 ultrasonic sensor to calculate garbage fill levels. Connects via ESP8266 to transmit real-time bin status to a municipal web dashboard and triggers collection alerts.
Compact environmental data logger utilizing a DHT11/DHT22 sensor wired to an ESP8266 Wi-Fi microcontroller. Posts periodic telemetry to an online cloud dashboard (Adafruit IO / ThingSpeak) with threshold alarms.
Keyless physical security system combining an RC522 RFID reader with a solenoid door strike. Authorized card swipes unlock the door and record visitor timestamps to Firebase, with emergency remote unlock via app.
Micro-meteorological monitoring station measuring barometric pressure (BMP180), ambient temperature, rainfall detection, and ambient light. Streams live data to a web portal with weather forecast summaries.
Wi-Fi enabled smart home circuit utilizing NodeMCU and an optocoupler-isolated 4-channel relay board. Allows remote switching of 220V household appliances from anywhere in the world via Blynk or custom app.
Foundational IoT embedded prototype establishing lightweight socket and HTTP REST API communication between an ESP8266 module and an Android client, featuring real-time state feedback and GPIO pin control.
Industrial and domestic safety node combining optical flame sensors, MQ-2 smoke detectors, and buzzer alarms. When fire thresholds are exceeded, the system triggers local sirens and sends emergency alerts via SMS/Email.
Smart agricultural monitoring device measuring volumetric soil water content via capacitive sensors alongside air temperature and humidity, alerting farmers via push notifications before plants experience water stress.
Digital electrical power meter measuring instantaneous current (ACS712) and mains voltage to compute real-time kilowatt-hour consumption. Calculates live electricity bills and detects meter tampering automatically.
Potable water surveillance station monitoring water pH levels, cloudiness (turbidity), and Total Dissolved Solids (TDS). Streams real-time purity scores to municipal dashboards to prevent contaminated drinking water supply.
Automated multi-slot parking management system using infrared obstacle sensor pairs to track slot occupancy. Displays available spaces on an entrance LCD display and pushes live availability to a mobile booking app.
Closed-loop automated agricultural irrigation controller that drives 12V submersible water pumps via relays only when soil dryness and ambient heat cross defined thresholds, reducing water waste by up to 40%.
Contactless student and employee attendance logging terminal. Reads 13.56MHz RFID cards, displays student names on an OLED screen, and writes arrival timestamps directly to Google Firebase in real-time.
Hazardous gas monitoring system utilizing MQ-5 / MQ-6 semiconductor sensors to detect LPG, butane, or methane leaks. Automatically activates exhaust ventilation fans, closes gas valves, and sends emergency alerts.
Municipal energy conservation network combining Light Dependent Resistors (LDR) with PIR motion sensors. Automatically keeps street lights dim at night and ramps to 100% brightness only upon vehicle approach.
Urban air quality index station monitoring carbon dioxide, smoke, alcohol, and harmful airborne gases via MQ135 sensor. Visualizes historical pollution trends on a responsive cloud web dashboard.
Remote patient monitoring system utilizing a MAX30100/MAX30102 pulse oximeter and DS18B20 digital thermometer. Streams real-time heart rate and blood oxygen levels to an ICU dashboard with emergency alert triggers.
Motorcycle rider safety helmet equipped with an MQ-3 alcohol breathalyzer and an ADXL345 accelerometer for crash detection. Disables vehicle ignition if alcohol is detected and transmits GPS coordinates via GSM during accidents.