Smart Safety IoT System

Ultrasonic distance sensor module

Distance sensing module used as one of the physical inputs in the safety prototype.

Arduino Uno controller board

Microcontroller board used for sensor-side control and firmware execution.

Gas and smoke sensor module

Gas and smoke detection module represented in the Smart Safety sensor set.

Sound sensor module

Sound detection module used as part of the monitored physical environment.

Layered system architecture

High-level view of the hardware, local communication, cloud, dashboard, and WhatsApp alert layers.

Smart home safety architecture

Architecture showing Arduino, ESP32, sensors, cloud services, dashboard, mobile access, and WhatsApp notifications.

Use case diagram

Interaction map for monitoring, alerts, remote control, and system administration.

Safety activity flow

Decision flow for safe, warning, and danger states across sensor readings and alert actions.

Data flow diagram

Data movement between sensors, microcontrollers, backend services, dashboard screens, and alert channels.

Safety state machine

State transitions for normal, warning, and danger monitoring behavior.

Dashboard overview

Main dashboard with live sensor values, device state, control actions, and recent events.

Live sensor telemetry

Dashboard telemetry view for temperature, gas, distance, light, sound, flame, and motion signals.

Device control panel

Remote actuator controls and safety state indicators from the monitoring dashboard.

Event log and alerts

Recent readings and event history used to inspect safety conditions over time.

Safety dashboard status

Dashboard state view for live monitoring and active safety conditions.

Monitoring timeline

Dashboard view for reading updates and recent safety events.

Alert detail view

Monitoring screen focused on active readings and alert history.

Dashboard final view

Final dashboard capture showing live status, control actions, and logs in one interface.

WhatsApp alert messages

Mobile alert thread showing automatic safety notifications and command responses.

WhatsApp control conversation

Command and alert conversation covering safe, warning, danger, and door control messages.

ESP32 main loop

Firmware control loop for network connection, sensor collection, cloud sync, and command handling.

Arduino firmware flowchart

Embedded firmware flow for reading sensors, evaluating conditions, and controlling outputs.

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