This project is an IoT-based smart safety system for shopping malls.
It uses Arduino and various sensors to monitor and ensure safety in different mall areas.
The system detects temperature, gas leaks, motion, lift overload, and light conditions to enhance security.
Developed using Tinkercad simulation, this project was primarily designed during the pandemic
to automate safety checks at the mall entrance, lift, emergency situations, and lighting systems.
🔗 View the Tinkercad Simulation
| Name | Quantity | Component |
|---|---|---|
| U1 | 1 | Arduino Uno R3 |
| U2 | 1 | Temperature Sensor (TMP36) |
| GAS1 | 1 | Gas Sensor |
| D1 | 1 | Blue LED |
| PIEZO1 | 1 | Piezo Buzzer |
| R1, R2, R5, R6, R7, R10 | 6 | 1 kΩ Resistors |
| PIR1 | 1 | PIR Motion Sensor |
| D2 | 1 | Green LED |
| R3 | 1 | 220 kΩ Resistor |
| R4 | 1 | Force Sensor |
| D3 | 1 | Red LED |
| T2 | 1 | NPN Transistor (BJT) |
| L1 | 1 | Light Bulb |
| P3 | 1 | 4.7V, 25V Power Supply |
| R9 | 1 | Photoresistor (LDR) |
- 📍 Placement: At the mall entrance.
- 📊 Function: Measures temperature and ensures safety during pandemic times.
- 🔔 Action: If temperature exceeds 70°C, an LED alert is triggered.
- 📍 Placement: Inside the mall premises.
- 📊 Function: Detects gas leaks or smoke.
- 🔔 Action: If harmful gases are detected, a buzzer alarm goes on.
- 📍 Placement: Outside the mall.
- 📊 Function: Detects sunlight intensity.
- 💡 Action:
- If sunlight is dim, the mall lights turn ON.
- If sunlight is bright, the lights turn OFF.
- 📍 Placement: Inside the mall lift (elevator).
- 📊 Function: Detects lift overload.
- 🔔 Action: If the force exceeds a certain limit, a warning is displayed.
- 📍 Placement: Near the mall doors.
- 📊 Function: Detects human motion.
- 🚪 Action: If motion is detected, mall doors automatically open.
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Open the Tinkercad Simulation
- Click on the Tinkercad link provided above.
- Sign in to copy and edit the project.
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Access the Code
- Open the "Code" section in Tinkercad.
- Copy the code from the
code.txtfile (available in this repository). - Paste it into the Tinkercad text-based code editor.
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Start the Simulation
- Click the "Start Simulation" button in Tinkercad.
- The circuit will run, and the sensors will respond based on the logic in the code.
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Test the System
- Simulate different conditions in Tinkercad by adjusting sensor values.
- Observe how the LEDs, buzzer, and automatic door respond.
The full Arduino simulation code for this project is available in the code.ino file.
You can copy it and run it directly in Tinkercad's code editor.
Below is the Tinkercad circuit setup for this project:
