Aim

To identify and fix problems in a faulty IoT setup.

Requirements

• A preloaded faulty IoT circuit or code (teacher sets up errors in advance)

• Arduino Uno

• ESP8266 Wi-Fi module (or Tinkercad simulation)

• LED / Fan motor

• IoT dashboard or Blynk app

• Internet connection

Steps

Step 1: Run the Faulty Setup

• Teacher provides a circuit or code with mistakes.

• Students try to run the IoT project (e.g., LED control from phone).

Step 2: Observe the Error

• Is the device not turning ON?

• Is the response too slow?

• Is the app not showing values?

• Write down the symptom of the problem.

Step 3: Check Connections

• Verify power supply: Is Arduino connected properly?

• Check wiring: Are the LED/fan wires loose? Is the resistor missing?

• Ensure pins in code match the hardware pins.

Step 4: Test Internet Link

• Check if Wi-Fi is connected.

• If using Blynk, check if Auth Token is correct.

• If using dashboard, confirm internet access.

Step 5: Fix the Errors

• Correct wiring issues.

• Update code with the right pin or network details.

• Restart Wi-Fi module if needed.

Step 6: Run the Setup Again

• Upload fixed code.

• Restart Arduino.

• Open app and check if device responds.

Step 7: Reflect

• Note what caused the issue.

• Discuss how such problems can be prevented in real-world IoT projects.