Iot based project day 2 task on the esb32

Iot based project day 2 task on the esb32

1. Day 2 Task – Wokwi Simulation with Arduino & Sensors

2. Objective & Hardware on Wokwi
To familiarize students with Wokwi platform, ESP32 microcontroller, basic sensor
connections, and reading outputs on the serial monitor.


Arduino Uno Dev Module

DHT22 Sensor (Temperature &
Humidity)

Ultrasonic Sensor (HC-SR04)
(Distance)
LDR Sensor (Light intensity)

Gas Sensor (MQ-2) (Air
quality)

PIR Sensor (Motion detection)

3. Objective & Hardware on Wokwi
Step 1 - Setup the Wokwi Project
Open https://wokwi.com
Select “New Project → Arduino UNO”.
Add the following components from the
Wokwi Parts Library:
●DHT22
●HC-SR04
●LDR (photoresistor)
●MQ-2
●PIR Sensor
●16* 2 LCD Display with I2C Module

4. Objective & Hardware on Wokwi
Step 2 - Wiring Guide


Sensor VCC GND Signal Pin
DHT22 3.3V GND 2
HC-SR04 TRIG 5V GND 3
HC-SR04 ECHO 5V GND 4
LDR + Resistor 3.3V GND 5
MQ-2 5V GND AO
PIR 5V GND 6
LCD DISPLAY - SDA - A4 SCL - A5

5. Objective & Hardware on Wokwi
Step 3 - Example ESP32 Code Snippet

6. Serial Monitor Output Example
Step 4 - Serial Monitor Output Example


?????? Day 1 Deliverables:
✅ Create Wokwi simulation link and share it.
✅ Upload ESP32 code and verify live sensor readings.
✅ Take screenshot of the serial monitor output.
✅ Each student/team will:
●Show the instructor the live readings.
●Explain what each sensor measures.

7. THANK YOU
Click Here to get a Wokwi Project Link