The Spectrum, Department R & D Cell organized a two-day hands-on workshop as part of student activities to enhance practical knowledge in embedded systems and IoT, under the guidance of Dr. Hema Kale, R & D Coordinator, E & TC. The workshop was conducted by Aryan Charole and Anuj Patthe for 4th semester students on 17 February and 24 February, from 11:15 AM to 1:15 PM.

The workshop aimed to provide hands-on experience with the ESP32 microcontroller, IoT platforms, sensor interfacing, PWM, and Bluetooth communication. It introduced students to ESP32 architecture, pin configuration, features, and differences between various models, along with the basics of ADC. Participants also gained practical exposure to PWM, Bluetooth communication, and PID control, while exploring IoT applications using Blynk and ThingSpeak. Sensor interfacing using the DHT11 temperature and humidity sensor was also demonstrated.

On the first day, the focus was on foundational concepts of ESP32 and IoT applications. Students learned about the ESP32 pin diagram, model differences, and ADC fundamentals for reading analog sensor data. Practical demonstrations included using Blynk to control devices via smartphones and ThingSpeak for cloud-based monitoring, helping students understand remote control and data visualization.

The second day covered advanced concepts and hands-on exercises, including PWM for controlling LED brightness and motor speed, and serial Bluetooth communication between ESP32 and smartphones. Students were introduced to PID control and its applications in automation. They also interfaced the DHT11 sensor to read temperature and humidity data and transmit it to IoT platforms, reinforcing their practical understanding.