Arduino App - Analyze and Predict Temperature & Humidity

This section details the design and implementation of an embedded IoT system using ESP32 and DHT11 sensor to acquire and process real-time environmental data, visualize it on an OLED display, and trigger LED indicators based on temperature thresholds.

The equipment before implementation

+) ESP32 Development Board

+) DHT11 Temperature and Humidity Sensor

+) OLED Display

+) LED Indicators

+) Resistors and Jumper Wires

Arduino Setup

Figure 1: Arduino setup with ESP32, DHT11 sensor, OLED display, and LED indicators.

Implementation: (download the code)

+) Built a real-time embedded system using ESP32 to monitor environmental data

+) Integrated sensor (DHT11), display (OLED), and actuator (LED) into one working system

+) Implemented hardware-software integration, including wiring, debugging, and testing

+) Used I2C communication protocol to interface with an OLED display

+) Developed control logic based on sensor input (threshold-based LED alerts)

+) Debugged issues using Serial Monitor and error handling (NaN checks)

+) Gained hands-on experience with microcontrollers, GPIO, and circuit prototyping

+) Wrote efficient Arduino C/C++ code for real-time data processing