OLED Display Not Working: Verify the I2C connections (SCL and SDA). Check the OLED address in the code. DHT11 Sensor Issues: Ensure the DATA pin is connected to the correct Arduino pin. Check for a ...

📌 Working Principle 1️⃣ Soil Moisture Sensor detects the amount of water in the soil and provides an analog value. 2️⃣ DHT11 Sensor measures temperature and humidity and sends data to Arduino Uno.