Real-Time Environmental Data Logger and Plotter

The Real-Time Environmental Data Logger and Plotter functions by combining hardware-based environmental sensing with software-based data visualization. At the heart of the hardware circuit is the Arduino Nano, which acts as the central processing unit. Connected to the Arduino Nano is a DHT sensor, responsible for physically measuring the surrounding temperature and relative humidity levels in real-time. The Arduino Nano reads these raw sensor signals through its input pins and processes the data. To bridge the hardware with a computer, a USB C adaptor is used to establish a reliable physical link between the microcontroller and a workstation running Python. Through this serial connection, the Arduino continuously streams the gathered temperature and humidity metrics. On the software side, the Arduino IDE is first used to program the microcontroller to handle sensor polling and serial communication. Once running, a Python script on the computer reads the incoming data stream over the USB port. Python's plotting and data-handling libraries then take these incoming numbers and instantly render them into live, dynamic visual charts. This creates a closed-loop system where physical environmental changes are captured by the DHT sensor, digitized by the Arduino Nano, transmitted via the USB C adaptor, and finally displayed graphically on a computer screen for analysis.