Introduction

Web server using a Raspberry Pi and DHT22 sensor to graph the humidity and temperature in my apartment over time. The data can be accessed over a web browser.

Skills I learned during this project: -Setup the minimal Raspbian operating system to the RPi, called Minibian -Install and use Python, and the Python virtual environment -Install and use Flask, a Python-based web micro-framework -Install and use uWSGI as the application server for Flask -Install and use Nginx light-weight web server -Use Skeleton to make the web UI look better -Use the RPi GPIOs as digital input and outputs -Use a DHT22 humidity and temperature sensor -Install and use the SQLite database to store sensor data -Add a cron job to store sensor data every so many minutes -Use the Google Chart API to create visual representations of the sensor data -Use Javascript/JQuery to add interactivity to web pages -Use Plotly for graphical analysis of sensor data

YouTube

YouTube:

Circuit Diagram