Real-time temperature and humidity monitoring system

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Table of contents

• About the Project
• System implementation episode 1：ESP32
• System implementation episode 2：Express
• System implementation episode 3：mongoose & MongoDB
• System implementation episode 4：Deploy to Railway platform

About the project

The real-time online platform integrating ESP32、Express routing and MongoDB allows you to easily monitor the temperature and humidity of the surrounding environment.

System implementation episode 1：ESP32

ESP32 is mainly responsible for：

• Connect to WiFi.

• Make a https post request：

  • Send the https request headers and request body
  • Set up railway server certificate

• Capture temperature and humidity information through DHT11 sensor.

• Process and send the temperature and humidity data in JSON format to MongoDB.

ESP32_ArduinoIDE_ExecutionScreenshot：

System implementation episode 2：Express

Express is mainly responsible for：

• Create web application routes.
• Create EJS webpage.
• Executing middlewares.
• Receive and process https post request.

EJS_WebPage：

System implementation episode 3：mongoose & MongoDB

mongoose & MongoDB are mainly responsible for：

• Create database schema and model.
• Connect to MongoDB server.
• Collaborate with Express for CRUD operations.

MongoDB_Compass_ExecutionScreenshot：

System implementation episode 4：Deploy to Railway platform

Railway_GitProjectDeploy：

Railway_MongoDBDeploy：