Visitor Monitoring System (Arduino Uno & Wemos)

This project is a visitor monitoring system that consists of two devices: Arduino Uno and Wemos (ESP8266). The Arduino Uno is responsible for collecting sensor data and sending it to the Wemos, which then sends the data to the API server.

Features

• Arduino Uno collects data on temperature, humidity, and the number of visitors.
• Wemos (ESP8266) receives data from Arduino, formats the data, and sends it to the API server in JSON format.

---

Requirements

• Arduino Uno
• Wemos (ESP8266)
• DHT11 or DHT22 Module (for temperature and humidity)
• RFID Module or Motion Sensor (for detecting the number of visitors, optional)
• WiFi connected to the internet

---

How to Use

1. Set Up WiFi Connection

Before uploading the code to the Wemos, you need to change the SSID and WiFi password to match your local network.

• Open the WemosCode.ino file in the Arduino IDE.

• Locate the following section in the code:

  const char* ssid = "ZTE_2.4G_36kdi9";  // Replace with your WiFi SSID
  const char* password = "12345678";     // Replace with your WiFi password

• Replace ssid and password with your WiFi credentials.

2. Change the API Server URL

In the Wemos code, there is a URL for the API server used to send the data. You need to adjust this to the API you are using. Here is the part that needs to be changed:

const String serverName = "http://192.168.1.6:3000/api/post-visitors";  // Replace with your API URL