📶 Quectel EC200U-CN WebUI

Created by MisterNegative

Welcome! This repository provides a complete Web User Interface (WebUI) for the Quectel EC200U-CN LTE Cat 1 module. By using this setup, you can monitor network status, manage SMS, and control your module directly from a web browser, all powered by your Arduino board.

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📸 Demo Preview

(Upload your images to a folder named images in your repository to make these links work)

Figure 1: The main dashboard showing signal strength, network operator, and live connection status.

Figure 2: WebUI interface displaying live GPS coordinates and SMS management.

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🚀 Step 1: Download the Library & WebUI Assets

To get the required WebUI files and the Arduino library for your module, please navigate directly to the main library repository:

👉 https://github.com/MISTERNEGATIVE21/QuectelEC200U

There you will find the library release and all necessary files to interface your Quectel EC200U-CN with Arduino.

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🔌 Step 2: Arduino Hardware Setup

Connect your Arduino (e.g., ESP32, Arduino Mega) to the EC200U-CN module.

EC200U-CN Pin	Arduino Pin (ESP32 Example)	Description
TX	RX (Pin 16)	Transmits data to Arduino
RX	TX (Pin 17)	Receives data from Arduino
GND	GND	Common Ground
VBAT	External 3.8V-4.2V Power	Do NOT use Arduino 5V!

⚠️ Important: The EC200U-CN uses 1.8V logic. If you are using a 5V Arduino board (like the Uno), you must use a logic level shifter on the TX/RX lines to prevent damaging the module.

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📝 Step 3: Running the WebUI Example Code

Once you have downloaded and installed the QuectelEC200U library from the link above, you can use the pre-built example to get started instantly!

1. In the Arduino IDE, go to File -> Examples -> QuectelEC200U.
2. Select the Webui example sketch.
3. Check the pin definitions at the top of the sketch to ensure they match your hardware wiring.
4. Click Upload to flash the code to your Arduino board.
5. Open the Serial Monitor (set to 115200 baud) to watch the initialization process.

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🌐 Accessing the WebUI

1. Once the Arduino code says the modem is initialized and the WebUI is running, connect your PC or phone to the module's network (via USB RNDIS/ECM or Wi-Fi if bridging).
2. Open your web browser.
3. Navigate to the module's local IP address (usually http://192.168.1.1 or http://192.168.225.1).
4. You should now see the WebUI dashboard!

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🤝 Contributing & Support

If you find a bug or want to add a new feature to the WebUI or the QuectelEC200U library, feel free to open an Issue or submit a Pull Request!