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Point-to-Point Configuration

Point to point configuration is simple and convenient, making it suitable for communication between small, low power, and low cost devices. Point to point communication is also…

4 min read · English documentation

Point-to-Point Configuration Quick Start

Point-to-Point Configuration Quick Start Guide for Beginners.

Tip

Before studying this chapter, make sure you have read the "Unboxing Guide" and "Interface Description" chapters and completed the basic assembly of and familiarization with the LQ.
Point-to-point configuration, also known as one-to-one configuration, refers to a method in which one device (called the primary device and usually configured as an AP) connects to another device (called the secondary device and usually configured as a STA) to enable communication between them. It is similar to a telephone call: the primary device initiates the call, while the STA device receives it.

Point-to-point configuration is simple and convenient, making it suitable for communication between small, low-power, and low-cost devices. Point-to-point communication is also one of the most commonly used communication methods for UAVs.

Caution

This chapter covers only the basic point-to-point network configuration and quick setup methods. For advanced configuration methods such as transparent serial transmission and SBUS, refer to the <<Detailed Configuration Guide>> chapter for further study.

Preparation Before Configuration

  • LQ3 Data Link Station Unit Preparation
  • Connect the Ethernet cable supplied with the LQ3 Data Link Station Unit to the Ethernet port on the Station Unit and to the laptop, respectively.
  • Briefly press the power button. After you hear a beep, press and hold the button until the operating indicator flashes, indicating that the device has entered operating mode.

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  • LQ3 Data Link Mobile Unit Preparation
  • Connect the Ethernet cable supplied with the LQ3 Data Link Mobile Unit to the Ethernet port on the Mobile Unit and to the laptop, respectively.
  • Connect the power cable supplied with the LQ3 Data Link Mobile Unit to the charging port, and set the supply voltage to 12V~18V.

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Configuring Point-to-Point Communication

  1. First, prepare two LQ devices and designate them as the LQ primary device (AP unit) and the LQ secondary device (STA unit), respectively.

  2. Connect the LQ primary device to a power supply or turn it on. Do not exceed the voltage range; otherwise, the device will be damaged.

  3. Connect the LQ Ethernet cable to your computer. Before proceeding, make sure you know how to configure a static IP address in Windows. Refer to the following link for instructions: https://zhuanlan.zhihu.com/p/607778502.

  4. Set the computer's IP address to 192.168.1.123, the subnet mask to 255.255.255.0, and the gateway to 192.168.1.1.

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  1. Open a browser on the computer, enter 192.168.1.200 in the address bar, and press Enter to access the LQ management page. If the interface shown below appears, access was successful. If you cannot access the page, go to <<Firmware Upgrade and Recovery>>, restore the factory settings using the hardware procedure, and then try to access the page again.

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  1. Click "Network Settings" in the navigation bar on the left to open the Network Settings page.

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  1. Keep the settings in the red box below consistent with those shown in the figure, click "Save," and then click "Restart." Note: Change the ESSID and password as needed, but make sure that the ESSID and password are identical on all devices participating in the network.

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  1. Connect the LQ secondary device to the computer using the method described above. Access the web management page, and click "Network Settings" in the navigation bar on the left to open the Network Settings page.

  2. Keep the settings in the red box below consistent with those shown in the figure, click "Save," and then click "Restart."

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  1. Wait for the two devices to connect successfully. They can then communicate with each other.

How to Determine Whether the Point-to-Point Devices Are Connected Successfully:

  1. Physical check: The LQ unit has a built-in signal indicator. When the indicator remains steadily lit, the device is connected successfully. When the indicator flashes, the device has no connection.

  2. Web page check:

  • Access the primary device through the Ethernet port (IP:192.168.1.200): Click "Online Information" in the navigation bar on the left to open the Network Settings page. Under "IP Address," check that the IP addresses of both the primary and secondary devices are present: 192.168.1.200 and 192.168.1.201, respectively. The status information for both devices should show that they are online.

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  • With the Ethernet cable connected to the primary device (AP device): Verify that you can access the secondary device's web page (that is, 192.168.1.201).

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  1. ping command check:

Use the ping command on the computer to test the IP addresses of the primary and secondary devices. If both IP addresses respond to ping, the two devices are connected successfully. If you are unfamiliar with using the ping command in Windows, refer to the following link for instructions: https://zhidao.baidu.com/question/2151799451139903588.html

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