Usage Example for Raspberry Pi - Using 4G Module as Network Card

Hardware Preparation

• TEL0177 Air780EU module ×1 x 1
• DFR0619 Raspberry Pi 4 B ×1 x 1
• DFR0550-V2 5”800×480 Raspberry Pi DSI Fully Fitted Touch Screen ×1 x 1
• Keyboard x 1

Operation Steps

1. Connect the 5-inch touch screen to the Raspberry Pi with the FPC cable

2. Ensure that the SMT PCB nut of the touch screen contacts the ground

3. Next, insert the SIM card into the Air780EU module, and connect the Air780EU module and keyboard to the Raspberry Pi via USB

4. Then, power on the Raspberry Pi and wait for the screen to display

5. Open the Raspberry Pi terminal and use the "lsusb" command to check whether the module's vid and pid are correct

   lsusb
   

   When the module is correctly connected to the Raspberry Pi, the displayed vid and pid are 19d1 and 0001 respectively

6. Use the "ifconfig" command to view network interface information, including enabled network cards and their corresponding IP addresses

   ifconfig
   

7. If the eth0 network card appears, disable it and enable the eth1 network card

   sudo ifconfig eth0 down  
   sudo ifconfig eth1 up
   

8. Use the "ifconfig" command again to confirm that the eth1 network card is enabled and has the correct IP address

   ifconfig
   

Wait a moment, the network connection will be successful, and you can surf the Internet normally afterwards