Raspberry Pi Zero Dedicated 4G HUB Expansion Board Air780e N

Date:2024-11-05 Views:

a) About

The Air780E networking module on the Air780e expansion board of the LC Raspberry Pi Zero_4G HUB is an LTE Cat.1 bis communication module launched by Luat Communication. It has 4G full network and can be used by inserting a card, which can adapt to different operators and products. It defaults to AT firmware and comes with an onboard SL2.2S-USB conversion chip. The Raspberry Pi Zero is connected to the USB signal line of the module through a top pin, realizing USB one to three Type_C port expansion. It is plug and play, with commonly used pins for easy secondary development.

b) View

①Front view

②Side view

③Reverse image

c) Functional Features

1. Onboard Air780E module, 4G full network, can adapt to different operators and products;
2. AIR780E module, low power consumption, sleep power consumption as low as 600uA;
3. Flip up nano SIM card holder, easy to install and remove;
4. Onboard blue AIR780E network status indicator light;
5. Connect the Raspberry Pi Zero to the USB signal cable of the module through a top pin;
6. USB extension with three Type_C ports;
7. Onboard 4G antenna to enhance network signal;

d) Introduction and Explanation

Board size：30*65mm/15 g

Interface Introduction

1. Type_C power supply port
2.4G antenna
3. Type_C data interface: external USB device, drive free and ready to use
4.5mm High Copper Pillar: Stacked with Raspberry Pi Zero via Copper Pillar and Screw
5. Blue network status indicator light
6. Nano SIM card holder: plug in and use immediately
7. Top pin: Connect USB data cable 5V ->GND ->D+->D-
8. USB conversion chip: SL2.2S
9. Air780E module

e) Instructions for use

1. Insert any carrier's SIM card into the expansion module, then stack the module with the Raspberry Pi Zero development board, install the copper pillar and tighten the screws to ensure that the top pin of the module is placed on the four USB test points on the back of the Raspberry Pi, as shown in the figure:

2. Power on the Raspberry Pi Zero development board（It is recommended to use the power supply port that comes with the Raspberry Pi. If you use the power supply port of the expansion module, the power supply pin may shift slightly when the development board is bumped, causing the development board to power down and restart），Wait for the startup to complete, plug in an external USB device such as a mouse, keyboard, USB drive, etc. The Raspberry Pi will automatically recognize the device, as shown in the following figure:

3. Network function testing

After inserting an available SIM card, the system will automatically recognize the 4G module as eth0. Open the system terminal and enter "ifconfig - a" to query the current network configuration. The eth0 column in the figure represents the network configuration of the SIM card:

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