Keywords: Raspberry Pi Raspberry Pi 3B 4B OpenWrt 4G LTE WiFi hotspot SSID 4G router Mifi Mi-Fi wireless telecommunications Unicom mobile cellular data sharing Huawei ME909s shift away EC20
Overview: Raspberry Pi is a biologically rich hardware and software platform, based on the hardware platform can build a lot of creative applications. Today we want to introduce the Raspberry Pi OpenWrt system equipped with an external USB 4G LTE module, sharing both wired and wireless networks. I.e. OpenWrt programming module and connected to the 4G LTE Raspberry Pi becomes a powerful and highly configurable software router, it can 4G cellular data traffic to share network PC, mobile phone network through the wired or wireless hotspots devices connect to the Internet use.
Currently proven platform:
Raspberry Pi 3B platform: to share 4G traffic over wired and wireless networks to other devices;
Raspberry Pi 4B platform: currently only can share 4G traffic to other devices via a wired network, wireless hotspot is still part researching
From the Status page you can see the software and hardware version information, device resource utilization, the content currently connected device information, SSID information
The interface can see various items of information LAN, WAN, WWAN is.
LAN refers raspberry RJ45 network to send, the port used to access the network devices such as a PC with a cable network interface;
the WAN Interface Raspberry Pi refers to a network device connected through the USB port of the network switch, such as on a router;
WW is sent by means raspberry 4G USB interface module, the entire system may be connected through the Internet module 4G, and by hot (raspberry Pi board using WiFi) and cellular data shared LAN.
Wireless profiles page you can see the SSID information Raspberry Pi share information and connect up equipment
Hardware tower structure:
18650 lithium double bottom power management system, via MicroUSB / USB-C / USB-A charge in three ways, while the same output port may provide external 5V2A power supply capability (i.e., input as well as output) mode; Further boosting circuit board separate 15W, available 5.1V3A output to meet the power needs of raspberry send 4B. Power supply by the power supply probes (such cable can be removed), may be transferred via the power supply wiring to the peripheral port USB-A.
Raspberry Pi is intermediate 3B, the current supply through the bottom of the probe.
4G is an upper module, or alternatively ME909s EC20, 4G support three networks.
It may implement a radio + wired through the tower system after programming and configuring the OpenWrt 4G cellular data sharing, i.e. 4G router, or called MiFi
