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Description

Welcome back to Dev Odyssey Home Networking! In this episode, we learn how to create a 4G LTE Raspberry Pi Router, powered by OpenWrt 21.02 and using Verizon's network. This video is a sequel to connecting to a cellular network over with Raspberry Pi, OpenWrt and 3G. The use cases are similar, however with faster 4G LTE speeds, this Pi can can simply do more, where faster networking is required. Cellular configuration can be finicky and greatly vary between different modem manufacturers, however if you follow the general process below, you can successfully set up your own 4G LTE Raspberry Pi OpenWrt Router!

General Process for 
Decide On Your Cellular Carrier
Research Carrier Documentation
Research Modem Pricing
Ensure Region Support
Check Modem IMEI With Carrier (if you already own a modem)
Use Latest Firmware

Links

Hardware
* Refer to 3G Cellular OpenWrt RPi Router for base hardware
https://youtu.be/wodWA4AHVEw

Sierra Wireless MC7455 AirPrime
https://www.sierrawireless.com/iot-solutions/products/mc7455/

Bingfu 4G LTE 7 dBi Antennas
https://www.amazon.com/dp/B07K74FNNK

IPEX U.FL to SMA Female Pigtails
https://www.amazon.com/gp/product/B01HXU1PKS

Verizon Nano SIM Card

Verizon Approved Modules
https://opendevelopment.verizonwireless.com/design-and-build/approved-modules

Verizon IMEI Check
https://www.verizon.com/od/prepaid/bring-your-own-device

Software

OpenWrt WWAN Config Wiki
https://openwrt.org/docs/guide-user/network/wan/wwan/start

OpenWrt 4G LTE Wiki
https://openwrt.org/docs/guide-user/network/wan/wwan/ltedongle

AT Commands Sierra Wireless MC7455 AirPrime 
https://source.sierrawireless.com/resources/airprime/minicard/74xx/4117727-airprime-em74xx-mc74xx-at-command-reference/

OpenWrt Image Build Config
https://gist.github.com/odevodyssey/440de5d335368e619f93913b68f65c42

OpenWrt Cellular Network Config
https://gist.github.com/odevodyssey/b8a661286203ebe707da3b945e2a25c4

OpenWrt Custom Cellular Image
https://github.com/odevodyssey/openwrt-cellular-image

OpenWrt Packages Used
usb-modeswitch
kmod-mii
kmod-usb-net
kmod-usb-wdm
kmod-usb-net-qmi-wwan
uqmi
kmod-usb-net-cdc-mbim
umbim
kmod-usb-serial-option
kmod-usb-serial
kmod-usb-serial-wwan
luci-proto-qmi
kmod-usb-serial-qualcomm
kmod-usb-serial-sierrawireless
minicom

00:00 Intro
00:33 Foreword
01:10 Research and Preparation
02:39 Cellular Data Protocols
03:07 Hardware Requirements
03:52 Software Requirements
04:15 Hardware Assembly
05:41 Software Config
07:14 AT Commands
09:56 WWAN Interface Config
11:27 WWAN Testing
13:41 Improvements
14:16 Outro

Attributions

Track:Limujii - Beach
Watch: https://youtu.be/VTzog9ULMJs
Free Download: https://hypeddit.com/x4g8e1

Icons made by Freepik, Srip, DinosoftLabs from Flaticon
https://www.flaticon.com

Raspberry Pi trademark of Raspberry Pi Trading
OpenWrt is a registered trademark owned by Software Freedom Conservancy (SFC)

#RaspberryPi #Cellular #Router #OpenWrt