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Various networking experiments

Build your own linux based broadband4g/wifi/mifi router

something like this

https://tweakers.net/pricewatch/430455/tp-link-4g-mi-fi-hotspot-met-display-m7350-v1-v2-of-v3.html

Components:

Software

Optional extra Software

Proof Of Concept 1 : orangepizero

for mobile vikings:

telnr *99# apn web.be (via AT init strings) user/pass web

Poc2 : raspberry pi 4

Need a proper 4g dongle

There are some complaints about this variety. No direct access to the cellullar modem.

=> https://unix.stackexchange.com/questions/213663/huawei-e3372s-linux-rasbian-incoming-connections-problem

" De E3372h-153 werkt onder linux. De E3372s is een ander product met andere software. E3372 wordt vaak zonder aanduiding h of s aangeboden, dus pas op. Nog geen uitgebreide ervaring met snelheid en dekking. Openwrt heeft nodig kernel module usb-net-cdcether en de usb-modeswitch software. OpenSUSE herkent hem direct."

Huawei E3372s (unlike most of the older sticks which use dialing like wvdial) uses CDC_ETH driver system which creates an ethernet-like device to the system (ETH1 in this case) and should work in this case flawlessly.

cheap, uses usb_gadget instead of usbmodem, usbeter. It runs linux internally, and also uses/exposes ADB with "some work". Costs around 30$. Available as "solder" type, miniPCIe and usb (with miniPCIe adapter)

DON'T build you own mifi router: use a "wingle"

A "Wingle" is like a mifi router, but requires power via usb and has no configuration screen. These are standalone wifi access points and have a builtin 4g modem (and this sim slot) to connect to the internet. They to be powered via usb since they do not have their own battery and also do not have configuration screen. So you plug them into a usbcharger or powerbank, and basically they become pretty much the same thing as a mifi router. When plugged into a usb dataport there is a way to access their "user interface" over usb and configure them, but that seems to require windows. Some of these can also act as a plain 3/4g dongle when plugged into a pc usb port.

Huawei 8372: wifi + 4g, "150mbit" on wifi. Expensive (~ 70 eur, price of a mifi router with battery) but mostly positive reviews.