Questions tagged [modem]

For questions regarding interfacing to and using a modem with a Raspberry Pi.

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Setting up Raspberry Pi as 4G to LAN subnet router

I am trying to set up a Raspberry Pi 3b+ running Pi OS Lite with a Waveshare 4G hat (7600X) as a remote connection to a LAN network within a control panel. This is so in case the IIOT router (Ewon ...
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Does the RPi Zero suffer performance issues with cellular modems?

Sixfab's Raspberry Pi 4G/LTE Cellular Modem Kit claims that it works with every 40-pin Pi: Fully compatible with Raspberry Pi models that have the 40-pin GPIO header (4, 3, 2, A+). Raspberry Pi Zero ...
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2 answers
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Power issue: USB 4G Modem via USB Hub

I am hoping to get some advice, below is the hardware I am using, Raspberry Pi Zero 1.7W (Raspbian OS Lite - 2022 Kernel) Ethernet / USB HUB HAT (B) Hologram Nova 4G Modem Initial power tests, I see ...
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241 views

How to install LTE USB Huawei EE3372 on Raspberry pi zero?

HELP ! I never worked on Rasperry before, only arduino. Been trying for some time now to install LTE USB modem, Huawei EE3372 on a Raspberry pi zero. Found several instructions on the internet, some ...
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1 answer
87 views

AT- serial port communication with USB modem breaks ([Errno 32] Broken pipe) after upgrading to Stretch or Buster

Good day, I hope you guys are good. My name is Francis From Nigeria. I have been using raspberry for a while. I had to upgrade from Jessie to Stretch because my favorite raspberry pi 3B model is ...
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Trying to connect my RaspberryPi4 to a Bluetooth modem and have it trusted and paired, but get error can't connect RFCOMM socket

I have a RaspberryPi 4 and am trying to connect it to a Bluetooth modem. I have paired and trusted the modem, but when I try to connect to the modem I get the message that the connection failed (from ...
1 vote
1 answer
123 views

LTE-HAT GPIO SIM7600

I´m able to connect to the internet via the SIM7600 4G HAT modem when it´s connected to USB. Now I´d like to achieve the same without USB but only with the GPIO connection. Somehow the manual (https://...
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1 vote
1 answer
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RPi4 is not detected by the modem after a certain time (ethernet connection)

I try to use a RPi4 B as a server (to setup netxcloud, PiHole, etc). To do this I connect it to the modem via ethernet connection as showed in this picture : At first it works, the RPi is detected as ...
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Why does usb enumeration create a bogus device in /dev and how do I get rid of it?

I have a USB modem that sometimes enumerates wrong and creates a false device in /dev. How do I remove that bogus device ? How do I force renumeration without rebooting ? When the modem works ...
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SIM not detected ! Raspberry Pi connected via a 4g huawei e3370 USB modem using a SIM card

[Updated] I have a 4g huawei e3370 with a rpi 3. I am trying to configure my modeme e3370 but I am getting an error: SIM not inserted. Do you have any idea? Here is my /etc/wvdial.conf : [Dialer ...
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1 answer
262 views

Connect with tmux instead of screen

New questioner here! I am able to connect to my device using the following command: screen /dev/tty.usbmodem* 115200 My device is connected to my Mac with a microUSB -> USB cable. Is there a way ...
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1 vote
1 answer
358 views

SIM7600 LTE Modem via GPIO

I am building a drone that should connect to LTE internet with waveshares SIM7600 HAT. Every guide I see online for using the HAT as a LTE modem is using a USB connection between the PI and the HAT. ...
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1 answer
816 views

Read binary data from serial port and save in file

I am link modem to pi3 via serial port and configure this port . When i receive data in my python software from serial port and save bytes in file, i note i receive too mutch data , I am receiving ...
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38 views

Write and receive image to embedded modem via Txd and Rxd in Raspberry Pi 3

How can I send and receive image (page) to embedded modem via Txd and Rxd in raspberry pi3 using Python? And how can configure baudrate and flow control using Cts and Rts?
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201 views

Raspberry Pi 4 network speed drop

I configured my Raspberry Pi 4 to be a wireless and wired router that I can also use in combination with a D-Link DWM-222 USB modem. The problem is that when I connect the Ethernet cable (I am using a ...
1 vote
0 answers
37 views

setup pi3 to work with embedded modem through TXD RXD

how can I configure pi3 (GPIO ) connected to embedded modem through (UART Pin 8-Pin 10)TXD RXD? and how can write python code to control with modem?
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0 answers
692 views

Connect LTE modem to RPi with systemd-networkd networking

I have a rpi3b+ running latest os as headless with everything up to date and I use systemd-networkd for networking on it. I'm trying to connect a LTE usb modem to it for wan access. For that I use ...
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12 views

Using Raspberry Pi to deliver POE to other products through the ethernet port

Scenario is this: Have a raspberry pi being powered through a usb-c adapter. Have a 3g usb modem, that connects the pi to the internet. Have a camera device connected to the ethernet port of the ...
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1 vote
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71 views

Problems with Huawei me909u521 modem in Raspberry Pi 3 b+

I have the Huawei me909u521 modem attached to RPi 3 b+ via sixfab LTE hat (connected by GPIO). The Rpi is detecting the modem: pi@raspberrypi:~$ lsusb Bus 001 Device 004: ID 12d1:1573 Huawei ...
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1 answer
558 views

Problem configuring modem on Raspbian

I need to configure the [TRM240 modem][1] to work with a Raspbian system. I followed the procedure reported in the answer [here][2], but the connection isn't working. I attach some screenshots ...
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1 answer
353 views

Share USB modem internet via hotspot to devices

I have Quectel LTE USB Modem connected to Raspberry Pi 3 Model B+ and able to access internet from modem. Now, ifconfig has wwan0 connection with IP. I want to start hotspot on Pi and share the ...
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1 answer
569 views

Connect to internet with Sakis3g when modem establish network connection

RP-beginner here, Background I'm using a shell script called Sakis3g to connect to internet and it works very well (It uses wvdial in the background and sets up a ppp-connection) I want Sakis3g to run ...
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47 views

Huawei Modem port number not showing up

I tried configuring the modem dongle for Raspberry Pi 4 but the port number is not showing up. Under ifconfig I see eth1 I tried looking under dmesg command I can't see anything. I looked for all the ...
2 votes
0 answers
190 views

Set SIM PIN in /etc/network/interfaces?

I've a Huawei E3372 usb modem and works out of box when I connected in my Raspbian Strech. With others Huawei modems I needed vwdial setting up, but with E3372 seems it not use wvdial to up network ...
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344 views

Raspberry Pi Raspbian - check LTE USB modem SIM card phone number

I have LTE USB modem attached to Raspberry Pi 4 with Raspbian installed. LTE modem was configured automatically and Internet connection is up. I don't remember SIM card phone number. How can I check ...
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2 votes
2 answers
929 views

SMS Gateway project using ZTE MF920V 4G MiFi modem

For a personal project, I'd like to use an MF920V modem. It's a mobile 4G modem made by ZTE. (Not to be confused with USB dongles). The idea is to code an api with Python or Nodejs to remote control ...
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553 views

Raspberry Pi backup 3G USB modem - can't connect

I'm trying to configure 3G USB dongle as backup solution to WiFi. Using Raspberry 4b, latest raspbian in which seems usb 3G dongles automatically converted to modems as I see. So I'm skipping usb-...
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1 vote
2 answers
1k views

SIM800 UART Serial Corrupted Response Problem

I am adding a SIM800L module to a home burglar alarm system I'm building around a RPi3. I've already encountered, and overcome, the usual power problems, and I can successfully use the module to make ...
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657 views

Configuring WWan LTE modem (SIM7000a)

Does anyone have any experience hooking up a WWAN? I picked up a SIM7000A and re-activated one of my AT&T hotspot sims to work with it. This particular one is a PCIE card but came with a PCIE to ...
3 votes
0 answers
1k views

setup wifi hotspot with 4G hat [closed]

I have bought a 4G hat for my raspberry pi 3B+ (the sim7600 waveshare for europe) and followed these instructions for setup. It is running the latest version of raspbian and I have internet on the ...
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2 votes
1 answer
1k views

USB modem ppp0 automatic connection improvement

I have a USB modem (Huawei E1552) connected a RPi running Raspbian Stretch. It is connected at remote location that needs persistent internet. For example, for ssh or pushing code remotely. I have ...
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205 views

ttyusb don't appear in raspberry

I work with a LTE modem. Normally when I plug it, ttyUSB0/ttyUSB1/ttyUSB2/ttyUSB3 appear. Suddenly it stops working and I don't know what happened. Why does it happen? Thank you in advance Update: ...
2 votes
1 answer
2k views

Raspberry Pi 3 + USB data modem as a Wi-Fi Router

I have a USB data modem (Huawei E3131) and a RaspberryPi 3B+. I would like to use the Pi as a Wi-Fi hotspot. Pi connects to the internet via USB data modem and creates hotpsot for other devices. So, I'...
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0 votes
2 answers
170 views

Raspberry Pi share ppp0 via USB

I have the following setup: Raspberry Pi 3 Sixfab 3G/4G Base Shield v2 Queltec UC20 I have connection to the internet over ppp0 interface but now I want to connect the Instantel Micromate sensor to ...
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1 vote
3 answers
471 views

Reading time off of a cellular modem with python 2.7 and pyserial

TL;DR: I need to read the time off of my Hologram Nova USB cellular modem on /dev/ttyACM0 and update the system clock after the pi restarts. I'd like to do it in Python but it isn't reading the ...
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1 vote
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599 views

usb_modeswitch error Huwaei E3372 4g Modem

I tried following this tutorial to change mode of my Huwaei E3372 modem https://blog.unixweb.de/usb-stick-lte-telekom-magenta-eins-huawei-e398-modem-raspberry-pi/ System Raspberry 3B+ OS: Raspbian ...
3 votes
1 answer
512 views

3G modem connects and ping is working, can't access web

Huawei E369 3G modem connected to RPi3 Model A+ and managed by NetworkManager cli: connects allows for pinging websites has working DNS But does not allow for performing any http requests using CURL ...
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271 views

Unable to access internet in PC when connected to Pi(ppp0) via Ethernet

I am using openhabian. I have managed to get the Pi connected to the internet via the Quectel UC20-G modem after which I get a new interface called ppp0 with IP address 49.225.37.106 as shown below. ...
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VNC Viewer does not recognize modem ip

What could be the possible cause for me to be able to configure the ppp0 signal from a modem perfectly on my Raspberry Pi, but not being able to access it (the rpi) via VNC via the IP provided by the ...
1 vote
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162 views

Rasbperry 4g usb modem + WIFI priority

When i connect raspberry to router by WIFI and plug usb modem - wifi have priority over internet. i need that 3g modem will get internet and have priority over WIFI. but i still can connect by local ...
1 vote
1 answer
256 views

Raspian Lite (3B+) And Huawei modem N3372 Problem

Problem: eth1 has no internet (interface created by modem). usb_modeswitch is installed. But I can ping it Setup: - Raspberry Pi 3 B+ (Raspbian Stretch Lite 2018-11-13 Kernel version:4.14) - Huawei ...
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2 votes
0 answers
3k views

Raspberry pi 3 a+ stretch and huawei e3372h-153 port forwarding

At the moment I was able to get internet on my raspberry pi 3a+ with Huawei e3372h-153, a 4G LTE USB-dongle. When I enter address http://192.168.8.1 it gives me a config web page of a dongle. I ...
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1 vote
1 answer
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Raspbian and Netgear 779s LTE modem

I've been having trouble the last two days figuring out why my NetGear 779s modem isn't working fine with Raspbian. I installed NetworManager, and did sudo systemctl disable dhcpcd and sudo systemctl ...
5 votes
1 answer
3k views

A USB modem not working on Raspberry Pi 3 Model B+

I have been trying set up USB modem on my pi (Raspberry Pi 3 Model B+) but have not been successful. The modem in itself is recognized - lsusb shows the entry for the device - but I cant't get it ...
1 vote
2 answers
15k views

How to connect with a 4G modem on RPi?

I recently purchased a Huawei e397u-53 4G LTE USB modem, marketed as the Cricket Boltz, for use as a modem with the Raspberry Pi 3 B+. This product comes with a Windows drivers which I installed on a ...
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1 answer
3k views

Module 3G/4G USB for Raspberry Pi 3 Model B [closed]

I want 3G/4G dongle to connect it via USB to my Raspberry Pi because I want Internet when there is no WiFi to send same scanned data. Any suggestions (Works in France) ?
2 votes
2 answers
11k views

Steps to configure wwan0 interface (huawei modem, movistar SIM)

I've been struggling since yesterday trying to configure a wwan interface that I get when I plug in a huawei modem into my rpi. This is what I have on /etc/network/interfaces but it just doesn't work (...
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769 views

Problems with Huawei E3372h USB Modem

I have been trying to connect to the Internet with this Huawei E3372h modem for a couple of days now. I have tried everything from sakis3g , wvdial , qmi-network to modemmanger , networkmanager but ...
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1 answer
73 views

How to bind modem device to network interface

I have a Huaweii modem connected to a raspi zero w running on a Raspbian stretch lite, on the standart Raspbian wheezie, this modem was shown in ifconfig output as usb0, but now on stretch lite there ...
1 vote
0 answers
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Problems with wwan0 interface

I am trying to connect to a 4G LTE network using Huawei E3372 modem. ifconig shows a wwan0 interface when the modem is connected. This is what it looks like: wwan0 Link encap:Ethernet HWaddr 46:...
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