Questions tagged [modem]

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

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1answer
2k views

Manually dialling a USB 4G modem

I have been trying to setup up a 4g usb modem with my raspberry pi running raspbian. The modem is recognized and I'm able to query imsi, signal strength and other details by running AT commands using ...
4
votes
2answers
17k views

Problems with Huawei E3372 USB Modem with Raspberry Pi 3

I have been trying to get 4G LTE functionality using the Huawei E3372 USB Modem. I followed this tutorial, but the device id didn't change after the reboot. What might be the problem? It worked fine ...
2
votes
2answers
924 views

Establishing how to power on a HAT using GPIO

I have a combined GSM/GPS HAT and a Pi Zero. I can turn on the HAT manually using the power button, but would like it to power on at boot via /etc/rc.local. I can do something along the lines of this, ...
1
vote
3answers
93 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 ...
1
vote
2answers
52 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 ...
1
vote
2answers
2k views

Power on modem at boot

I have two modem HATs. HAT A is one of these: https://www.itead.cc/wireless/gsm-gprs-and-wifi/raspberry-pi-sim800-gsm-gprs-add-on-v2-0.html HAT B is one of these: https://www.waveshare.com/product/...
1
vote
1answer
4k 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 (...