Questions tagged [gsm]

GSM is the predominant standard used for 2G cellular networks for mobile devices.

29 questions with no upvoted or accepted answers
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124 views

Automate routing metric with multiple interfaces

I have a RPi with 3 interfaces: eth0 - standard ethernet eth1 - GSM modem wlan0 - WiFi How can I automatically prioritise the interface that has access to the internet (eg. I can ping 8.8.8.8 or ...
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2k views

Using Raspberry Pi with Arduino GSM/GPRS Shield

Raspberry Pi Model B GEEETECH Arduino GPRS Shield V1.0 (bought from: bit.ly/1G0KYR7) ^ Similar somewhat to: Seeed's GPRS Shield V1.0 | Link: seeedstudio.com/wiki/GPRS_Shield_V1.0 (has more ...
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1answer
1k views

SIM800 GSM Module To Raspberry Pi UART Serial Communication Problem

I am new to Raspberry Pi Zero and I want to connect it with a GSM module for GPRS connectivity. I bought the SIM800A GSM module but its LED is not even blinking one single time. I am able to turn on ...
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0answers
33 views

Raspberry pi as a cell phone for calling

I am building a device for car security and i am using raspberry pi 4. I want to establish a connection between the people inside the car and the outside. I want to make calls from mobile to raspberry ...
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23 views

How to setup the E3531

I seem to went the same path as described in "Connecting Raspberry Pi 3 with Huawei Surfstick 372". Bellow are the details of my case. WHEN on wi-fi The command ip addr show returns: 1: lo: <...
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1answer
160 views

How can Rpi4B python use USB Serial AT commands to control a 4G/LTE MiFi modem to text SMS?

I have purchased this 4G HAT and I'm using it with this module in a raspberry 4. I use the USB connection. I installed a ppp connection and everything is working correctly. My problem is: how do I ...
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0answers
26 views

Why are my AT commands inconsistent?

Devices: RPi3B+, USB to TTL CH340, SIM800C GSM module Here are the connection between the USB to TTL and GSM module respectively 5V-VCC, TxD-RxD, RxD-TxD, GND-GND Then I attach this USB to TTL to ...
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0answers
699 views

SIM7600 4G HAT Rpi3B+ Setup Problem

I am trying to get a SIM7600E-H-4G-HAT running on my Raspberry Pi 3B+, but it is not working. Here is what I've done so far: Inserted my SIM-Card, connected the antenna to Main, connected the entire ...
1
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1answer
458 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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1answer
596 views

How to connect GSM module to Raspberry PI3 and also using Bluetooth of Raspberry PI3

I want to use Bluetooth of Raspberry Pi3 and also I want to Connect GSM module sim800l to Raspberry Pi3 ,in this instruction Bluetooth will be disable , what is the the best way to use both of them? ...
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267 views

what is causing my error 3 for sending SMS from GSM module

I have a Raspberry Pi 3 running Raspbian Stretch I've connected it to an Elemnt Engineerz Guild SIM900a GSM modem via the GPIO. I can't get it to send an SMS I connected gnd and 5v to gnd and 5v ...
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0answers
85 views

Incorrect encoding when software flow control is enabled sim808

I have an issue with my sim808 module and its encoding mechanisms when software flow control is enabled. The issue is simply bad encoding of the lowercase w character (baud rate 115200, Data Bits: 8, ...
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537 views

Raspberry pi voice encryption over GSM

I'm not expert in RPI, so I need help to make a voice encryption model for calls over GSM. I have lot of questions. So I want to use raspberry pi 3 and Sim900l for GSM. I will need a microphone for ...
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181 views

How to connect RPi 2B with SM900?

I have a Raspberry Pi 2B and a SM900 module and I want to make a UART connect with jumpers using raspberry GPIO and the shield pins. My problem is how could I make it? How to power up the SM900? I ...
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113 views

Why was my last AT command routine is not viewed in the output?

As I was using pigpio ,so that I can use the GPIO pins as UART or bit banging the serial. I am using a SIM900 gsm module. Here is the code: import pigpio import time import sys TX=23 RX=18 baudrate=...
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147 views

Listening for keystrokes through a GSM module

So, I would like to connect a GSM module to my Pi to act as a phone, and be able to make a two-way call to my cellular phone. I know this is possible, and have seen a few tutorials on this (https://...
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0answers
23 views

Raspberry Pi and FONA with hologram.io SIM, unable to connect, LCP terminated by peer

Unable to get a Raspberry Pi 4B with FONA module and hologram.io SIM card running. Have followed all tutorial steps on the Adafruit tutorial up to validating a ppp network interface described in the ...
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0answers
36 views

SIM800C GSM Module with USB to TTL Serial CH340 Module

I'm planning to use this instead of connecting the pins of the GSM module to the pins of the RPi3B. Since the voltage for the TxD and RxD pins of the SIM800C is 5V and the TxD and RxD pins of the ...
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0answers
125 views

RPI GSM Add-on SIM800 AT commands are not working

I am trying to send sms using RPI Add on v22 module and Raspberry-pi 3+. I have mounted this module on top of Raspberry-pi. When I use minicome using minicom -D /dev/ttyS0 -b 115200 -o I get the ...
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324 views

Interfacing SIM800L with PPP [LCP Terminated by Peer]

I am using SIM800L, and managed to interface it with RPi3. After successful configuration on /etc/ppp/peers/rnet, my file looks like this connect "/usr/sbin/chat -v -f /etc/chatscripts/gprs -T ...
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52 views

Sim800L stops responding after working 10-12 days, after that it needs power reset

Sim800l is not responding anymore after a few days of continuously working and requires restart/reset. It won’t recover by itself or respond to any commands unless a restart or power off is made. If I ...
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0answers
81 views

How to attach Air208 GSM micro sim card board to raspberry pi zero w that already has display attached on GPIO

I have a Air208 GSM micro sim card board that I want to attach to my raspberry pi zero w to make calls. The issue is that I already have a 3.5" tft display attached to the pi zero w via GPIO (header ...
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1answer
386 views

Problem with HAT GSM/GPRS/GNSS/Bluetooth

I have: Connected rasspbery pi zero with HAT GSM/GPRS/GNSS/Bluetooth by gold-pins. List item Switched UART to B-position Raspbian version: 9 (stretch) When I used pwdrkey i have only PWR and STA ...
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0answers
261 views

Get modem msisdn from incoming smstools

I have device and modem connected with sim card. And I have raspberry and smstools installed in the device. It all works very good with smsd configuration. When sms is sent to the the number of the ...
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0answers
1k views

Raspbian network-manager-gnome

Because I wanted to connect a GSM modem in Raspberry PI, I installed network-manager-gnome Does anybody know why the following messages appears after I set-up any connection? Connection activation ...
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0answers
2k views

GSM Modem using USB to RS232 - Sending SMS doesn't work after reboot (web browser)

I'm attempting to setup a Siemens TC35i GSM Modem with my Raspberry PI using an USB to RS232 adaptor. http://www.abcproducts.com/abc-products-rs-232-usb-to-9-pin-db9-serial-adaptor-cable and create a ...
0
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1answer
6k views

Interface SIM 900A GSM MODEM with Raspberry Pi 2 Model B via I2C

I have bought SIM 900A GSM MODEM. It is working perfectly on serial interface but it require an extra Serial to USB converter module. So I want to interface it with my Raspberry Pi 2 Model B via I2C ...
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1answer
116 views

I have a problem about connect 3g shield to raspberrypi

import serial portwrite = "/dev/ttyUSB2" port = "/dev/ttyUSB1" def parseGPS(data): print "raw:", data #prints raw data if data[0:6] == "$GPRMC": sdata = data.split(",") if ...
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1answer
98 views

Gsm and Touch display on Raspberry pi

Im trying to connect a touch display and a gsm module with rasberry pi at the same time , but the pins which are needed to connect the gsm module with rasberryy pi module are already occupied by the ...