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Questions tagged [gsm]

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

25 questions with no upvoted or accepted answers
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0answers
116 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 ...
2
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0answers
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
180 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
147 views

SIM7600E-H-4G-HAT Raspberry Pi Setup

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
61 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'...
1
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0answers
199 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
78 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, ...
1
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0answers
458 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 ...
1
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0answers
174 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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0answers
97 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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0answers
143 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
56 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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0answers
114 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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0answers
26 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 ...
0
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0answers
49 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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0answers
41 views

Cannot connect to GSM 900A Module

I am working on a project that uses SMS to push data to a blockchain. I bought a GSM 900A Module and connected it to Raspberry Pi 3b+. The connections are as shown in this picture : https://i.stack....
0
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1answer
509 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? ...
0
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1answer
305 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
241 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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1answer
387 views

Alternating ppp0 and ppp1 interfaces

I was hoping I could use some expert help on my ppp interfaces. My setup is as follows. I have a Rpi 3 Model B that has two ppp connections (one 2G sim900 module and one 3G huawei dongle). My system ...
0
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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 ...
0
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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
104 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 ...
-1
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1answer
90 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 ...