Questions tagged [gsm]

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

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85 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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30 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 ...
3
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2answers
114 views

How can Rpi connect to a GSM Module and send SMS messages?

This is my GSM Module: Is anyone familiar on how to connect this to my Raspberry Pi 3? Is still all I need or I have something missing?
2
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1answer
133 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 ...
1
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1answer
57 views

SIM900A with Raspberry Pi 3 Weird Error and Behaviour

I am working on integrating Sim900a on Rpi3B. As usual connecting to TX->Rx, Rx->Tx (GPIO14, GPIO15 in Rpi) - following diagram from this link: How do I connect GSM SIM 900A to a Raspberry Pi 3? When ...
2
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1answer
983 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 ...
1
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1answer
52 views

GSM module serial is spamming messages on the serial port

I am using the GSM/GPRS/GNSS HAT for raspberry pi zero and after running a simple script import serial import os, time # Enable Serial Communication port = serial.Serial("/dev/ttyAMA0", baudrate=...
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2answers
89 views

Running as a Web Server

I have a RPI 4. I am running buster os I have created a web serer. I use nginx to handle connections If I access it via my private network it works well. If I now use a GSM modem on-board my rpi) ...
1
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0answers
551 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 ...
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1answer
175 views

Response to a incoming call using python script

I am trying to implement a system using Raspberry-pi and SIM-800 modules. Now I can see incoming calls from my python script, but it can not parse data. import serial serialport = serial.Serial("/...
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0answers
103 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 ...
1
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1answer
63 views

Why can't I hear the sounds when making a call?

I was able to make calls using my RPI 3 model B+, Huawei E153 GSM Modem, and minicom. I can see that the cellphone I'm calling was able to answer my call (from my Pi). I plugged in my headphones to ...
0
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0answers
262 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
44 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 ...
-1
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1answer
161 views

Segmentation fault error. Trying to loop a python program [closed]

I'm using AT commands to send data over http, but the problem is that sometimes the program has an error and wont run again until I reboot and the GSM. Im using a crontab and also running the file as ...
1
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1answer
248 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'...
0
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0answers
74 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 ...
3
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1answer
204 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 ...
0
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1answer
572 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
864 views

Waveshare GSM/GPRS/GNSS HAT not connecting to Cellular network

I have this HAT i bought for a pi project I am working on. I get the device to power on, I can connect via USB from PC, and can connect from pi too. However, the NET LED just blinks every second, ...
2
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1answer
1k views

Some hardware for multiple SIM cards SMS sending

I need some hardware for multiple SIM cards SMS sending. Preferably 200 sim cards. I would use Linux and some development boards like Raspberry pi etc. I have used raspberry with a USB dongle. Please ...
1
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0answers
262 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 ...
0
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1answer
2k 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) ?
0
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1answer
366 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 ...
0
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1answer
339 views

RPI2 interfacing with GSM sim 900

I want to interface rpi2 with gsm module, below is the code for it in python. After running the code i am not getting anything as output except newlines. I have enabled serial interfacing for rpi2 and ...
0
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0answers
255 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 ...
1
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5answers
16k views

How do I connect GSM SIM 900A to a Raspberry Pi 3?

I want to connect the GSM SIM 900A to a Raspberry Pi 3 but I don't where the problem is. I used this configuration: https://qph.fs.quoracdn.net/main-qimg-c124f9e741afd438969e869e52d0df6b Then I ...
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0answers
39 views

custom mp3 player/phone for blind person controlled by mini numpad keyboard [closed]

My 86 y.o. father can barely see and can not use ordinary keyboard and touch-screen devices. Also it's hard for him to use modern youth-oriented miniature devices with small keys on them. Obviously, ...
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1answer
115 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
2k views

Sim900 arduino shield on Raspberry

Just bought this GSM module that is suppose to support raspberry pi but i cant seem to find any wire up tutorial. https://www.ebay.com/itm/253162539156 Can someone give a help? btw: i'm looking for ...
1
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1answer
1k views

Serial Communication in Raspberry pi 3 B+

I want to communicate between Raspberry pi 3 B+ and GSM GPRS A6. I tried and I am unable to send data to GPRS Module from Raspberry pi. Now, I know that GPIO serial port is disabled by default in ...
1
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0answers
83 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, ...
0
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1answer
1k views

Wvdial and 3g Dongle

Hey i'm trying to reach internet trought 3g dongle, i have tried many different variations of wvdial.conf but every time it stucks at same section i have even tried different 3g dongles but even them ...
0
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1answer
134 views

It is possible to stack two different Add-Ons in Raspberry Pi 3?

I need to create a project that has GPRS/GSM and GPS, but there are no products with both functionalities. I found some Add-Ons that may work but I'm not sure if there is any way to stack both. I know ...
2
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0answers
123 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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1answer
2k views

GPS + GPRS in Raspberry Pi 3 Model B

I'm a newbie on what regards to electronic projects, but I will like to set up a GPS tracker to transmit coordinates over a GPRS internet connection (3G or so). I found some Add-Ons that may work but ...
1
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0answers
516 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 ...
2
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1answer
2k views

Using Mobile WiFi Router as GSM Modem

right now I am kind of digging into the topic of using the RPi to read/write SMS and if possible use it make/receive Phone calls. I have this Router (Huawei E5786), Model E5786s-32a. It seams to ...
0
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1answer
738 views

How to communicate with the cloud using a Raspberry Pi connected to internet using GSM module sim900?

I am working on a project, in which I need to receive sensor data from remote sensors to internet cloud and sending control signals from cloud to controller. I am using GSM sim900 to access internet ...
2
votes
2answers
634 views

How can I provide my raspberry pi 2 with 3G/4G data?

I'm currently working on a project on my Rpi 2 model B that requires connection to internet through a cellular network via 3G/4G connection. I found some usb modem dongles and some modules, but they ...
0
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1answer
210 views

NO display with raspberry Pi.High voltage at 3.3V output.(Is it dead?)

Recently I was using raspberry pi which was working fine. I tried to use GSM module with it and powered it using the 3.3V pin of raspberry pi and suddenly my raspberry pi rebooted and after it gained ...
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2answers
1k views

Connect GSM module via serial0 and GPS via USB

I have a GPS module connected vía UART in the GPIO. Now I want to add a GSM module to my proyect but my TX RX pins are busy with the GPS. I saw an adapter to connect the GPS through USB with a UART ...
5
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2answers
164 views

Gather data in rural areas

I am building a prototype with temperature and humidity sensors for rural areas and I am trying to determine which is the best way to gather data, since Internet may not be available (no WiFi). I am ...
3
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1answer
2k views

Sim800 not responding to AT commands

I have a Sim800 GSM module hooked up to pins 8 and 10 of the a PI B+ running the latest version of Jessie. I have configured Jessie so that nothing else is using the TXD0 and RXD0 pins. If I connect a ...
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1answer
95 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 ...
1
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0answers
231 views

Using Cooking Hacks GPS/GSM shield with Android [closed]

I am new to RPi and was hoping that users had experience using the GPS/GSM shield with any Android OS. If there is some success with this device working with Android, I was going to give it a shot. ...
3
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3answers
13k views

How to connect GSM SIM800L with RaspberryPi?

I can find a lot of search results for connecting the SIM800L with arduinos, quite a few specs, some answers (1, 2, 3); but what i can't find is how to connect this GSM module to a Raspberry Pi B+ 1.2....
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0answers
178 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 ...
1
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1answer
1k views

Internet access with SIM900A very slow on Raspberry Pi

I assume that I'll need a SIM Card Atm I'm using this SIM9000A module connecting it at RXD/TXD pins and establishing ppp connection, however, it doesn't work very well, it takes about 5~10 seconds to ...