Questions tagged [gsm]

GSM is a very widely used standard for communication over mobile phone networks.

Filter by
Sorted by
Tagged with
0
votes
0answers
17 views

How can I set the SIM900a to Europe?

I got a chinese SIM900a module but it can't connect to the network (I live in Europe). Is there a way to get it work on Europe mobile networks?
-2
votes
0answers
11 views

how to make multiple calls using arduino and gsm module? [on hold]

i'm able to make one call using default sketch that is available in the arduino ide software..but i just want to make multiple calls at a time to notify the alert according to my project requirement.....
1
vote
1answer
38 views

Arduino Communication with Sim 900

Im using an arduino uno and a sim 900, the simcard is setup and working as I can make a phone call to it and it rings. The sim 900 is powered via the power jack and the uno is currently powered using ...
0
votes
1answer
14 views

Wire SlaveReceiver : will the registered function in onRecieve interrupt/conflict with loop block?

I am currently researching on I2C, and I made a configuration that has MasterWriter that transmits data to a SlaveReceiver that will store the data received from Master, into an SD card, and then ...
0
votes
1answer
36 views

Is there a simple HTTP(S) library that doesn't rely on WiFi?

I'm trying to implement a Mobile Network (only) for the ESP32 using Arduino IDE. So to be able to connect to website up/download files etc. I need to be able to handle various HTTP PUT/GET/POST ...
-2
votes
0answers
10 views

Facing problem in interfacing arduino uno with Ethernet shield and GSM SIMCOM900A

Empty message inserting after interface. Even data is not inserting to database also using ethernet and GSM.
0
votes
0answers
21 views

SIM800 Serial Communication Result Not As Expected

SIM800 module and a standard Arduino, I have a function to communicate by software serial with the module: String SIM800_send(String Incomming){ SoftwareSerial SIM800(SIM800_TX_PIN,...
0
votes
1answer
28 views

Split serial monitor output to only save part of the output

This is the output i get from the serial monitor from using a HM10 in . How could i go about splitting the data using arduino uno. I only want to save the last 12 digits before the :- (4CAA0DE091B7) ...
0
votes
1answer
69 views

creating HTTP persistent connection, to create 'smooth' data over GSM sending

Project goals Send data over GSM to firebase Fast sampling - need to send 16 bytes every half second to firebase Send data using GET or POST to server with PHP script, that redirect data to firebase ...
0
votes
0answers
28 views

Send data from arduino to server using GSM, TCP

My actual connection is like: Arduino -> GPRS(http)-> my server(php script)-> firebase <-android plotting app But it only allows to send some data once every 2 - 3 seconds (depending of ping to my ...
0
votes
0answers
13 views

SMS text after lower case 'w' get lost in standard GSM library's SendSMS example [duplicate]

I am using an SIM 900A GSM module with arduino Uno and this program given in GSM library example https://www.arduino.cc/en/Tutorial/GSMExamplesSendSMS. But if there is lower case 'w' in sms text, then ...
1
vote
1answer
33 views

How Programing the nodeMCU Through OTA using GPRS?

How Programming the nodeMCU Through OTA using GPRS? Hi Everyone I need big help. Actually, I m using NodemCU one of my project. the setup in Remote location, that place dont have a wifi option so I ...
0
votes
0answers
24 views

Exchange data between Arduino and a remote server

I want to read name and user code stored in a magnetic card by using my arduino and then send this information to a remote server. The server runs an application which is able to control if the user ...
0
votes
0answers
35 views

Arduino MKR GSM 1400 - inaccurate location (latitude/longitude)

Situation/Context: a) I'm using MKR GSM 1400 b) In an urban area in the US with good network coverage. c) As SIM card I tested both Twilio and Hologram. d) As antenna I am using this one https://...
0
votes
0answers
8 views

Arduino GSM Implementation

I want to send sms to a number if and only if that number is in the radius of the arduino with GSM module. I already have GPS into it. Should i integrate a ultrasonic sensor to get the distance and ...
0
votes
1answer
41 views

Conditions with GSM module SIM900 doesn't execute

I'm executing this code to control a LED with GSM SIM900 message but there are two problems. First, it receives messages sometimes and some times doesn't. The second is that it doesn't execute the if ...
0
votes
1answer
39 views

Problem with String& argument of a function

I am trying to send SMSs using a GSM module with Arduino Mega. I have followed a tutorial and downloaded the SIM908IDE100 library. I am using the function SendSMS(String&, const char [27]);. It ...
0
votes
1answer
137 views

Shield SIM808 EVB V3.2 charge a Lithium battery?

hello friends do you know if, can this shield (SIM808 EVB V3.2) charge a lithium battery directly or i need additional hardware?, I know that module has conection for battery but it can charge it?
0
votes
0answers
81 views

How I can connect module GSM SIM800L?

I bought a GSM module, and I want to connect it with Arduino but I have a problem. I linked GSM SIM800L with regular LM2596 12 V 2 VA I changed tension to 5 V, So far the GSM is ...
0
votes
0answers
75 views

Arduino Mega with SIM800L running Modbus TCP/IP

I'm trying to set up an Arduino Mega with a SIM800L module and trying to get Modbus TCP running on said Mega. I've set Modbus TCP over wifi and serial before but I used libraries for those. The ...
1
vote
1answer
86 views

Send big amouts of data to PHP script via gsm module SIM800L

I'm looking for a way to get lots of sensory data from my Arduino Micro to a PHP script. My current attempt is using the following AT-commands: Sent: [AT+HTTPPARA=URL,www.example.com/newData.php?data=...
0
votes
1answer
28 views

SIM800l doesn't respond on arduino micro

I want my Arduino Micro to interact with my SIM 800 L module. But unfortunately nothing happens, may you can help me figure out where I made a mistake. Here's my wiring: Summary of my wiring: ...
0
votes
0answers
16 views

GSM SIM900A SMS

I used this code to send SMS and connected the Arduino's Rx to SIM module Tx and Arduino's Tx with SIM module Rx but SIM module does not send SMS. I also changed the baud rate to 2400 but it did not ...
0
votes
0answers
26 views

empty message receive

#include <GSMSim.h> #include <SoftwareSerial.h> #define RX 7 #define TX 8 #define RESET 13 #define BAUD 9600 GSMSim gsm(RX, TX, RESET); const int doorSensor= 2; int doorSensorState= 0; ...
0
votes
0answers
28 views

GSM and LCD functions don't work together

I'm trying to create a system that allows me to water my plants and turn on the LED strips through SMS. I'm also displaying data from the sensors on an LCD. Both of these things work separately. When ...
0
votes
1answer
51 views

Arduino and SIM900 unavailable all the time

I have the a problem with my arduino MEGA 2560 and the SIM900 module. I want to save the outputs of the AT commands, but I never get a chance. If I print mySerial.available() I only get 0. Sending SMS ...
0
votes
0answers
29 views

SIM800L save message to draft in sim memory

I want to save some data in sim memory as draft message and later read it. I am Using Arduino DUE and SIM800L Basically my main target is to keep in check the total uptime(approximate, error of upto 2-...
0
votes
0answers
19 views

nRF24L01 and sim800L not working together

Good day, I would like to ask some help for my program code regarding the problem of nRF24L01 and sim800L. I have the code below #include <Sleep_n0m1.h> #include <Time.h> #include <...
0
votes
0answers
42 views

Partial output with reversed question marks when sending SMS with GSM900A module

I am using Arduino Uno along with GSM 900A Module to send SMS to my phone. This is the code #include <SoftwareSerial.h> SoftwareSerial mySerial(9, 10); void setup() { mySerial.begin(9600);...
0
votes
0answers
59 views

How can I use my sim808 as Both GPS and GSM module for this code

#include<LiquidCrystal.h> LiquidCrystal lcd(7, 6, 5, 4, 3, 2); #include <SoftwareSerial.h> SoftwareSerial gps(10,11); // RX, TX //String str=""; char str[70]; String gpsString=""; char *...
0
votes
0answers
25 views

Not able to receive string from database

A few days ago I posted a thread as I was not being able to send data to my database online. It worked when I changed the GPS module. Now I am trying to retrieve data from the same Server and i'm not ...
0
votes
2answers
59 views

How to perform two tasks in one loop in Arduino?

I am trying to make a weather monitor using Arduino. I want my weather monitor to send me a message of the weather data every 5 hours using GSM sheild. Also, there is an LCD on my weather monitor ...
0
votes
1answer
66 views

I want to get incomming call number and compare it

Hello i want to get and compare incomming call number, it works but not as I want. When im calling from good number it print that I was calling form saved number when the number is stop calling i need ...
0
votes
1answer
75 views

Can't Interface SIM900a With Arduino Uno

I've got the following module of SIM900a. My connections are: VCC -> External 5 Volt 1.5 Amp Supply GND -> Common GND TX -> Arduino RX (Pin 0) RX -> Arduino TX (Pin 1) I hear a ring ...
0
votes
0answers
40 views

Arduino Uno Issue with SIM900 Network registration

I have a SIM900 module on which I have a T-Mobile Data Only SIM card (pin unlocked). I am powering on the SIM900 module using a power adapter which can supply voltages 4.5, 5, 6 7,5 and 9 V and 2.1A. ...
0
votes
2answers
27 views

Servo starts to shake when I added SIM900.begin(19200);

Hello I'm working on this mini project. This project works this way, Whenever someone type wrong password, LCD will display "Access Denied" and send an alert to SMS using GSM module. I used 2 ...
0
votes
0answers
25 views

Interfacing TTP229 touch sensor with arduino and gsm module

I have been working on an Arduino based call and message project which I am following from this link https://circuitdigest.com/microcontroller-projects/call-and-message-using-arduino-sim900-gsm. This ...
0
votes
0answers
198 views

Nodemcu + GSM IOT-GA6

I've connected my NodeMCU to GSM module using GND, RX and TX. I use At Comand Tester. When I try to get sim status or something I get error for example: Unable to get Sim status. Only AT comand ...
0
votes
0answers
69 views

I want to connect my NodeMcu v3 to gsm

I have a problem with connecting my NodeMcu to gsm. I have bought GSM module but I have sim code on card which I can't and that is the problem because I've found some libraries but there are no ...
0
votes
0answers
50 views

SIMCOM SIM900 AT+QAUDCH=x; returns ERROR

For some reason, some commands return ERROR, like AT+QAUDCH=1 (headset). I tried unplugging the headphones and the mic and it didn't work. code: #include <SoftwareSerial.h> SoftwareSerial ...
0
votes
3answers
64 views

Code getting stuck waiting for GPS Output

I'm basically trying to make a device that pulls the GPS information from a SIM808 and pushes it to a server online via GPRS. I am sorry as I am not good at programming so ive spent days trying to ...
0
votes
1answer
89 views

My SIM800L isn't working in England. Alternative board for new EE/T-Mobile 3G PAYG SIM?

EDIT: I live in the UK, and I've read some articles just now that this module never worked after 2017 in the USA because it needs "a two frequency network"?, and support for 2G(phased out in America?)....
1
vote
1answer
367 views

Problem sending SMS from a GSM SIM900

I have a laser security system project with a GSM SIM900 and a few sensors. I'm using an Arduino Mega 2560, and everything is working normally, except the GSM is not sending an SMS to the phone and I ...
0
votes
1answer
128 views

Gsm Sim800l Module

I am using below code for send sms but SMS Sent sucessfully but save in SIM memory & not able to see message text : serialSIM800.write(“AT+CMGF=1\r”); //sending SMS in text mode delay(1000); ...
0
votes
0answers
35 views

Send and receive SMS's

I would like to send and receive SMS's with my Arduino project. I have an A6 SIM900A GSM module with me which is from Chinese. However, it does not work and does not accept any AT commands. So, I ...
0
votes
1answer
393 views

GMS send SMS text messages many times

The GSM sends many SMS text messages and does not stop. How to send only one SMS? This is my code: #include <SoftwareSerial.h> SoftwareSerial mySerial(9, 10); char msg; int vibr_pin = 7; void ...
0
votes
1answer
47 views

Not receiving the complete messange sent by SIM900

I need help with SIM900 and Arduino Mega. I do not receive the complete message that I send from my phone. (Arduino Mega _ SIM900 _ Alimentation 9V/2A) Message sent: 1234567891234567890 Message ...
0
votes
1answer
358 views

Unexpected result with the GSM module A6

I have a GSM A6 module, like this one. I'm going to use an Arduino Nano as a bridge to communicate with it, I have an external power source (since I read that this module can consume up to 2A at its ...
0
votes
2answers
820 views

how to make GPRS/GSM SIM900 shield work with gps neo-6M module using Arduino UNO board

I'm a beginer to arduino program.i will like to make a program that will send latitude and longitude on my mysql database.so since 3 days i try to learn how to use all this material(GPRS/GSM SIM900 ...
0
votes
1answer
376 views

How to configure TinySine 3G module (SIM5320E) for HTTP GET request

I recently bought a 'TinySine 3G shield (SIM5320E) 900/2100Mhz' based on Adafruit_FONA libraries to use with Arduino Mega 2560 R3. It successfully registered with Vodafone AU. Other functionality ...