Questions tagged [gsm]

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

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3answers
11k views

SIM808 module GSM working fine, GPS not working (No GPS ready message on power on)

I powered on my SIM808 module. It showed me following output: RDY +CFUN: 1 +CPIN: READY Call Ready SMS Ready It supposed to show GPS ready also. I sent AT command and return ok. However ...
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1answer
7k views

Which pins of an Arduino UNO can be used as Tx and Rx pins for connecting to GSM GPRS SIM 900A

I am using Arduino UNO and SIM 900A. Pins 0 and 1 are used as TX and RX. Is it possible to use any other pins?
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2answers
6k views

Arduino 4G LTE Shield

Is there by any chance a shield that can take an 4G LTE compatible SIM card activated by a carrier and establish a connection?
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2answers
2k views

Clearing arduino serial buffer

How to clear the serial buffer of arduino uno? This is my code to on and off the LED using sms from mobile using gsm module #include <SoftwareSerial.h> int Led=7; SoftwareSerial mySerial(9, 10)...
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5answers
15k views

How to send AT command to sim800l with SoftwareSerial

I have SIM800l module connected to Arduino and I'm trying to initialize it in my setup function with this code: #include <SoftwareSerial.h> //SIM800 TX is connected to Arduino D8 #define ...
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2answers
4k views

Arduino Mega + SIM808 GSM + GPS Module + Program Switch ON without pressing Push Button?

I am new to IOT and tried out integration and a small test code with an Arduino Mega + SIM808 + GSM + GPS Module. It works fine with the SIM808 Library. My requirement is to put it in an enclosure, ...
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1answer
67 views

message received from GSM contains parenthesis instead of curly braces

the GSM code i have been working out is up and running, I use JSON format in sending the data obtained by my sensors, but the JSON message I have been receiving contains parenthesis instead of curly ...
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2answers
2k views

GSM GPRS for sending an sms

I want to know if it is possible to send an SMS from a SIM900 using Arduinos to another SIM900. Problem: When the gsm is connected to the network, it does not send an sms; my airtime balance remains ...
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1answer
400 views

problem using GSM shield and GPS shield in one Arduino UNO R3

i try to program use the GSM shield Arduino with Arduino UNO i did it successfully but after that i try to use GPS shield but when i add the #include for the program i got the error #include <...
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2answers
385 views

What is more power efficient: GPRS or SMS for a GSM sim Arduino application?

I have a GSM shield for my arduino and am wondering the most efficient way to receive and send data to the cloud. The specific project I am looking to accomplish is starting my car from a web ...
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2answers
880 views

How to use web data from GSM Sim900 to be used as input for Arduino?

I have a GSM Sim900 connected to an Arduino Uno. I'm successfully able to use HTTP READ commands to show data from the web on the Arduino's serial monitor. It is showing complete HTML from that URL on ...
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2answers
866 views

How can I connect mysql with Arduino using GSMshield [closed]

How can I include mysql.h library in IDE of Arduino to connect Arduino to mysql database by using GSM shield?
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1answer
11k views

ARDUINO UNO+SIM808(GPS/GSM) SYNCHRONISATION

I started a project quite recently where I intend to combine the Arduino Uno and the sim808 module which has gps/gsm/gprs all together in one. The GPS functionality works fine. Just the GSM both ...
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1answer
2k views

Arduino to send sms one time only when a button is pressed

The LED_UPDATE() is called in my loop() function, I implemented it (tried anyways), to send sms as shown in the code such that only one sms is sent , because as the loop() keeps calling LED_UPDATE(), ...
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0answers
82 views

incoming GSM data stored as variable in code [closed]

I am using an Arduino Mega board with a SIM900 GSM. My goal is to be able to text the GSM with a value of two digits (ex: 79) and then store that value as a variable in the code. I know how to set ...
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0answers
896 views

GPRS/GSM SIM900 Shield not working with Arduino

I have a few questions related to GPRS/GSM SIM900 Shield not working with Arduino. To keep it short I have a list of concrete questions: Is the Arduino GSM library compatible with the Geeetech GPRS/...
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0answers
6k views

Arduino GSM receiving text and then storing value as a variable in code

I am using an Arduino Mega board with a SIM900 GSM. My goal is to be able to text the GSM with a value of two digits (ex: 79) and then store that value as a variable in the code. I know how to set ...
0
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1answer
84 views

Is Gsm antenna effect on microcontroller working?

in my embedded system I used patch antenna and Atmega 328 microcontroller,but somehow it causes the abrupt function of a microcontroller or reset. how can it be solved?
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0answers
532 views

Sim900 data logging through Sparkfun

I've been trying to upload data to data. Sparkfun's servers using HTTP commands, but I've hit errors every time I try. This is my code: #include <String.h> void setup() { Serial1.begin(...
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1answer
52 views

Regarding use of software serial two times

Can we configure two digital pins as serial pins using software serial library?
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3answers
20k views

SMS Receiving problem - Arduino Uno and SIM900A GSM Module

My intention is to control an LED according to the content of the SMS received. For example, if the SMS is "ON", turn on the LED and if it is "OFF", turn it off. I referred many sites and got the ...
2
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2answers
2k views

Which GSM-shield is most efficient for GPRS communication?

I tried Google, I tried a bunch of forums and I searched here. This question needs a final answer: Which GSM-shield is most efficient for GPRS communication? Since Arduino is the amateurs best ...
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0answers
2k views

How to control relay using SIM800 and Arduino Mega through SMS?

For my project I need to control relays through SMS and now I can send SMS from my SIM800 module which is connected to Arduino Mega R3. But I tried several shapes for AT commands to receive SMS and ...
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2answers
3k views

DB:NO RESP Using inet.httpPOST on loop()

I'm using SIM900 module + arduino uno + gsmlib.org library. I'd like to send a string to endpoint on my API , and it worked correctly for the first time when I using inet.httpPOST function in setup(),...
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1answer
161 views

Print the response from GSM shield

I have a GSM shield connected with my Intel Galileo board. I intend to connect the board with serial communication at a baud rate of 115200 instead of the GSM library. I want to print the results of ...
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1answer
2k views

Arduino GPRS (GSM) shield (SIM900) no long pins

I have bought a SIM900 shield for an ordinary Arduino Uno board. The problem is that it doesn't have long pins on the bottom side, making it impossible to click on mu Arduino Uno. The shield I have is ...
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1answer
522 views

How to perform a data transfer to an external server

So I'm doing a project that involves getting sensor data from several sensors, and then sending them to an external server when a tragic occurs. But I've been having trouble figuring out how to send ...
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1answer
4k views

GPRS SIM900 and GPS NEO-6M don't work together

I'm trying to get GPS coordinates and send them to my API through the GPRS SIM900 and GPS NEO-6M shields. In setup(), I first start the GPRS shield and call the function that connects to the internet....
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1answer
10k views

Send JSON via POST on SIM900 shield with AT commands

I'm trying to send a JSON POST in SIM900 shield with AT commands. After I call the AT+HTTPACTION=1 command, it returns a 601 error: +HTTPACTION:1,601,0. I saw here that the error was 601 Network ...
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0answers
774 views

how to detect the incoming message from sim800 GSM module

I am designing an motorcycle security system and I need to receive the message from the user.Hence i need to detect the incoming message and read the number and data from the message
2
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1answer
559 views

Can I connect an Arduino GSM Shield directly to a PC?

Is it possible to communicate with and use the GSM shield directly from the computer, without using an arduino board?
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1answer
2k views

connecting SIM900A GSM/GPRS module Arduino Mega

i have bought following SIM900A GSM/GPRS module. I need to connect it with Arduino Mega. Can anyone answer me which pin i need to connect to Arduino??
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0answers
159 views

Why After instancing TinyGPS , serial stop working?

I have GSM shield (and Arduino UNO) works fine with this code : #include <GPRS_Shield_Arduino.h> #include <SoftwareSerial.h> #include <Wire.h> #include <Suli.h> #define ...
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1answer
689 views

What are the components of a Xively HTTP PUT request to send to my SIM800 GPRS module?

I have an Elecrow GPRS shield which I want to use to post temperatures from 3 x DS18B20s to Xively. The example code is a mystery to me. You can find in full at this link: http://www.elecrow.com/wiki/...
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0answers
2k views

Sim800L HTTP post request stop working after a while

I am desperate to get my SIM800L module (http://www.ebay.co.uk/itm/SIM800L-GPRS-GSM-Module-Board-Quadband-QUAD-BAND-Antenna-for-MCU-Arduino-/321992759287) sending POST requests for a long period of ...
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1answer
2k views

How to set Delay on GSM shield?

I bought a Gsm module recently(not official arduino shield) and i connect it to Arduino uno. The problem (I guess) is , i can't set delay properly, the terminal send it too fast that i missed it or ...
0
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1answer
462 views

What should I do to communicate with GSM module?

Sorry, im a beginner, i tried to program an automatic doorlock using sms. But, I dont understand what happen with this error, what should I do? Add library? The error said that Pstring wasnt declared, ...
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3answers
180 views

Arduino GSM Shields stacking

I'm researching options for a project in which I need to send/receive SMS messages to/from multiple users of different service providers. Hoping to reduce costs, I'm thinking of forwarding the ...
2
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1answer
2k views

Sending data to a webserver with GPRS/GPS Shield (U-blox Sara G-350)

I am working on a project for tracking cars. I am using an Arduino UNO to receive the position from GPS/GPRS shield. I am OK on obtaining the coordinates position. Now I need to send the position to a ...
2
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0answers
448 views

Help with school project (Arduino GSM and Thermal printer) [closed]

I'm with some friends from my school and we have started to do a project where we send an SMS text message to our Arduino UNO (with GSM module), which then print the text message on a thermal printer(...
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0answers
137 views

SIM900A GSM/GPRS Shield Transaction per minute

I'm planning to buy SIM900A GSM/GPRS Shield for Arduino Uno. I wanted to create an application that sends SMS to a list of mobile numbers, let's say 1000 mobile numbers. Is it applicable to use ...
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1answer
642 views

SendSMS example sketch hangs at PINMUNBER if statement

I'm using an Arduino shield connected to an Arduino Uno for sending text messages. I'm using one of the in built examples from the Arduino IDE for sending SMS by name - sendsms in the GSM examples. ...
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0answers
318 views

How to send latitude and longitude as text message on mobile? [closed]

I want to check speed at certain time interval, if speed is greater than certain (speed) value then send latitude and longitude as text message
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1answer
438 views

How to limit the number of message that an Arduino sends to a phone without terminating it

I just stayed on delay() since that is the only thing I know but the thing is delay() cannot be interrupted. What I'm trying to achieve with this code is: When the soilSensor detects moisture it ...
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1answer
10k views

Sim800 sim card requirements

What kind of a sim card is required for sim800 module? I know it must be activated and must be valid. But about 2g, 3g or LTE...What kind of a sim card in overall should I use with this module?
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1answer
14k views

How to check if a GSM module is working or not?

I wanted to know if my GSM sim800 is working or not. A mishap occured while I was experimenting around with my GSM module and I arduino uno. The link to the module which I bought: http://www.ebay.in/...
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2answers
3k views

Using Rx and Tx pins(0 and 1) on Arduino Uno for GSM

I am using a GSM module sim800. My module responds to the output given by my PIR sensor and sends sms according to it. My module has got +5V, GND, Rx and Tx pins. What are the pin connections that I ...
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1answer
623 views

Problem while writing sketch for GSM module sim800

I wanted to my GSM to recieve SMSs. I have written a sketch for it. But while verifying the sketch an error pops out in this part: if (sms.available()) { sms.remoteNumber(senderNnumber, 20); ...
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1answer
607 views

arduino and gsm module receive

Can you help me with the codes? I have gizduino(arduino clone), i used the codes in receiving sms from the internet but what i receive is a symbol "y" with two dots at the top. Whats wrong? My gsm is ...
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2answers
376 views

Functions of GSM

I am currently working on an arduino project and wanted to use a GSM module. This is my first time working with a GSM module. So I had a few queries. What can a GSM module sim900a do with arduino ...

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