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Questions tagged [gsm]

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

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0answers
1k views

Change XBee shield TX/RX Software serial?

I am looking to have an Arduino UNO stack with a GSM Shield and an XBEE shield for wireless communication. However, since the GSM Shield requires digital pins 2 and 3, I would have to reroute the RX/...
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0answers
430 views

Garbled data output from sensor through XBEE?

I have a fio v3 + a 9DOF sensor hooked up to an XBEE. On another UNO board, I have a GSM shield and another XBEE board. The fiov3 is supposed to sample data from the sensor, send it through the xbee....
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0answers
214 views

GSM shield SIM card troubles

So I'm trying to use the GSM shield to communicate with my smart phone. The SIM card that came with the shield only works with other devices on that network, and it's an obscure latin network that I ...
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1answer
529 views

Arduino GSM Shield not responding?

I'm trying to get my Arduino GSM shield working with the example "Send SMS" code provided. However, when I upload and compile the program, the serial monitor displays "SMS Messages Sender" and nothing ...
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1answer
3k views

Combine Code Arduino GSM Shield and Adafruit GPS Shield

I have a problem to combine both code for Arduino GSM Shield and Adafruit Ultime GPS Shield. I already change my code to the basic one like examples. I think i found the problem. The problem is when i ...
1
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0answers
688 views

Can you interface GSM, WiFi, and Bluetooth LE shield to Arduino?

I have a project that requires the following three shields and I was wondering if the Arduino has enough space to interface all of them at the same time. I am thinking of connecting each shield into a ...
0
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2answers
478 views

Problem with NFC on Arduino MEGA

My Objective : I am trying to send my Mifare's unique number with some other parameters to my server database. As soon as the tag come closer to NFC, it detects, and some additional details are ...
0
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1answer
392 views

GSM arduino to webservice not working

I have setup a arduino with a SIM300 based GSM board. I have Tx of Arduino connected to the Rx of GSM board Rx of Arduino connected to the Tx of GSM board Gn of Arduino connected to the ...
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2answers
9k views

Not able to send SMS to Mobile using GSM900A and Arduino Uno

I tried the code shown below (found here) void setup() { Serial.begin(9600); //Baud rate of the GSM/GPRS Module Serial.print("\r"); delay(1000); Serial.print("AT+CMGF=1\r")...
7
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2answers
11k views

Difference between SoftwareSerial and Serial

From the sample code #include <SoftwareSerial.h> SoftwareSerial mySerial(10, 11); // RX, TX void setup() { // Open serial communications and wait for port to open: Serial.begin(57600); ...
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4answers
10k views

AT+CSTT throws an error

I am getting an error on AT+CSTT="TATA.DOCOMO.INTERNET","","" What am I missing here? Code void setup() { // Open serial communications and wait for port to open: Serial.begin(9600); while (!...
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1answer
1k views

Code does not pass `gsmAccess.begin(PINNUMBER)==GSM_READY)` [closed]

I am not able to get my code to pass if(gsmAccess.begin(PINNUMBER)==GSM_READY) { I have modified the PIN number on my sim card to be 0000, and yet its stuck on begin. How do I prepare the SIM ...
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0answers
486 views

SIM 900 + Arduino Mega attachGPRS problem, GPRS_READY

I have connected my GSM module to my Arduino. Using AT commands I am able to connect to internet. Using the following link of tutorials, I tried to connect to internet http://arduino.cc/en/Tutorial/...
2
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1answer
400 views

Connecting a Arduino to FT232

I found this wonderful breakout board based on FT232. I wonder if I can use this board for connecting my arduino to a USB dongle for 3g/GPRS connection ? From what I understand this board can be ...
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2answers
522 views

Arduino GSM Module with network GPS

I have looked through the AT command set of Arduino GSM Shield boards. I dont find any AT command that provides network GPS. I wonder what I am missing. Why isn't it possible for GSM module to provide ...
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2answers
2k views

Arduino stacking wifi and gsm shield

I'm fairly new to this and I need some help before I buy anything... If I understand correctly I can buy an arduino, couple of shields and just stack them one onto another if they are compatible... ...
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0answers
199 views

GPS - Speed doesn't update as should - EM408 & Arduino Mega & GSM

I'm developing a system that will get the GPS signal and send it though the GSM with information about position, speed and temperature from some digital sensors. Currently I'm using the GPS EM408, ...
1
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1answer
878 views

GSM library , sendSMS, string instead of char

I used the GSM library that comes together with arduino 1. Specifically the sendSMS part. I managed sucesfully to send SMS. Now the thing is, inside this library the SMS to send is stored in a char ...
2
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2answers
429 views

Understanding arduino shield schematics

I am researching the schematic of the arduino GSM shield. Link is this: https://www.sparkfun.com/datasheets/DevTools/Arduino/cellular%20shield-v12.pdf What i do not understand is the upper right part,...
7
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2answers
4k views

SerialGSM for GSM shield without SoftwareSerial

SerialGSM is a library for simplifying GSM shields. This is sample code for sending SMS: #include <SerialGSM.h> #include <SoftwareSerial.h> SerialGSM cell(2,3); void setup(){ Serial....
5
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2answers
8k views

Receiving SMS by Arduino GSM Shield and control the LED with the content of this SMS?

I am using Arduino GSM Shield receiving SMS from an Android app. And the content of this SMS will control a LED. If the content of this SMS is not "off", the LED will be on and the content will be ...
2
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1answer
1k views

Send text according to an ultrasonic measurement, on battery

I have this big bucket where I would like to install an arduino on the top of the bucket where it would calculate the % of the bucket being filled up with water. Then, every day at night the arduino ...
1
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1answer
1k views

SoftwareSerial error

I have arduino , upon arduino I have Arduino GSM shield (Tx-2, Rx-3, Modem reset-7) and upon it, I have the Adafruit GPS Logger shield. I am trying to send sms of Latitude from the GPS Logger shield ...
1
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1answer
867 views

Unable to read text file from server

I saw the Web client Example , In the example, the server connection is initialized in setup(). But I want the server to update the text file every time. So, I need the server connection to be in ...
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1answer
531 views

How to update a text file dynamically

I have Two Arduinos, One with the help of sensors it will dynamically updates in to my server database. Other Arduino, reads the stored contents from the server database and sends sms to phones. Now, ...
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1answer
215 views

How Server request happens?

Can somebody explain the below code, like how the server understands, how the request goes to the server from the below code. if (client.connect(server, port)) { client.print("GET /abc.txt"); ...
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1answer
1k views

SMS in modem's memory

I am working on SMS communication with my phone and Arduino. My intension is simple. When somebody send an SMS, the Arduino should read a text file located on my server and forward the content to the ...
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1answer
433 views

Receive SMS example gives me a garbage values

When I run my Receive SMS example code, By default every time I get the same thing.I am trying to send sms to my sim card present in the Arduino GSM shield. I don't want this message. How to solve ...
1
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1answer
2k views

GSM and GPS shield pin conflict

I have an Arduino GSM shield and I plan to purchase an Adafruit GPS shield. The GPS module uses Pin 7 & 8 for Rx and Tx, but the GSM shield uses Pin 7 for Modem Reset. Will the overlap on pin 7 ...
3
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1answer
2k views

How to read a Text file from server and store to a separate variable?

I am working on reading a text file from the server, using http://arduino.cc/en/Reference/GSMClientConnected. It gives me this code: char path[]="/asciilogo.txt" I want to store only the contents ...
3
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2answers
16k views

How to receive data from my server database to a variable in my Arduino?

I am learning to work with the client - server communication. I am able to communicate with my server and able to store values in the table. But I want to receive one of the specific data from the ...
1
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3answers
4k views

client.connect() fails except the first time

I am communicating with the Web server's database via Arduino GSM shield + GPRS connectivity void loop() { if (client.connect(server, port)) { ....... } else { ...
4
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3answers
4k views

Arduino shield stacking

I have an Arduino GSM Shield mounted on an Arduino Uno. Can I stack this GPS shield above Arduino GSM shield? Will there be any pin configuration problem? In GSM Shield hardware pin’s configuraton ...
0
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0answers
29 views

client.connect() fails except the first time [duplicate]

I am communicating with the Web server's database via Arduino GSM shield + GPRS connectivity void loop() { if (client.connect(server, port)) { ....... } else ...
11
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2answers
8k views

Getting the contacts/ storing contacts to SIM card

I have the GSM shield and is there any ways to get the stored contacts on the SIM card? It seems that the GSM library does not support writing data onto/ reading data from the SIM card? My aim is to ...
1
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1answer
860 views

Set up an Arduino Cellular Shield SM5100B

I'm trying to set up an Arduino Cellular Shield SM5100B to send SMS. My setup is: Arduino UNO R2 SM5100B "Movistar" SIM Card (Chile) I've uploaded a code similar to the one described here, but ...
2
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1answer
2k views

Can the official arduino GSM shield library be changed to work with hardware serial on mega

I have a complex requirement that uses a number of libraries that depend on timing I.e. OneWire. When using the official GSM shield on a mega, it loads a version of software serial to talk to the GSM. ...
0
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1answer
365 views

GSM library getIPaddress returns local network address 10.X.X.X

I have a Mega board and a GSM shield. I'm using Arduino's example "TestWebServer". The serial monitor shows that the GSM is connected, and returns a IP. However, the IP is always 10.X.X.X. Isn't ...
9
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4answers
960 views

Which shield to use for GPRS?

I'm planning to build a device that would read some sensor data and send it via GPRS, eg. once per day. (Not that original, yeah.) But my problem is choosing a GSM/GPRS shield. The official ...
5
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2answers
10k views

Connection problem with Arduino Mega 2560 and GSM shield ( official M10)

As I don't want to stack the shield over the mega 2560 board, I try to connect only the pins that used for GSM communication. Here are my connection: Pin 3 on Mega <==> Pin GSM Rx on Shield Pin ...