Questions tagged [gsm]

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

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493 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/...
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1answer
414 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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1answer
888 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 ...
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2answers
438 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,...
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1answer
889 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
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
920 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
443 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 ...
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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 ...
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 { ...
0
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1answer
377 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 ...

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