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Questions tagged [sim900]

The SIM900 is a complete Quad-band GSM/GPRS solution in a SMT module which can be embedded in the customer applications.

The SIM900 is a complete Quad-band GSM/GPRS solution in a SMT module which can be embedded in the customer applications.

Featuring an industry-standard interface, the SIM900 delivers GSM/GPRS 850/900/1800/1900MHz performance for voice, SMS, Data, and Fax in a small form factor and with low power consumption. With a tiny configuration of 24mm x 24mm x 3 mm, SIM900 can fit almost all the space requirements in your M2M application, especially for slim and compact demand of design.

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Reception data in SIM900 with TCP/IP connection

I have a reception problem in SIM900 data via web server. I establish a TCP / IP connection between the web server and SIM900, I'm sending data to the web server successfully but my problem is receiving data to SIM900. I'm testing in some trials…
hamda
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Insert variable | Data base | AT commands | SIM900

I trying to send data temperature from Arduino to data base... I've finished the connection, but I need replace a part of String, that is the static URL:…
Maclos
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SIM900 GPRS: Consecutive AT+CIPSEND

I'm having some trouble being able to consecutively use AT+CIPSEND with the SeeedStudio SIM900 GPRS module on Arduino. This is my sequence of AT Commands (using SSCOM3.2): AT+CIPSTART="TCP","xx.xx.xx.xxx","80" OK CONNECT OK AT+CIPSEND > PUT…
Shreyas
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Upload a file to a server usin SIM900

I am trying to upload a file to a server using AT commands and SIM900. First I tried to use HTTP to do it, but I was unable to upload the file. I could transfer data in url encoded and to make POST with the data in the body, however I couldn't send…
MiguelB
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Sending SMS from mobile to gsm module through lpc2148

I am trying to do an electronic notice board i.e E-NOTICE BOARD using lpc2148 and gsm module. Here basically, I'm trying to send an sms from a mobile phone through GSM and I want it to be displayed on the LCD screen. I'm using SIM900A GSM module.…
Sheetal Shetty
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opening a webpage using sim900

how to open a webpage using arduino and sim900 module I am about to open a webpage using gsm sim 900 module I tried using this code I am not familiar with the AT commands so this code is only show ok as a response to the code in the serial monitor…
nemo nemo
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Arduino Sim900 with no echo but SMS was sent out

I just got a new Sim900 and connected to an Arduino Uno. I used the code below to send a text to myself. I received the text on my cell, but I did not receive any echo on my serial monitor (ie. "OK"). I have tried swapping the RX/TX pins and…
blue cao
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Better option than strtok for parsing numbers from a string in c?

I am using a TIVA TM4C to get messages about balance and expiry on a SIM card in a SIM900 cell phone modem. Below is the code I am using to parse the string. I am concerned because the code relies on spaces being in specific locations. It seems like…
LShaver
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GSM Module code Not Working On GSM breakout board

I'm in a situation and need some advice. Scenario 1: Arduino Uno/Genuino + ICOMSAT SIM900 Module(http://www.itead.cc/icomsat.html) (placed the jumpers such that Digital Pin 2 is rx and 3 is TX on the shield) Code Used: The send receive SMS example…
abhishek chattopadhyay
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Arduino Uno + GSM Shield SIM900 TCP Client Dont Receive Data

I need to communicate an Arduino Uno R3 with Tinysine GSM Shield (sim 900 module) to a NodeJS Server Socket using TCP/IP sockets. So, the embedded system is a TCP client. I need the Arduino sends some message and receive the answer, using the…
Luiz Fernando da Silva
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Arduino.Read Serial, create String, search into the string, clean String

I am trying to work with the sim900, what I am trying to do, is: 1- read the serial port, 2- input everything into a string, 3- search a parameter in that string, 4- clean the string. The code is really simple, but i cant understand what i am doing…
Jose Luis Lujan
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How to Send AT commands to SIM900 while pppd is running

I have a Raspberry pi with SIM900 GSM module. currently i am using ttyUSB0 as pppd but i also want to send AT commands (send/receive SMS) to SIM900 while pppd is active. I was created multiple virtual serial ports (like gsmtty1,gsmtty2 etc) but…
ratna gk
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SIM900 Data usage Get Vs Post

I am using a Sim900 to send data to a web server from 5 sensors by calling: http://www.xxxxxxxxx.com/script.php?x=23.5&y=21.7 etc. etc. This data then gets placed in a SQL database using PHP. The page is empty except for html headers and the short…
JamieS
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arduino uno + GSM sim900

I need some guidance for making LED ON-OFF using Arduino Uno and GSM SIM900 with the help of internet data. Also how to setup free hosting server so that I can communicate my arduino with android app.
Aqib Mak
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send SMS for 1 time with arduino GPRS SIM900 if an iput is HIGH

I faced a problem to send 1 SMS if an input is HIGH,and if it is LOW==> no SMS to send,if LOW to HIGH==> send 1 SMS. this code not working,just sent SMS when I turn the GPRS on,and after nothing is happened. mclopez helped me,thank you,but not…
Tariq Talbi
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