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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.

180 questions
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Sending sensor data to a MySQL server with Arduino and Sim900a

I am trying to send sensor data to a MySQL server of mine but can't achieve that. I followed several similar examples here in other questions but it isn't working. The Arduino code is given below. The idea is to measure the voltage and current…
AchilleS
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Interrupt the arduino micro-controller, on receiving a text message in GSM SIM900 module

Is there any way to interrupt the arduino if a new message arrives in SIM 900 module? In my project, a lot of tasks are going on, so I need the GSM module to interrupt the ardiuino, if a new message comes, and act according to my requirement. How do…
Sayan Tapadar
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Serial communication(Serial UART) in raspberry-pi with windows 10 iot core and sim 900a

We were building and an app that could send and receive sms from sim900a module interfacing with raspberry-pi with windows 10 iot core. In windows form application:- We are going to read the serial data by making a call to ReadExisting method of…
Shreevatsa Y S
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How do I send data to my server from sim800 / sim900 using MQTT protocol

I have been trying since past few days to connect my sim800 module with Arduino to send data to server. I have been referencing this library : https://github.com/elementzonline/SIM800_MQTT However, when run, it simply gets out of the loop after…
Abhay Bh
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How to post raw text from sim900 module?

I am trying to post a raw text from a sim900 module for which I have set the content type already but I am unable to figure out the documentation on how to send the actualy content inside my code.…
Bazinga777
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Sending and receiving sms with arduino, using sim900

I have a strange problem with my project. I am able to send and receive SMS messages but for some reason not from the same project. This little one sends a message, and is working properly: #include SoftwareSerial SIM900(7,…
Damir Salkich
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SIM900 AT Commands response parsing

I am using SIM900 GPS/GPRS module shield connected to an Arduino Uno, how will I be able to parse the response of my AT commands? Or how will I be able to remove the 1st line printed in the serial after sending an AT command? AT+CMGL="ALL" +CMGL:…
Ralph
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Error: Invalid number format while sending SMS with SIM800L

I'm using a SIM800L GSM module connected over USB-Serial to my computer. When I try to send a SMS I got an error: AT+CMGS="+4915xxxxxxxxx" > Test (Ctrl+Z) +CMS ERROR: Invalid number format (incomplete number) I’m obviously connected to the network…
Hambert
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Getting bad request response When sending data to server using SIM900

AT+CSTT="live.vodafone.com"$0D$0A OK AT+CIPSHUT$0D$0A SHUT OK AT+CIPMUX=0$0D$0A OK AT+CLPORT="TCP",80$0D$0A …
Hiren
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arduino and gsm module sim900 how to get messages phone number?

i have arduino and gsm module sim900 , i want get the number when i receiving message . how can do that is there's command or function in c++ language . thanks SoftwareSerial SIM900(7, 8); void setup() { SIM900.begin(19200); // for GSM shield …
Safaa
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Strange encoded response to AT commands

I get strange encoded messages from my sim900 module when I enter AT commands. I have set the baud rate to 9600. I've tried using several terminals but to no avail. Any help is appreciated. Thanks
Ranganatha Rao
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ERROR: SIM900 doesn't answer. Check power and serial pins in GSM.cp

iam using itead sim908 Gsm/Gps/Gprs Module with Arduino Uno, iam trying to send Gps coordinates by Sms message and by gprs to internet server, but cant run it both same time, Although it's work separately. when i try to send GPS coordinates via SMS…
Tawfeeq Amarneh
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Arduino GSM SIM900 does not receiving messages

Following URL will be appear my GSM module and it is included data sheet of the SIM900 module. http://www.pennybuying.com/gsm-gprs-module-sim900-development-board-lbs-mms-support-arduino-uno-ttl-rs232.html I have connected only RX,TX,GND and PWR pin…
Amila Indrajith
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how send sms by Arduino Nano and Sim900a

I try to use Arduino GSM library for sending sms.I have an Arduino Nano Board And an sim900 module and that connect together by serial port.but can't send sms. also for testing I use this example code in Arduino website: #include #define…
Sadeq
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SIM900 gprs web with arduino

I have a problem with this simple code. #include SoftwareSerial SIM900(7, 8); // configure software serial port void setup() { pinMode(9, OUTPUT); digitalWrite(9, HIGH); SIM900.begin(19200); Serial.begin(19200); …
Isaac R
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