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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 AT commands to SIM900 whilst pppd is active

I have a Raspberry Pi with a SIM900 GSM add-on board connected. I have managed to establish a GPRS connection with pppd by following this guide. (It's for a different GSM module but the steps are the same) I would like to periodically send an AT…
Ollie
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Raspberry Pi sim900 Default Internet Access

I have set up a ITEAD sim900 GSM module to interface with raspberry pi. I believe I have established a gprs connection to AT&T though wvdial as I get these results. --> WvDial: Internet dialer version 1.61 --> Initializing modem. -->…
infobug
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Interface NodeMCU (ESP8266) with GSM module

I'm a new user of NodeMCU and I would like to make it communicate with a GSM module like SIM900. Can I use the second UART terminal of ESP8266 to interface with the GSM module? Thanks.
Sawssen Bejaoui
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send sms with sim900 using arduino

#include #include #include #include "SIM900.h" #include #include "sms.h" Servo myservo; Password password = Password( "1234" ); //password to unlock box, can be changed SMSGSM sms; int…
drexxx
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sending Json data to server using AT commands

I am having a website which accepts json data with post method.It works fine when i try sending the request from POSTMAN rest client. When i am trying to the same using AT commands its failing. This is the AT sequence i tried AT AT+CREG?…
ganeshredcobra
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Simcom SIM 808 SIM900 Azure Iot Hub - authorization header not possible to add

I am using Simcom SIM 808 to post data to Azure Iot Hub. My problem is that Azure Iot Hub requires a SAS string in the Authorization header, but I can not find a way to add this header. Anyone have experience with sim 808 and Azure iot? Is it…
toupilsner
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How can I read date and time data from RTC of sim900 module using arduino?

#include "SIM900.h" #include #include "sms.h" SMSGSM sms; boolean started=false; int count = 0; void setup() { pinMode(5, INPUT); // input pin for switch Serial.begin(9600); if (gsm.begin(2400)) { …
Guitargang
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How to read data from UART in MikroC

Anyone here using MikroC to implement UART? I'm trying to connect a PIC18F4550 and SIM900. I want to use UART1_Read_Text(variable, delimiter, attempts). But since there is no specific length of the text that will be received, I'm trying to use NULL…
Granger
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How to prevent other phone/mobile numbers to send SMS command to Arduino?

INTRO: I'm a novice when it comes to Arduino programming and using AT commands. I already tried to search the whole internet and asked on Arduino forum, but I have no luck and nobody seems to give me a clear idea about it there. PROBLEM: So, I have…
Ren Bermudez
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How do I make an HTTPS request with SIM900 (Arduino)

I try to make an HTTPS GET request and make an HTTPS POST request with the data recieved... I am using an arduino UNO with the library GSM_GPRS_GPS_Shield_GSMSHIELD and the GSM GPRS shield SIM900. Here is my current code below: //include…
Ceci Semble Absurde.
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Send data from SIM800 to a server

Can somebody help me? I have problems sending data from a SIM800C to a website. The first problem is, I uploaded the following code to Arduino (I use the Serial Monitor in Arduino IDE to send AT commands to the SIM800 and read the…
Huy Nguyen
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Receive SMS and Make call using AT command with SIM900

I am having some difficulties with getting my python code working. I have Rpi2 with SIM900 module attach. I can make calls, receive call, send SMS even I can receive an SMS. But putting all together is giving me a headache. I have scroll over and…
user3343073
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AT+CSQ? returns error

I need help, i am working with Arduino UNO and a GPRS shield, which is powered with an adapter that outputs 12v 500mA. The sim card is placed properly, i checked this with the AT+CPIN? command, but when i try to check the signal level with AT+CSQ?,…
wokoro douye samuel
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Arduino Uno R3 + SIM900

I'm a programmer trying hardware I'm trying to connect a SIM900 shield I bought online. So I've followed plenty of tutorials out there to connect the SIM shield with the Arduino UNO. Well, it's not going so well. I've put an unlocked sim in it, and…
James
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Can arduino tell room temperature by voice call using sim900?

I'm building a temperature monitoring unit with arduino, LM35 and a 16*2 LCD display. Now I am going to integrate this unit by SIM900A GSM/GPRS module and I get temperature readings by SMS. Now my question is, can I get those values by voice…
Dileep
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