Tags: SIM900A, Cellular, Module, GPRS, 3G, GSM, 2G

GSM SIM900A Cellular Module GPRS 3G GSM 2G

  • 99.00 AED
    • Ex Tax:99.00 AED
    • Product Code: SIM900A
    • Availability: In Stock
    SIM900A is a GSM module that functions like a phone. It can send a message, call a phone number and use GPRS to send data.The size of the module is 49*50, all the new and original device.The serial port circuit: support for 3.3V single-chip microcomputer. TTL serial port support3.3 and 5V single-chi..

    SIM900A is a GSM module that functions like a phone. It can send a message, call a phone number and use GPRS to send data.

    The size of the module is 49*50, all the new and original device.

    The serial port circuit: support for 3.3V single-chip microcomputer. TTL serial port support

    3.3 and 5V single-chip microcomputer.

    The SIM card circuit to increase the SMF05C ESD chip.

    Antenna circuit: guarantee short and straight, so as to ensure the signal strength.

    Two power supply interface: VCC5, 5V DC above 1A. Computer 5V power supply can be early computer USB. DC long data circuit over larger recommended 5V1A. VCC4, 3.5--4.5V power supply, ibid., suitable for lithium battery.


    Onboard Resources:

    Serial port circuit(with protection)

    The antenna interface circuit(SMA bend female port)

    SIM card circuit(flip SIM slot)

    4*3.5 fixture hole 4pcs

    SIM900A serial port output terminal

    SIM900A General Specification:

    • Dual-Band 900/ 1800 MHz

    • GPRS multi-slot class 10/8

    • GPRS mobile station class B

    • Compliant to GSM phase 2/2+

      • Class 4 (2 W @ 900 MHz)

      • Class 1 (1 W @ 1800MHz)

    • Dimensions: 24x24x3mm

    • Weight: 3.4g

    • Control via AT commands (GSM 07.07 ,07.05 and SIMCOM enhanced AT Commands)

    • SIM application toolkit

    • Supply voltage range: 3.2 ... 4.8V

    • Low power consumption: 1.0mA(sleep mode)

    • Operation temperature: -40°C to +85 °C

    • Fax: Group 3, Class 1

    • Data

      • GPRS class 10: max. 85.6 kbps (downlink)

      • PBCCH support

      • Coding schemes CS 1, 2, 3, 4

      • CSD up to 14.4 kbps

      • USSD

      • Non-transparent mode

      • PPP-stack

    • SMS

      • Point to point MO and MT

      • SMS cell broadcast

      • Text and PDU mode

    • Voice

      • Tricodec

        • Half rate (HR)

        • Full rate (FR)

        • Enhanced Full rate (EFR)

      • Hands-free operation (Echo suppression)

      • AMR

        • Half rate (HR)

        • Full rate (FR)

    • Firmware Support

      • FOTA

      • MMS

      • Java (cooperate with Iasolution)

      • Embedded AT

    • Other features

      • 0710 MUX protocol

      • Embedded TCP/UDP protocol

      • FTP/HTTP

    • Interfaces

      • Interface to external SIM 3V/ 1.8V

      • Analog audio interface

      • RTC backup

      • SPI interface (option)

      • Serial interface

      • Antenna pad

        Step 1: Material Preparation

        Picture of Material Preparation

        In this tutorial, you will need :

        1. GSM SIM900A (MINI V3.9.2)
        2. Arduino Uno Board and USB
        3. Jumper Wire
        4. Power adapter 5V
        5. SIM card
        6. Breadboard

      Step 2: Booting Up SIM900A

      Picture of Booting Up SIM900A
      Picture of Booting Up SIM900A
      Picture of Booting Up SIM900A
      2 More Images

      1. Insert your SIM card to GSM module and lock it. (picture 1 and 2)
      2. power up your gsm by connecting it to Arduino's 5V and GND (picture 3)
      3. Connect the Antenna (picture 4)
      4. Now wait for some time (say 1 minute) and see the blinking rate of ‘status LED’ or ‘network LED’ (D6, refer picture 5) //GSM module will take some time to establish connection with mobile network//
      5. Once the connection is established successfully, the status/network LED will blink continuously every 3 seconds. You may try making a call to the mobile number of the sim card inside GSM module. If you hear a ring back, the gsm module has successfully established network connection.

      Step 3: Pin Connection

      Picture of Pin Connection
      Picture of Pin Connection

      You can see a TTL pin with 3VR, 3VT, 5Vr, 5VT, VCC and GND on your sim900a near your power supply pin. You have to connect GSM's 5VT to Arduino D9 and GSM's 5VR to Arduino's D10 for serial communication between arduino and sim900a module.

      Step 4: Basic AT Command

      1. To change sms sending mode : AT+CMGF=1

      mySerial.println("AT+CMGF=1");

      2. To read SMS in text mode : AT+CNMI=2,2,0,0,0

      mySerial.println("AT+CNMI=2,2,0,0,0");

      3. To make a call : ATD+60XXXXXXXXX; //replace X with number you want to call, change +60 to your country code

      mySerial.println("ATD+60XXXXXXXXX;"); 

      4. To disconnect / hangup call : ATH

      mySerial.println("ATH");

      5. To redial : ATDL

      mySerial.println("ATDL");

      6. To receive a phone call : ATA

      mySerial.println("ATA");

      Step 5: Library

      Picture of Library

      SoftwareSerial is a library of Arduino which enables serial data communication through other digital pins of Arduino. The library replicates hardware functions and handles the task of serial communication. To be able to interface gsm module with arduino, you will have to download this library and extract it into your Arduino's libraries.


      Attachments

      Step 6: Sample Source Code

      Picture of Sample Source Code
      Picture of Sample Source Code

      Download the sample source code below and open it on your Arduino IDE. Select the correct board and port and upload it into your Arduino Uno Board.
      the rest of the tutorial on this LINK

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