A-II GSM Shield, GSM/GPRS/SMS/DTMF v.2.105 - for Arduino and Raspberry Pi - assembled

Description

The module working with Arduino and Raspberry Pi that provides communication in GSM and GPRS standard. It allows for voice chat, sending SMS messages and transfer of data. On the board are: two connector for SIM cards (dual SIM), microSD slot which allows you to storage the data, output and input of audio in the Jack 3.5 standard to connect headphones and microphone, and a U.FL slot for mounting externalantenna(in our offer, you will find the appropriateadapters).

 

This version has soldered, extended connectors for the Arduino.

 

Specification

• Driver: Quectel M85
• Supported standards: GSM / GPRS
• Frequencies: 850 / 950 / 1800 / 1900 MHz
• Support of the DTMF standard 
• Dual SIM option
• Support for AT commands via encrypted SSL communication
• Built-in PCB antenna with the possibility of connecting external version via U.Fl connector
• The possibility of choosing the power source via jumper:
  • USB
  • built-in 5 V controller 
  • the input voltage VIN
• Built-in connectors:
  • for SIM card (2 PCs of dual SIM)
  • for the microSDmemory card up to 32 GB
  • microUSB - built-in UART - USB converter (cablesold separately)
  • outputs of audio Jack for connecting the headphones / speakers
  • audio Jack inputs for connecting microphone
  • connector U.FL for external antenna (antennasandadapters U.FL - SMAsold seperately)
• Included are extended soldered connectors for Arduino
• The connector's system is suitable for Arduino:Uno,Leonardo,Mega 2560,Mega ADK
• Output reset button of the Arduino
• Works with Raspberry Pi: 3, 2, B+, A+
• Three mounting holes with a diameter: 3mm
• Board sizes: 83 x 54 mm

 

Detailed module description can be found in the user guide in firstandsecond part, and onthe website of the manufacturer. Description of how to send SMS using Arduino, available is inthis instruction.

 

 GSM shield in combination with the Arduino Uno board.

 

The connection to the Arduino

The system works as a shield for Arduino, using the following lead:

 

Pin Arduino Description GSM RX D2 Communication via the serial interface. GSM TX D3 Communication via the serial interface. PWRKEY D7 The control of the power supply of the GSM system (On/Off). STATUS D5 The status lead. RESET D6 GSM system's reset.

ARD-RESET

RST Output RESET of the Arduino.

5V

5V The supply voltage - 5 V.

Vin

Vin The input voltage Vin. GND GND The ground of the system

 

Examples of projects for Arduino:

• Home alarm system
• Smart doorbell
• Sending SMS and establishing a connection

 

Connection with the Raspberry Pi

In order to launch module with the Raspberry Pi, you must perform the following connections:

 

Pin RPi Description GSM RX 08 Communication via the serial interface. GSM TX 10 Communication via the serial interface. PWRKEY 16 The control of the power supply of the GSMsystem (On/Off). STATUS 12 The status lead. RESET 18  GSM system reset.

5 V

02/04 The supply voltage - 5 V. GND 06/14 The ground of the system

 

Sample programs for the Raspberry Pi:

• SMS gate

 

Useful links

• The manufacturer's website
• User manual 1
• User manual 2
• How to send SMS using Arduino
• Examples of projects
• Temperature logger
• Comparison of A-GSM with Arduino Shield
• How to use the libraries for Arduino Shield