Description
The new version of the module working with Arduino and Raspberry Pi that provides communication in GSM and GPRS. Based on Quectel M95, it allows for voice calls, sending SMS messages and transfering data. On the board are: 2 slots for SIM-cards (dual-SIM), slot for microSD cards which allows you to save the data, output and input audio in the standard Jack 3.5 for headphones and microphone and a slot u.FL for external antenna (in our offer, you will find the appropriate adapters).
Specification
- Driver: Quectel M95
- Supported standards: GSM / GPRS
- Frequencies: 850 / 950 / 1800 / 1900 MHz
- Support standard DTMF
- Dual SIM option (one currently active)
- Support for AT commands
- Built-in PCB antenna capable of connecting external versionvia a connector.FL
- 5 ways of power
- UART: 2.8 V to 5 V
- The choice of power source via jumper:
- USB
- built-in controller 5 V
- the input voltage VIN
- Built-in connectors:
- for SIM ( 2 PCs of dual SIM card)
- for the microSD memory card up to 32 GB
- miniUSB - built-in converterUART - USB (cablesold separately)
- Jack audio outputs to connect the headphones / speakers (870 MW)
- Jack audio inputs Jack for a microphone
- connector.FL for external antenna (antennasandadapters u.FL - SMA are not included)
- There are no connectors for Arduino
- System of the connector is suitable for Arduino: Uno, Leonardo, Mega 2560, Mega ADK
- It is also compatible withRaspberry Pi
- Led out RESET button of the Arduino
- Works with Raspberry Pi: 3, 2, B+, A+
- Three mounting holeswith a diameter of: 3mm
- Board sizes: 83 x 54 mm
|
Detailed module description can be found in the user guide in the first part and on the manufacturer's website. Description how to send SMS using Arduino, is available in this instruction. |
In our offer, available is also shield A-GSM II with connectorsfor self-soldering.
The main differences between the A-GSM and A-GSM II
| Feature | A-GSM | A-GSM II |
|---|---|---|
| The main system | M85 | M95- program compatible on 98 %. |
|
The modified control signals POWER and RESET |
By default, low status activated with high position |
By default, high status activated with low state |
| Connecting connectors | microUSB | miniUSB |
| Working voltage of UART | from 3.3 V to 5 V | from 2.8 V to 5 V |
| The number of ways of powering | 3 | 5 |
| The device requires a good quality of supply. We recommend the use of an external power supply of min. 5 V / 1 A when powered from USB or the 12 V / 500 mA when powered by Vin. You should not power the shield from the USB port of the computer. |
The connection to the Arduino
The system works as a shield for Arduino, using the following conclusions:
| Pin | Arduino | Description |
|---|---|---|
| GSM RX | D2 | Communication via the serial interface. |
| GSM TX | D3 | Communication via the serial interface. |
| PWRKEY | D7 | Control of the supply voltage of system GSM (On/Off). |
| STATUS | D5 | The statuspin. |
| RESET | D6 | GSM system's reset. |
|
ARD-RESET |
RST | Led out RESET of the Arduino. |
|
5V |
5V | The supply voltage of 5 V. |
|
Vin |
Vin | The input voltage Vin. |
| GND | GND | The groundof the system |
|
Examples of projects for Arduino: |
Connect to the Raspberry Pi
To launch a 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 | Control of the supply voltage of system GSM (On/Off). |
| STATUS | 12 | The statuspin. |
| RESET | 18 | GSM system reset. |
|
5V |
02/04 | The supply voltage of 5 V. |
| GND | 06/14 | The groundof the system |
|
Example of programs for the Raspberry Pi: |
Useful links |
