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Product description: LTE/GSM module - u-GSM shield v2.19 EG91E
Module compatible with Arduino, Raspberry Pi (version 3B+, 3B, 2B, B+ and A+) and BeagleBone Black, which enables communication in LTE / GSM CAT1 standard. It allows to make voice calls and send SMS messages. On the board there are: SIM card connector, charging module for Li-Pol / Li-Ion battery and RESET button. It has connectors for GSM u.FL antennas.
Component layout on the u-GSM shield board.
Pinouts of the LTE/GSM module - u-GSM shield
| Pin | Description |
|---|---|
| STS |
Status pinout. |
| RI | Ring Indicator output. |
| GND | System ground. |
| VCC | 4V input/output, internally connected to Li-Pol + pad. |
| VIN | 5V input for Li-Pol charger. |
| VUSB | 5V output. |
| ENA | Activation pin, activated by a high state. |
| RST | Reset, high state activated. |
| TX | Communication via serial interface. |
| RX . | Communication via serial interface. |
Connecting LTE/GSM module to Arduino
The chip works with Arduino Uno using the following pins:
| Pin | Arduino | Description |
|---|---|---|
| GSM RX | D3 | Communication via serial interface. |
| GSM TX | D2 | Communication via serial interface. |
| RESET | D6 | Reset of the GSM chip. |
| Ena | D7 | Control voltage of GSM chip (On/Off). |
| VIN (5 V LiPol) | 5 V |
5 V power supply. Details of connection in case of LiPol batteries are available in manufacturer's manual. |
|
GND |
GND | System ground. |
|
STATUS |
D5 | Status pinout. |
Connecting LTE/GSM module to Raspberry Pi
The module has special breakout connectors that allow direct plugging into the GPIO connectors of the Raspberry Pi or BeagleBone Black.
In order to run the module with Raspberry Pi the following connections need to be made:
| Pin | RPi | Description |
|---|---|---|
| GSM RX | 10 |
Communication via serial interface, (not connected for USB communication). |
| GSM TX | 08 |
Communication via serial interface (not connected when using USB). |
| RESET | 18 | GSM system reset. |
| ON / OFF | 16 | GSM system power voltage control (On/Off). |
| VIN (5 V LiPol) | 02/04 | Supply voltage 5 V. |
|
GND |
04/14 | GND of the chip. |
| STATUS | 12 | Status pinout. |
|
Detailed description of the module can be found in the user guide in parts one and two and on the manufacturer's website. |
LTE/GSM module specification - uGSM shield
- Controller: Quectel EG91E
- Supported standards: LTE / M2M CAT1
- Frequencies:
- FDD LTE: B1 / B3 / B7 / B8 / B20 / B28A
- WCDMA: B1 / B5 / B8
- GSM: B1 / B8
- Speeds:
- LTE-FDD: up to 10 Mb/s (DL) / up to 10 Mb/s (UL)
- DC-HSDPA: up to 42 Mbps (DL) / HSUPA up to 5.76 Mbps (UL)
- WCDMA: up to 384 Kbps (DL) / up to 384 Kbps (UL)
- EDGE/GPRS: up to max. 296 Kbps (DL), max. 236.8 Kbps (UL) / max. 107 Kbps (DL), max. 85.6 Kbps (UL)
- Nano SIM / micro SIM connector
- Antenna connectors u.FL
- Built-in USB-UART converter (USB connector can be used to power the module)
- Automatic selection of logic levels from 3 V to 5 V
- Reset button
- Works with Arduino, Raspberry Pi and BeagleBone Black along with manufacturer's sample codes
- Two mounting holes with diameter: 2.5mm
- Board dimensions: 45 x 27 mm
