SIM800 Expansion Board with GSM/GPRS SMS Function for Raspberry PI

Description

What it is

The SIM800 Shield is a GSM/GPRS module that allows a platform like the Raspberry Pi to send SMS and connect to the network. This expansion board enables Raspberry Pi-based projects to have mobile communication features.

Features

• Expansion board for Raspberry PI
• SMS function and GSM/GPRS connection

What it is for

Ideal for home automation or remote monitoring projects. You can use it to create an alarm system that sends SMS when triggered, or to monitor doors or windows.

Tutorial: How to use SIM800 Board for Raspberry Pi

The SIM800 board is a GSM/GPRS module that allows a platform like the Raspberry Pi to send SMS and connect to the network. Ideal for home automation or remote monitoring projects.

What you need

• Raspberry Pi
• Working SIM card with GPRS/SMS data
• USB/UART connection

Steps

1. Connect the SIM800 shield to the Raspberry Pi via UART connector or USB-TTL
2. Check that the module is properly powered (5V)
3. Install the necessary drivers for communication with the module
4. Configure the IP and network settings of the Raspberry Pi
5. Test the GSM/GPRS connection by sending an SMS from the Raspberry Pi
6. Verify that the module responds correctly to AT commands
7. Install any specific libraries needed to manage the SIM800 module
8. Try creating a simple application that sends automatic SMS

Example code

# Esempio di script Python
import serial
ser = serial.Serial('/dev/ttyUSB0', 9600, timeout=1)
ser.write(b'AT+CMGF=1rn')
time.sleep(1)
ser.write(b'AT+CMGS="555-1234"rn')
time.sleep(1)
ser.write('Hello World!rx1A'.encode())

Mini project

Create an alarm system that sends SMS when triggered. Use the Raspberry Pi and the SIM800 shield to monitor a door or a window.

Common mistakes

• Power supply issues for the module
• Incorrect serial communication configuration
• Missing installation of necessary libraries

Recommended accessories

• Portable battery for Raspberry Pi
• USB-TTL socket from UART to USB
• Separate GSM/GPRS antenna
• micro-USB power cable

Frequently asked questions

How can I check the battery level of the module?
Check the battery level through specific AT commands in the datasheet

What is the difference between GSM and GPRS?
GSM focuses on voice calls, while GPRS allows for fast data connections