How to Send a Temperature Emergency SMS Using Tracking Kit (GPRS + GPS)

1. Introduction Go to index

This tutorial allows the user to measure the temperature of an object. When the temperature is 0ºC or less, a text message is sent to a mobile phone in which the temperature and the position (laltitude and longitude) of the module is indicated.


    • – 1 x

How to Send a Temperature Emergency SMS Using Tracking Kit (GPRS + GPS)Tracking Kit (GPRS + GPS)

    • 1x Platform
    • 1x GPRS+GPS Quadband Module (SIM908)
    • 1x GPRS antenna
    • 1x GPS antenna
    • 1x Temperature sensor (MCP9700A)
    • 1x Breadboard
    • 1x External power supply
    • 1x Programming cable
    • Jumper Wires

Preparation Time: 30 minutes

NOTE: Depending on the platform chosen to develop the project, the ingredients and the schematics shown in this tutorial can vary.
This project can be developed with Arduino or Intel Galileo. It is also compatible with Raspberry Pi using the Raspberry Pi to Arduino shields connection bridge.

For further information about the GPRS+GPS (SIM908) Shield, consult the main tutorial.

Step 1: Connection Go to index

Connect the GPRS and GPS antenna to the shield and then, connect the shield to the Arduino or to Raspberry Pi connection bridge. Connect temperature sensor in the breadboard as you can see in the next diagram.

Connect two wires, red and black, to the two long rows on the side of the breadboard to provide access to the VCC supply (5V in Arduino and 3.3V in Raspberry Pi) and ground. Place the sensor with the flat part looking up like the diagram. Connect the left leg of the sensor to GND and the right to VCC. Connect the central leg to the first pin at bottom left of the shield (Analog 0).

WARNING: In Raspberry Pi, GPIO voltage levels are 3.3 V and are not 5 V tolerant. There is no over-voltage protection on the board. Digital inputs use a 3V3 logic level and are not tolerant of 5V levels, such as you might find on a 5V powered Arduino. Extreme caution when working with GPIO, you may damage your Raspberry Pi, your equipment and potentially yourself and others. Doing so is at your own risk!

Step 2: The Code Go to index


Raspberry Pi:


Intel Galileo:

How to Send a Temperature Emergency SMS Using Tracking Kit (GPRS + GPS) schematic

Links and Documentation Go to index

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For more detail:  How to Send a Temperature Emergency SMS Using Tracking Kit (GPRS + GPS)

About The Author

Ibrar Ayyub

I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough research and presenting information in a structured and logical format.

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