Now that we know how to achieve basic telephony with the Arduino and a GSM module sketch, just imagine all the marvelous things that you can start making. Let us explore an exciting project idea using a basic GSM module.
In this section, we will put together the idea of an advanced standalone device for building an early warning system for wild forest fires. Getting notified of a forest fire in time can save many precious lives and natural resources:
Figure 2: Early warning system for forest fires
As depicted in the preceding figure, a standalone device composed of the following units when strategically ...
