Hacking with Sensors
Chapters 6, 7, and 8 all overlap somewhat, as many sensors are also modules and both can often be used with an Arduino.
In this chapter, we will look at how to use a range of sensors, whether with a little supporting electronics or as an input to an Arduino, or sometimes both.
How to Detect Noxious Gas
In this section, you will use a methane sensor (Figure 8-1).
FIGURE 8-1 A methane sensor
While they look like they should be expensive, these sensors are really quite low cost. They include a small heater (connected between ...