wireless monitoring system of gas detector - Faculty of Electrical ...

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place as the float sensor declare in line 6 below. Analog input pin that the potentiometer
of gas sensor is attached to pin A0. The declaration programming for this step shows as
Figure 3.14.
constintanalogInPin = A0;
constintledred = 13;
constintledgreen = 12;
constintledyellow = 11;
intsensorValue = 0;
float sensor;
figure 3.14: Arduino input and output port initialization
After that, loop is very important which represent all the data will continuously
repeat by time. In this project, there are 2 loop include. First loop is to initialize serial
communication at the bound rate 9600. This is also sets the digital pin as the output as
shown in Figure 3.15.