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

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3.1 Methodology of the Project 20
3.2 Block Circuit Diagram 21
3.3 Experiment Diagram of the Project 22
3.4 Circuit Diagram for Gas Detector 22
3.5 MQ3 and MQ6 image 23
3.6 Gas Sensor Circuit Diagram 24
3.7 The Gas Sensor Connection to Arduino Pins. 25
3.8 Output Circuit Diagram 26
3.9 Relay Connection Circuit Diagram 27
3.10 Zigbee Output Connection Circuit 28
3.11 Voltage Output of Gas Sensor Versus
Reading of Bits in Arduino.
3.12 Resistance Ratio versus Concentration Gas
for MQ9
3.13 Flow chart for the Arduino Programming for
MQ9
30
32
36
3.14 Arduino input and output port initialization 37
3.15 Declaration of the pin 38
3.16 Programming process in Arduino 40
3.17 Zigbee receiver Connection to USB Port 40
3.18 Test the COM Of Each Zigbee 41