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MQ-5 Gas Detection Alarm Circuit Sound and Light Electronic Teaching Training DIY Parts Production Sensor Kit

MQ-5 Gas Detection Alarm Circuit Sound and Light Electronic Teaching Training DIY Parts Production Sensor Kit

Roymall C.o.

$1.20 /$7.31

4.4903

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Feature:

Product name: Gas detection alarm circuit

Supply voltage: DC5V

Appearance size: 60*30mm

Sensor: MQ-5

NOTE: This kit requires self-assembly.

Package includes:

1 x DIY Kit

Components List
Component name	Component position	Quantity
1/4W Resistor 5.1R	R1	1
1/4W Resistor 1K	R2, R5~R7,R9, R10	6
1/4W Resistor 10K	R3, R4	2
1/4W Resistor 330R	R8	1
1/4W resistor 220K	IC4	1
Ceramic capacitor 104	C1,C2	2
3MM yellow LED	D1, D2	2
Transistor S9012	Q1	1
Trivalent chromium S9013	Q2	1
In-line chip LM393	U1	1
Voice chip C002	IC4	1
5V Active Buzzer	B1	1
Straight pin header 4P	P1	1
Double female Dupont cable 2P	P1	1
MQ-5 gas sensor	MQ-5	1
PCB board		1

Principle:

The gas sensing material used in the MQ-5 gas sensor is tin dioxide with low conductivity in clean air. When there is flammable gas in the environment where the sensor is located, the conductivity of the sensor increases with the increase in the concentration of flammable gas in the air. big. External oscillator resistance 100K~240KΩ (the larger the resistance, the slower the sound speed), the buzzer can be driven to sound after power-on. Pin 1 is grounded, pin 2 is output, pin 3 is the sound terminal, pin 4 is connected to the positive pole of the power supply, and pins 5 and 6 are connected to the shock resistance.

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