Katamavak
9PCS Gas Detection Sensor Modules Kit
9PCS Gas Detection Sensor Modules Kit
Regular price
$24.95 USD
Regular price
$26.99 USD
Sale price
$24.95 USD
Unit price
per
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9PCS Gas Detection Sensor Modules
These gas and smoke sensors are widely used by hobbyists. There is a sample program at the end, but many programs are available for different microprocessors.
Due to shipping costs, we are only offering a kit. For a minimum order of 10, we can mix and match the sensors. The air quality and CO sensors are a little more expensive.
Features:
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Using a high-quality dual-panel design, with power indicator and TTL signal output instructions.
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The switching signal has a DO (TTL) output and analog output AO.
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TTL output valid signal is low. ( Low-level signal when the output light can be directly connected to the microcontroller or relay module )
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Analog output voltage with a higher concentration of higher voltage
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There are four screw holes for easy positioning.
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Has a long life and reliable stability
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Rapid response and recovery characteristic
Input voltage : DC5V Power consumption ( current ): 150mA
DO output: TTL digital 0 and 1 ( 0.1 and 5V)
AO output: 0.1 - 0 .3 V ( relative to pollution ), the maximum value of voltage out is about 4V
DO output: TTL digital 0 and 1 ( 0.1 and 5V)
AO output: 0.1 - 0 .3 V ( relative to pollution ), the maximum value of voltage out is about 4V
Special note: After the sensor is powered, it needs to warm up around 20S or so until the measured data is stable.
Wiring:
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VCC: positive power supply (5V)
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GND: power supply is negative
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DO: TTL switching signal output
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AO: analog signal output
NOTE:
After the sensor is powered, it needs to warm about 20S, measured data becomes stable.
Brand Name: EQV
Usage: Gas Sensor
Type: Gas Sensor
Output: Analog Sensor
Model Number: MQ Module
Material: Polymer
Test program:
Function: This version of the test program supporting
Use chip: AT89S52
Crystal: 11.0592MHZ
Baud rate: 9600
Compiler Environment: Keil
[Statement] This procedure is used only for study and reference, please indicate the copyright and author information!
************************************************** ******************* /
/ ************************************************* *******************
Note: 1, when the measured concentration is greater than the set density, single-chip IO port output low
************************************************** ******************* /
# Include // library files
#define uchar unsigned char // macro definition unsigned char
#define uint unsigned int // macro definition unsigned int
/ ************************************************* *******************
I / O definitions
************************************************** ******************* /
sbit LED = P1 ^ 0; // define microcontroller P1 port of the first one (ie P1.0) to indicate the end
sbit DOUT = P2 ^ 0; // define the microcontroller P2 port first one (ie P2.0) as an input sensor
/ ************************************************* *******************
Delay function
************************************************** ******************* /
void delay () // delay procedure
{
uchar m, n, s;
for (m = 20; m> 0; m--)
for (n = 20; n> 0; n--)
for (s = 248; s> 0; s--);
}
/ ************************************************* *******************
The main function
************************************************** ******************* /
void main ()
{
while (1) // infinite loop
{
LED = 1; // off P1.0 port lights
if (DOUT == 0) // When the concentration is higher than the set value, the implementation of the Con
{
delay (); // delay interference
When if (DOUT == 0) // determine the concentration higher than the set value, the implementation of the Con
{
LED = 0; // P1.0 port lights lit
}
}
}
}
/ ************************************************* *******************
End
************************************************** ****************** /









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