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miguel5612 2020-03-28 12:31:23 -05:00
parent 0e8c0b3f5f
commit 411607dd5a
1 changed files with 2 additions and 2 deletions
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examples/MQ-4-LINEAR/MQ-4-LINEAR.ino
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@ -23,7 +23,7 @@
//Definitions
#define placa "Arduino UNO"
#define Voltage_Resolution 5
#define pin A0 //Analog input 0 of your arduino
#define pin A4 //Analog input 4 of your arduino
#define type "MQ-4" //MQ4
#define ADC_Bit_Resolution 10 // For arduino UNO/MEGA/NANO
#define RatioMQ4CleanAir 4.4 //RS / R0 = 4.4 ppm
@ -83,7 +83,7 @@ void loop() {
MQ4.update(); // Update data, the arduino will be read the voltage on the analog pin
//https://jayconsystems.com/blog/understanding-a-gas-sensor
MQ4.setA(-0.318; MQ4.setB(1.133); // A -> Slope, B -> Intersect with X - Axis
MQ4.setA(-0.318); MQ4.setB(1.133); // A -> Slope, B -> Intersect with X - Axis
float LPG = MQ4.readSensor(); // Sensor will read PPM concentration using the model and a and b values setted before or in the setup
Serial.print("| "); Serial.print(LPG);