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Updated and fixed typo examples

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miguel5612
2022-03-20 12:53:36 -05:00
parent 990e6878ef
commit 07b6948f76
28 changed files with 302 additions and 302 deletions
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26
examples/MQ-309A/MQ-309.ino
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@ -15,7 +15,7 @@
Wiring:
https://github.com/miguel5612/MQSensorsLib_Docs/blob/master/static/img/MQ_Arduino.PNG
Please take care, arduino A0 pin represent the analog input configured on #define pin
Please make sure arduino A0 pin represents the analog input configured on #define pin
This example code is in the public domain.
@ -44,7 +44,7 @@ void setup() {
//Set math model to calculate the PPM concentration and the value of constants
MQ309.setRegressionMethod(1); //_PPM = a*ratio^b
MQ309.setA(1000000); MQ309.setB(-4.01); // Configurate the ecuation values to get CO concentration
MQ309.setA(1000000); MQ309.setB(-4.01); // Configure the equation to calculate CO concentration value
/*
Exponential regression:
@ -65,24 +65,24 @@ void setup() {
*/
/***************************** MQ CAlibration ********************************************/
// Explanation:
// In this routine the sensor will measure the resistance of the sensor supposing before was pre-heated
// and now is on clean air (Calibration conditions), and it will setup R0 value.
// We recomend execute this routine only on setup or on the laboratory and save on the eeprom of your arduino
// This routine not need to execute to every restart, you can load your R0 if you know the value
// In this routine the sensor will measure the resistance of the sensor supposedly before being pre-heated
// and on clean air (Calibration conditions), setting up R0 value.
// We recomend executing this routine only on setup in laboratory conditions.
// This routine does not need to be executed on each restart, you can load your R0 value from eeprom.
// Acknowledgements: https://jayconsystems.com/blog/understanding-a-gas-sensor
Serial.print("Calibrating please wait.");
float calcR0 = 0;
for(int i = 1; i<=10; i ++)
{
MQ309.update(); // Update data, the arduino will be read the voltage on the analog pin
MQ309.update(); // Update data, the arduino will read the voltage from the analog pin
calcR0 += MQ309.calibrate(RatioMQ309CleanAir);
Serial.print(".");
}
MQ309.setR0(calcR0/10);
Serial.println(" done!.");
if(isinf(calcR0)) {Serial.println("Warning: Conection issue founded, R0 is infite (Open circuit detected) please check your wiring and supply"); while(1);}
if(calcR0 == 0){Serial.println("Warning: Conection issue founded, R0 is zero (Analog pin with short circuit to ground) please check your wiring and supply"); while(1);}
if(isinf(calcR0)) {Serial.println("Warning: Conection issue, R0 is infinite (Open circuit detected) please check your wiring and supply"); while(1);}
if(calcR0 == 0){Serial.println("Warning: Conection issue found, R0 is zero (Analog pin shorts to ground) please check your wiring and supply"); while(1);}
/***************************** MQ CAlibration ********************************************/
MQ309.serialDebug(true);
}
@ -94,8 +94,8 @@ void loop() {
{
// VH 0.9 Volts
analogWrite(5, 2); // 255 is 100%, 2.295 is aprox 0.9% of Duty cycle for 60s
MQ309.update(); // Update data, the arduino will be read the voltage on the analog pin
MQ309.readSensor(); // Sensor will read PPM concentration using the model and a and b values setted before or in the setup
MQ309.update(); // Update data, the arduino will read the voltage from the analog pin
MQ309.readSensor(); // Sensor will read PPM concentration using the model, a and b values set previously or from the setup
MQ309.serialDebug(); // Will print the table on the serial port
delay(500); //Sampling frequency
}
@ -106,8 +106,8 @@ void loop() {
{
// VL 0.2 Volts
analogWrite(5, 1); // 255 is 100%, 0.51 is aprox 0.2% of Duty cycle for 120s
MQ309.update(); // Update data, the arduino will be read the voltage on the analog pin
MQ309.readSensor(); // Sensor will read PPM concentration using the model and a and b values setted before or in the setup
MQ309.update(); // Update data, the arduino will read the voltage from the analog pin
MQ309.readSensor(); // Sensor will read PPM concentration using the model, a and b values set previously or from the setup
MQ309.serialDebug(); // Will print the table on the serial port
delay(500); //Sampling frequency
}