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Updated examples (Issue 26)

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miguel5612
2020-04-20 19:23:45 -05:00
parent a906388c5c
commit b9a5e62899
3 changed files with 82 additions and 10 deletions
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32
examples/MQ-309A/MQ-309.ino
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@ -31,14 +31,16 @@
#define type "MQ-309" //MQ309
#define ADC_Bit_Resolution 10 // For arduino UNO/MEGA/NANO
#define RatioMQ309CleanAir 11 //RS / R0 = 11 ppm
//#define calibration_button 13 //Pin to calibrate your sensor
#define PWMPin 5 // Pin connected to mosfet
//Declare Sensor
MQUnifiedsensor MQ309(placa, Voltage_Resolution, ADC_Bit_Resolution, pin, type);
unsigned long oldTime = 0;
void setup() {
//Init the serial port communication - to debug the library
Serial.begin(9600); //Init serial port
pinMode(PWMPin, OUTPUT);
//Set math model to calculate the PPM concentration and the value of constants
MQ309.setRegressionMethod(1); //_PPM = a*ratio^b
@ -86,8 +88,28 @@ void setup() {
}
void loop() {
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.serialDebug(); // Will print the table on the serial port
delay(500); //Sampling frequency
// 60s cycle
oldTime = millis();
while(millis() - oldTime <= (30*1000))
{
// 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.serialDebug(); // Will print the table on the serial port
delay(500); //Sampling frequency
}
// 90s cycle
oldTime = millis();
while(millis() - oldTime <= (120*1000))
{
// 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.serialDebug(); // Will print the table on the serial port
delay(500); //Sampling frequency
}
// Total: 30 + 120s = 2.5 minutes.
}