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Finflow_code.ino
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Finflow_code.ino
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// *****Final code of Finflow for Techevence 9.0*****
// Arduino Mega 2560
// AS7265 spectral triad for colour and intencity detection
// LM380 as opamp
#include "SparkFun_AS7265X.h"
AS7265X sensor;
int pin1=8; // reagent 1 pump
int pin2=9; // reagent 2 pump
int pin3=10; // water pump
float I0=19.49;
void setup() {
Serial.begin(115200);
Serial.println("AS7265x Spectral Triad Reading");
if(sensor.begin() == false)
{
Serial.println("Sensor does not appear to be connected. Please check the wiring. Freezing...");
while(1);
}
//sensor.disableIndicator(); //turning off blue indicator of spectro
//sensor.enableBulb(0); //turning on white led of spectro
//Serial.println("only 645nm red");
pinMode(pin1,OUTPUT);
pinMode(pin2,OUTPUT);
pinMode(pin3,OUTPUT);
// fan for cooling
pinMode(6,OUTPUT);
pinMode(7,OUTPUT);
digitalWrite(6,HIGH);
digitalWrite(7,LOW);
// spectro led on
pinMode(2,OUTPUT);
pinMode(3,OUTPUT);
digitalWrite(2,HIGH);
digitalWrite(3,LOW);
// pump pipe filling
analogWrite(pin1,153);
analogWrite(pin2,153);
analogWrite(pin3,153);
delay(4600);
analogWrite(pin3,0);
delay(900);
analogWrite(pin1,0);
analogWrite(pin2,0);
delay(1000);
// chemical pouring into spectro beaker
// 12ml reagent 1, 12ml reagent 2, 7ml sample water
analogWrite(pin3,135);
analogWrite(pin1,135);
analogWrite(pin2,135);
delay(30100);
analogWrite(pin3,0);
delay(24800);
analogWrite(pin1,0);
analogWrite(pin2,0);
}
void loop() {
// measurments in spectro beaker
sensor.takeMeasurements();
float I_min;
while(1){
float I1=sensor.getCalibratedJ(); //645nm red
delay(10000);
float I2=sensor.getCalibratedJ(); //645nm red
if(I2>I1){
I_min=I1;
break;
}else if(I2<I1){
continue;
}else if(I2==I1){
I1=I2;
delay(60000);
float I2=sensor.getCalibratedJ(); //645nm red
if(I1==I2){
I_min=I1;
break;
}
}
}
double ratio=I0/I_min;
double A=log10(ratio);
double C=32.895*A; //from calibration curve
Serial.println(C);
}