Measuring blood glucose non-invasively can be a challenging task, as it requires sensors that can accurately detect glucose levels without penetrating the skin. There are several types of non-invasive glucose sensors available, but their accuracy may vary based on the technology used.
CODE ONE
int IRpin = A0; // analog pin for IR sensor
float glucoseLevel; // variable to store glucose level
void setup() {
Serial.begin(9600); // initialize serial communication
}
void loop() {
int sensorValue = analogRead(IRpin); // read analog value from IR sensor
glucoseLevel = convertToGlucose(sensorValue); // convert analog value to glucose level
Serial.print("Glucose level: ");
Serial.print(glucoseLevel);
Serial.println(" mg/dL");
delay(1000); // wait for 1 second before taking another reading
}
float convertToGlucose(int sensorValue) {
// conversion formula obtained through calibration
float glucoseLevel = 10.12 * pow(sensorValue, -0.422);
return glucoseLevel;
}
Here's an example code to get you started:
cpp#include <Wire.h>
#include <SparkFun_AS7265x.h>
AS7265x spectral;
void setup() {
Serial.begin(9600);
while(!Serial);
Wire.begin();
spectral.begin();
Serial.println("AS7265x Triad Spectroscopy Sensor initialized");
}
void loop() {
spectral.takeMeasurements();
Serial.print("Violet: ");
Serial.print(spectral.getViolet());
Serial.print("\t Blue: ");
Serial.print(spectral.getBlue());
Serial.print("\t Green: ");
Serial.print(spectral.getGreen());
Serial.print("\t Yellow: ");
Serial.print(spectral.getYellow());
Serial.print("\t Orange: ");
Serial.print(spectral.getOrange());
Serial.print("\t Red: ");
Serial.println(spectral.getRed());
delay(1000);
}
CODE TWO
const int irLED = 13; //IR LED pin
const int irSensor = A0; //IR sensor pin
void setup()
{
Serial.begin(9600);
pinMode(irLED, OUTPUT);
}
void loop()
{
int irValue = analogRead(irSensor); //read IR sensor value
digitalWrite(irLED, HIGH); //turn on IR LED
delay(10); //wait for LED to stabilize
irValue = analogRead(irSensor); //read IR sensor value again
digitalWrite(irLED, LOW); //turn off IR LED
//calculate blood glucose level
float glucoseLevel = 100 - ((irValue / 1024.0) * 100);
Serial.print("IR sensor value: ");
Serial.print(irValue);
Serial.print(", Glucose level: ");
Serial.print(glucoseLevel);
Serial.println(" mg/dL");
delay(1000); //wait 1 second before taking another measurement
}