Hall Effect Sensor Display

Projects Programming
1

To Whom It May Concern,

Currently I am trying to create a code to display linear displacement measurements of a electromagnetic piston with the hall effect sensor in real time on a graph. This is the code we have so far. I am not entirely sure whether I am taking the right approach. Any insight would be greatly appreciated.

Thank You!

int TOMILLIGAUSS = 977;
int NOFIELD = 507;

const unsigned long hallInterval = 200;

unsigned long hallTimer = 0;

void setup() {
hallTimer = millis();
Serial.begin(9600);

}

void DoMeasurement()
{

//*********************** measure magnetic field of hall effect sensor 1***************************
int raw1 = analogRead(0); // Range : 0..1024

// Uncomment this to get a raw reading for calibration of no-field point
//Serial.print("Raw reading: ");
//Serial.println(raw);

long compensated1 = raw1 - NOFIELD; // adjust relative to no applied field
long gauss1 = compensated1 * TOMILLIGAUSS; // 1000; // adjust scale to Gauss

//Serial.print("1 = ");
Serial.println(raw1);
//Serial.println(" milliGauss ");
//Hall effect sensor 2**

int raw2 = analogRead(1);

long compensated2 = raw2 - NOFIELD; // adjust relative to no applied field
long gauss2 = compensated2 * TOMILLIGAUSS; // 1000; // adjust scale to Gauss

//Serial.print("2 = ");
Serial.println(raw2);
//Serial.println(" milliGauss ");
//***Hall effect sensor 3

int raw3 = analogRead(2);

long compensated3 = raw3 - NOFIELD; // adjust relative to no applied field
long gauss3 = compensated3 * TOMILLIGAUSS; // 1000; // adjust scale to Gauss

//Serial.print("3 = ");
Serial.println(raw3);
//Serial.println(" milliGauss ");

}

void loop() {
if( (millis() - hallTimer) >= hallInterval) {
DoMeasurement();
hallTimer = millis();
}
}

2

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3

The code you posted has a bunch of useless stuff happening in DoMeasurement(). What do you want to graph? Where?