Terminal Velocity

Unhook the O-ring between the Turn Table and the pot before running this.

// Boolean values
#define TRUE 1
#define FALSE 0

// Hardware Pin Information
#define PHOTO_PIN 1
#define BUTTON 5
#define M1_PWM 3
#define M1_DIR 12

// Variables
#define PHOTO_THRESHOLD 100
boolean foundCargo, atCargo, startCheck;
unsigned long cargoCounter;

// Timer Variables
unsigned long startTime, stopTime;
double runTime;

void setup(){
// Initialization and Setup
Serial.begin(115200);

pinMode (M1_PWM,OUTPUT); digitalWrite (M1_PWM,LOW);
pinMode (M1_DIR,OUTPUT); digitalWrite (M1_DIR,LOW);

analogWrite (M1_PWM, 0);

// Start of Code
Serial.println("Please press the General Button to start accelerating the Turn Table");
Serial.println();

// Pause until Button Press
while(analogRead(BUTTON) != 0) {delay (10);}

Serial.println("Please wait a while until the Turn Table has visually reached Terminal Velocity!");
Serial.println();

// Ramp up the Turn Table speed a bit
RampMotor();

}

void loop() {
// Initialize the variables
foundCargo = FALSE;
atCargo = FALSE;
startCheck = FALSE;
cargoCounter = 0;

  Serial.println("When ready, please press the General Button to start recording data, the test will run for 15 seconds.");

// Pause until Button Press
while (analogRead(BUTTON) != 0) {delay (10);}

// Run until we see the first cargo and pass it
while (!startCheck) {
    // Check Photo-sensor
    foundCargo = PhotoCheck();

    // Condition Check
    if (foundCargo && !atCargo) {
      atCargo = TRUE;
    }
    if (!foundCargo && atCargo) {
      atCargo = FALSE;
      startCheck = TRUE;
    }
}

//   Start recording data
startTime = millis();
stopTime = startTime;

while ( (stopTime-startTime) < 15000 ) {
    // Check Photo-sensor
    foundCargo = PhotoCheck();

    // Condition Check
    if (foundCargo && !atCargo) {
      atCargo = TRUE;
      cargoCounter++;
    }
    if (!foundCargo && atCargo) {
      atCargo = FALSE;
    }

    stopTime = millis();
}

runTime = stopTime-startTime;
runTime = runTime/1000;

Serial.println("Test Done");
Serial.print("Time (sec): ");
Serial.println(runTime,3);
Serial.print("Counter: ");
Serial.println(cargoCounter,DEC);
Serial.print("RPM: ");
Serial.println(60 * cargoCounter / runTime , 3);
}

// Check Photo-sensor
boolean PhotoCheck() {
if (analogRead(PHOTO_PIN) > PHOTO_THRESHOLD) {
    return TRUE;
}
else {
    return FALSE;
}
}

// Ramp up the motor
void RampMotor() {
digitalWrite(M1_DIR,HIGH);
analogWrite(M1_PWM,abs(100));
delay(1000);

analogWrite(M1_PWM,abs(200));
delay(1000);

analogWrite(M1_PWM,abs(255));
}

Comments