ARD30Sec.cpp

#include <Stepper.h>

const int stepsPerRevolution = 516;  // change this to fit the number of steps per revolution for your stepper motor
const int ledPin = 13;  // the pin that the trial indicator LED is attached to
const int irPin = 2;  // the pin that the IR Phototransistor is attached to
unsigned long previousTime = 0;
unsigned long trialStartTime = 0;
const unsigned long trialInterval = 30000; // 30 seconds interval between trials
const unsigned long trialDelay = 10000;    // 10 seconds delay between trials

bool startTrial = false;  // Flag to start a trial

// initialize the stepper library on pins 9 through 12:
Stepper myStepper(stepsPerRevolution, 9, 10, 11, 12);

void setup() {
  pinMode(ledPin, OUTPUT);  // initialize the LED pin as an output
  pinMode(irPin, INPUT);   // initialize the IR Phototransistor pin as an input
  Serial.begin(9600);      // initialize serial communication at 9600 bits per second
  trialStartTime = millis() + trialInterval; // Initialize the first trial start time
}

void loop() {
  unsigned long currentTime = millis();
  // read the state of the IR Phototransistor
  int irState = digitalRead(irPin);

  // Check if it's time to start a new trial
  if (currentTime >= trialStartTime) {
    startTrial = true;
    trialStartTime = currentTime + trialInterval;  // Set the next trial start time
  }

  // check if there is any incoming serial data
  if (Serial.available() > 0) {
    // read the incoming byte
    byte incomingByte = Serial.read();
    // if the incoming byte is 't', start a trial immediately
    if (incomingByte == 't') {
      startTrial = true;
    }
  }

  // Start a trial if the flag is set
  if (startTrial) {
    Serial.print("Trial started at: ");
    Serial.println(currentTime);
    digitalWrite(ledPin, HIGH);  // turn on the LED
    myStepper.setSpeed(25);  // set the speed of the stepper motor
    myStepper.step(30);  // move the stepper motor 30 degrees
    previousTime = currentTime;
    delay(500);  // wait for half a second

    // activate the camera for 30 seconds
    Serial.write("c");  // send 'c' to trigger the camera
    delay(50);  // wait for the camera to initialize
    Serial.write("r");  // send 'r' to start recording

    // Wait for 1 second before turning off the LED
    delay(1000);
    digitalWrite(ledPin, LOW); // turn off the LED

    // Reset the flag
    startTrial = false;
  }

  // You can add other code here to handle the IR Phototransistor if needed.
}