Reaction Time Game ][

/***********************************************
 *     Reaction Time Game For Arduino Nano     *
 *                       by                    *
 *                learnelectronics             *
 *                                             *
 *        www.youtube.com/learnelectronics     *
 *        email: [email protected]         *
 *                                             *
 ***********************************************/




#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define OLED_RESET 4
Adafruit_SSD1306 display(OLED_RESET);

const int ledPin = 5;   // LED connected to digital pin 5
const int switchPin = 8;  // Switch connected to digital pin 8
const int minDelay = 1000;  // Minimum delay before LED turns green (in milliseconds)
const int maxDelay = 5000;  // Maximum delay before LED turns green (in milliseconds)

void setup() {
  pinMode(ledPin, OUTPUT);
  pinMode(switchPin, INPUT_PULLUP);

  Serial.begin(9600);

  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  display.display();
  delay(500);
  display.clearDisplay();

  // Seed the random number generator
  randomSeed(analogRead(0));

  // Wait for a moment before starting
  delay(2000);
}

void loop() {
  // Generate a random delay before the LED turns green
  int delayTime = random(minDelay, maxDelay);
  delay(delayTime);

  // Turn on the LED (green)
  digitalWrite(ledPin, HIGH);

  // Wait for the player to press the switch
  unsigned long startTime = millis();
  while (digitalRead(switchPin) == HIGH) {
    // Wait for the switch to be pressed
  }
  unsigned long endTime = millis();

  // Turn off the LED
  digitalWrite(ledPin, LOW);

  // Calculate and display the reaction time
  unsigned long reactionTime = endTime - startTime;
  Serial.print("Reaction Time: ");
  Serial.print(reactionTime);
  Serial.println(" ms");

  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setCursor(0,0);
  display.clearDisplay();
  display.println("Reaction");
  display.print("Time: ");
  display.print(reactionTime);
  display.println("ms");
  display.display();

  // Wait for a moment before the next round
  delay(2000);

  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setCursor(0,0);
  display.clearDisplay();
  display.println("Get Ready!");

  display.display();
  delay(1000);
  display.clearDisplay();

}