diff --git a/Assignment 1/assignment_1.py b/Assignment 1/assignment_1.py
old mode 100644
new mode 100755
index 46baedf..ae6798a
--- a/Assignment 1/assignment_1.py	
+++ b/Assignment 1/assignment_1.py	
@@ -1,37 +1,44 @@
+#! /usr/bin/python
 import RPi.GPIO as GPIO
 import time
 
-PIR_pin = 3 
-LED_pin = 4
+global blinking, blink_count
 
-GPIO.setmode(GPIO.BOARD)
-GPIO.setup(LED_pin ,GPIO.OUT)  # Set up pin to emit LED
+blinking: bool = False
+led_state: bool = False
+blink_count: int = 0
+
+LED_PIN = 2
+BTN_PIN = 3 
+
+GPIO.setmode(GPIO.BCM)
 GPIO.setwarnings(False)
-GPIO.setup(PIR_pin, pull_up_down = GPIO.PUD_UP)  # Set up pin 23 pull up
+GPIO.setup(LED_PIN ,GPIO.OUT)
+GPIO.setup(BTN_PIN,GPIO.IN, pull_up_down = GPIO.PUD_UP)
 
+blinking = not GPIO.input(BTN_PIN)
 
-'''
-def PIN_pin_ISR(pressed):
-    print("Falling Edge Detected")
-'''
-
-def Blink_3_times(pressed):
-    i = 0
-    while(i<=2):
-        GPIO.output(LED_pin, GPIO_HIGH)
-        time.sleep(1)
-        GPIO.output(LED_pin, GPIO_LOW)
-        time.sleep(1)
-        print("LED Blink")
-
-GPIO.add_event_detect(PIR_PIN, GPIO.FALLING, callback = Blink_3_times, bouncetime = 300)
+def ISR_DECT_BOTH(channel: int):
+    global blinking, blink_count
+    time.sleep(0.05)
+    blinking = not GPIO.input(BTN_PIN)
+    if(blinking):
+        blink_count = 0
 
+GPIO.add_event_detect(BTN_PIN, GPIO.BOTH, callback = ISR_DECT_BOTH, bouncetime = 50)
 
 try:
     while(1):
-        print("Nothing")
+        print(blinking)
+        if(blinking):
+            if led_state == 0:
+                blink_count += 1
+            if blink_count <= 3:
+                led_state = not led_state
+        else:
+            led_state = False
+        GPIO.output(LED_PIN, led_state)
         time.sleep(1)
-
 except:
     GPIO.cleanup()
         
\ No newline at end of file