diff --git a/__pycache__/particle.cpython-312.pyc b/__pycache__/particle.cpython-312.pyc
index 0ae1397..1d3958a 100644
Binary files a/__pycache__/particle.cpython-312.pyc and b/__pycache__/particle.cpython-312.pyc differ
diff --git a/__pycache__/sensor.cpython-312.pyc b/__pycache__/sensor.cpython-312.pyc
index 2381858..12b1d87 100644
Binary files a/__pycache__/sensor.cpython-312.pyc and b/__pycache__/sensor.cpython-312.pyc differ
diff --git a/__pycache__/slider.cpython-312.pyc b/__pycache__/slider.cpython-312.pyc
index dad744a..e18680e 100644
Binary files a/__pycache__/slider.cpython-312.pyc and b/__pycache__/slider.cpython-312.pyc differ
diff --git a/slider.py b/slider.py
index 304e27d..f893525 100644
--- a/slider.py
+++ b/slider.py
@@ -7,29 +7,30 @@ RED = (255, 0, 0)
 
 class Slider:
 
-    def __init__(self, x, y, w, h, min_val, max_val, initial_val):
-        self.rect = pygame.Rect(x, y, w, h)
-        self.min_val = min_val
-        self.max_val = max_val
-        self.value = initial_val
+  def __init__(self, x, y, w, h, min_val, max_val, initial_val):
+    self.rect = pygame.Rect(x, y, w, h)
+    self.min_val = min_val
+    self.max_val = max_val
+    self.value = initial_val
+    self.grabbed = False
+
+  def draw(self, screen):
+    # Draw the background
+    pygame.draw.rect(screen, GRAY, self.rect)
+    # Draw the handle (circle)
+    handle_x = self.rect.x + (self.value - self.min_val) / (self.max_val - self.min_val) * self.rect.width
+    pygame.draw.circle(screen, RED, (int(handle_x), self.rect.centery), self.rect.height // 2)
+
+  def handle_event(self, event):
+    print("hi")
+    if event.type == pygame.MOUSEBUTTONDOWN:
+      if self.rect.collidepoint(event.pos):
+        self.grabbed = True
+      elif event.type == pygame.MOUSEBUTTONUP:
         self.grabbed = False
-
-    def draw(self, screen):
-        # Draw the background
-        pygame.draw.rect(screen, GRAY, self.rect)
-        # Draw the handle (circle)
-        handle_x = self.rect.x + (self.value - self.min_val) / (self.max_val - self.min_val) * self.rect.width
-        pygame.draw.circle(screen, RED, (int(handle_x), self.rect.centery), self.rect.height // 2)
-
-    def handle_event(self, event):
-        if event.type == pygame.MOUSEBUTTONDOWN:
-            if self.rect.collidepoint(event.pos):
-                self.grabbed = True
-        elif event.type == pygame.MOUSEBUTTONUP:
-            self.grabbed = False
-        elif event.type == pygame.MOUSEMOTION:
-            if self.grabbed:
-                mouse_x = event.pos[0]
-                # Constrain the handle within the slider
-                new_value = (mouse_x - self.rect.x) / self.rect.width * (self.max_val - self.min_val) + self.min_val
-                self.value = max(self.min_val, min(self.max_val, new_value))
+      elif event.type == pygame.MOUSEMOTION:
+        if self.grabbed:
+          mouse_x = event.pos[0]
+          # Constrain the handle within the slider
+          new_value = (mouse_x - self.rect.x) / self.rect.width * (self.max_val - self.min_val) + self.min_val
+          self.value = max(self.min_val, min(self.max_val, new_value))
diff --git a/test2.py b/test2.py
index f295ffa..fd151fb 100644
--- a/test2.py
+++ b/test2.py
@@ -1,12 +1,17 @@
 import pygame
 import sys
 import math
+from sensor import Sensor
+from particle import Particle
+from slider import Slider
 
 SCREEN_WIDTH = 1352
 SCREEN_HEIGHT = 878
 
 scale = 1 * pow(10, -8)
 
+sensor = Sensor((50*pow(10, -9)) / scale, (200 * pow(10,-9)) / scale, (300 * pow(10, -9)) / scale)
+
 pygame.init()
 pygame.display.set_caption("CytoSim")
 
@@ -20,16 +25,25 @@ while True:
       sys.exit()
     if event.type == pygame.VIDEORESIZE:
       screen = pygame.display.set_mode((event.w, event.h), pygame.RESIZABLE)
+    if event.type == pygame.MOUSEWHEEL:
+      print("SCROLL")
+      if event.y == 1:
+        scale = scale / 1.1
+      elif event.y == -1:
+        scale = scale * 1.1
 
   x, y = screen.get_size()
 
-  screen.fill((0,0,105))
+  screen.fill((200,100,5))
+
+  sensor.generate(x, y, screen)
 
   pygame.draw.circle(screen, (150,255,10), (x / 2, y /2), 3 * pow(10, -6) / scale)
 
   pygame.draw.line(screen, (255,255,255), (x - (x * .1), y - (y * .1)), ((x - (x * .1)) - (1 * pow(10, -6) / scale), y - (y * .1)))
 
-  print((1 *pow(10, -6)) / scale)
+  print(scale)
+  #print((1 *pow(10, -6)) / scale)
 
   pygame.display.update()