diff --git a/ctdo.png b/ctdo.png
index 3a98812..3b12e1c 100644
Binary files a/ctdo.png and b/ctdo.png differ
diff --git a/eh18-image.py b/eh18-image.py
index f311bdb..6432f1c 100644
--- a/eh18-image.py
+++ b/eh18-image.py
@@ -33,7 +33,7 @@ def randomnumber(pseed,pmin,pmax,v1,v2,v3):
 newseed=(int)(time.time()/60)
 seed=newseed
 
-parts=4 #n users
+parts=2 #n users
 user=1 #1..n
 
 if __name__ == '__main__':
@@ -60,8 +60,8 @@ if __name__ == '__main__':
 
         #xv=random.randint(width/2,flutwidth-width/2)
         #yv=random.randint(height/2,flutheight-height/2)
-        xv=randomnumber(seed,width/2,flutwidth-width/2, 1234,-242,4)
-        yv=randomnumber(seed,height/2,flutheight-height/2, 1423,-122,3)
+        xv=randomnumber(seed,width/2,flutwidth-width/2, 42,-24,4)
+        yv=randomnumber(seed,height/2,flutheight-height/2, 43,-23,3)
         print("xv="+str(xv)+ "yv="+str(yv))
         _current_command=""
 
@@ -72,12 +72,13 @@ if __name__ == '__main__':
 
         for i,j in pixelcoords:
             r, g, b,a = rgb_im.getpixel((i, j))
-            if a!=255:
+            if a<=127:
                 continue
             #if r>127:
             #    continue #skip bright pixels
             #r=255-r
 
+
             #_current_command+='PX %d %d %02x%02x%02x\n' % (i+xv,j+yv,r,g,b) #rgb
             _current_command+='PX %d %d %02x\n' % (i+xv-width/2,j+yv-height/2,r) #monochrome only red channel
             if len(_current_command)>=1400: