diff --git a/client_sw/matrixSender.py b/client_sw/matrixSender.py
index 8ad4689..d355440 100644
--- a/client_sw/matrixSender.py
+++ b/client_sw/matrixSender.py
@@ -18,7 +18,6 @@ class MatrixSender(object):
     global threadrunning
     threadrunning=False
 
-
     def __init__(self, udphost, udpport, img_size=(160,48), bitsperpixel=1):
 
         self._udphost = udphost
@@ -31,58 +30,21 @@ class MatrixSender(object):
 
         self._sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
 
-
-
-    def _list2byte(self, l):
-        byte = 0
-        i = 0
-        for i in range(8):
-            byte += 2**(7-i) if l[i] else 0
-        return byte
-
-    def _array2packet(self, a):
-        return [self._list2byte(a[i*8:i*8+8]) for i in range(int(len(a)/8))]
-
-    def _intToBitlist(self,number): #convert integer number to list of bits, exampe: 1-> [0,1], 2->[1,0]
-        bitlistvaryinglength=[x for x in "{0:b}".format(number)]
-        bitlist=np.zeros(self.bitsperpixel,dtype=int)
-        bitlist[self.bitsperpixel-len(bitlistvaryinglength):]=bitlistvaryinglength
-        return bitlist
-
-
-    def send(self, image,invert=False): #changes slowly 'fadespeed'-pixels at a time
+    def send(self, image,invert=False):
         global threadrunning
         imgmap = []
+        sendbyte=0
+        senddata=bytearray()
+        pixelofbyte=0
         for pixel in image.getdata():
             r, g, b, a = pixel
 
             pixelbrightness=int( (r+g+b)/3 *(pow(2,self.bitsperpixel)-1) /255 +0.5)
+            sendbyte+=pixelbrightness<<(pixelofbyte*self.bitsperpixel)
+            pixelofbyte+=1
+            if pixelofbyte>=(8/self.bitsperpixel):
+                pixelofbyte=0
+                senddata.append(sendbyte)
+                sendbyte=0
 
-            if invert:
-                pixelbrightness=pow(2,self.bitsperpixel)-1-pixelbrightness
-
-            for b in self._intToBitlist(pixelbrightness):
-                imgmap.append(b)
-
-        self.sendPacket(imgmap) #send packet and save last-imagemap
-
-
-    def sendPacket(self, imgmap):
-        packet = self._array2packet(imgmap)
-        self._sock.sendto(bytes(packet), (self._udphost, self._udpport))
-
-
-    def send_bytes(self, img):
-        imgmap = []
-        for pixel in img:
-            if pixel == "1":
-                imgmap.append(1)
-            else:
-                imgmap.append(0)
-
-        if len(img) < 1280:
-            imgmap = np.hstack((imgmap, np.zeros(1280-len(img), dtype=int)))
-
-        packet = self._array2packet(imgmap)
-
-        self._sock.sendto(bytes(packet), (self._udphost, self._udpport))
+        self._sock.sendto(bytes(senddata), (self._udphost, self._udpport))
diff --git a/client_sw/matrixsimulator.py b/client_sw/matrixsimulator.py
index 0d22179..ceace7f 100644
--- a/client_sw/matrixsimulator.py
+++ b/client_sw/matrixsimulator.py
@@ -94,7 +94,7 @@ class FlipdotMatrixSimulatorWidget():
     def showFromRawData(self, rawData):
         x=0 #pixel x position
         y=0 #pixel y position
-        bitshifts=[x*self.bitsperpixel for x in reversed(range(int(8/self.bitsperpixel)))]
+        bitshifts=[x*self.bitsperpixel for x in range(int(8/self.bitsperpixel))]
         bitmask=int('00000011', 2)
 
         for cbyte in rawData:
diff --git a/client_sw/movingball_example.py b/client_sw/movingball_example.py
index ed2bff4..d5d084d 100644
--- a/client_sw/movingball_example.py
+++ b/client_sw/movingball_example.py
@@ -34,7 +34,10 @@ if __name__ == '__main__':
         #draw ball
         draw.ellipse((ball_pos[0]-ball_size/2,ball_pos[1]-ball_size/2,ball_pos[0]+ball_size/2,ball_pos[1]+ball_size/2,),fill=(255,255,255))
 
-
+        _time_startsending=time.time()
         matrix.send(im) #construct udp packet and send to matrix
+        _time_endsending=time.time()
+
+        print("Sendtime="+str(round(_time_endsending-_time_startsending,4))+"s, FPS="+str(round(1/(_time_endsending-_time_startsending),2)))
 
         time.sleep(.1) #wait