motor test

src/schrittmotor.py

@@ -25,6 +25,10 @@ class motor():
         self.freq = freq
         self.freq_halten = freq_halten
         self.cyc_halten = cyc_halten
+        self.pwm1 = 0
+        self.pwm2 = 0
+        self.pwm3 = 0
+        self.pwm4 = 0
 
     def start(self):
         GPIO.setup(self.sp1, GPIO.OUT)