created first draft of wheel class

src/wheel.py

@@ -5,13 +5,24 @@ class Wheel:
     def __init__(self, port):
         self._motor = ev3.LargeMotor(port)
         self._motor.stop_action = 'brake'
-        self._speed = 50
+        self._speed = 20
+        self._motor.duty_cycle_sp = self._speed
 
     def run(self):
-        pass
+        self._motor.run_direct()
 
     def stop(self):
-        pass
+        self._motor.stop()
 
-    def speed_set(self):
-        pass
+    def speed_set(self, newspeed):
+        self._speed = newspeed
+        self._motor.duty_cycle_sp = self._speed
+
+    def speed_mod(self, modifier):
+        self._speed = self._speed + modifier
+        self._motor.duty_cycle_sp = self._speed
+
+    def getmovement(self):
+        self.position = self._motor.position
+        self._motor.position.reset()
+        return self.position