Change high and low values

pid-example/pid-example.ino

@@ -86,8 +86,8 @@ void loop() {
 }
 void forward_brake(int posa, int posb) {
   //set the appropriate values for aphase and bphase so that the robot goes straight
-  digitalWrite(aphase, LOW);
+  digitalWrite(aphase, HIGH);
-  digitalWrite(bphase, HIGH);
+  digitalWrite(bphase, LOW	);
   analogWrite(aenbl, posa);
   analogWrite(benbl, posb);
 }