remove abs() in send command

src/hoverserial.ino

@@ -311,7 +311,7 @@ void loop(void)
     if (iTimeSend > timeNow)
         return;
     iTimeSend = timeNow + TIME_SEND;
-    Send(0, abs(cmd2));
+    Send(0, cmd2);
 
 
     display.setCursor(0, 30);