static public async Task Down(int cm)
 {
     await Comm.SendCommand($"down {cm}");
 }
 static public async Task Up(int cm)
 {
     await Comm.SendCommand($"up {cm}");
 }
 static public async Task Back(int cm)
 {
     await Comm.SendCommand($"back {cm}");
 }
 static public async Task Forward(int cm)
 {
     await Comm.SendCommand($"forward {cm}");
 }
 static public async Task Right(int cm)
 {
     await Comm.SendCommand($"right {cm}");
 }
 static public async Task Left(int cm)
 {
     await Comm.SendCommand($"left {cm}");
 }