-Building prototype hand tracking prototype based on Arduino and Unity it can track a hand movement from the capacity effect from a hand and induction from the surface of the hand and it can connected to Unity via serial TTL or Bluetooth.-Designing hardware and model 3d of arm robot controlled by mixed reality, designing 3d by Solidworks and converting it to unity asset as digital twins use an esp32-s3 as the controller can make it capable running by a Bluetooth or wifi.