У вашего броузера проблема в совместимости с HTML5
Self balancing robot with arduino and stepper motors.
Controled by bluetooth joystick. Sigeme en https://elchals.wordpress.com/?p=283&preview=true
Make with arduino uno , stepper motors , pololu drivers ,bluetooth hc-05 and mpu6050.
If you want the code it's here https://github.com/elchals/Manolo-self-balancig-robot-by-ElChals/tree/master