У вашего броузера проблема в совместимости с HTML5
This is a simple install video for RAMP 1.4 Mechanical Filament Sensor
One Time Tips, You Can PayPal Me:
https://www.paypal.me/EBraiman
Required Hardware:
arduino MEGA 2560
RAMPS 1.4
REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER
or
REPRAP_DISCOUNT_SMART_CONTROLLER
Mechanical Endstop
Required Software:
Arduino studios 1.8.2 or higher
https://www.arduino.cc/
Pronterface.exe
http://www.pronterface.com/
MarlinFW (Firmware 1.1.6)
http://marlinfw.org/meta/download/
Thiniverse STL:
https://www.thingiverse.com/thing:2654448