GitHub - bobboteck/JoyStick: A simple JoyStick that use HTML5, Canvas and Vanilla JavaScript, for touch and mouse interfaces (no JQuery required), preview at:
Touch-enabled Virtual Joystick In Vanilla JavaScript | CSS Script
Virtual JoyStick getting a degrees - Help & Support - PlayCanvas Discussion
WIFI VIRTUAL JOYSTICK TO INSERT IN ARDUINO CODE TO CONTROL ANY DEVICE | Elektor Magazine