Grbl Controller (Bluetooth | USB) Use your smart phone to stream G-Code to your CNC machine with GRBL 1.1 firmware. Features: * Supports Bluetooth and USB Otg connection. * Supports Grbl 1.1 real time feed, spindle and rapid overrides. * Simple and powerful jogging control with corner jogging. * Uses buffered streaming. * Real time machine status reporting (Position, feed, spindle speed, buffer state. Buffer status report needs to enabled using the setting $10=2). * Supports Sending G-Code fil