Use your Android phone to stream G-code to your GRBL controlled CNC machine, wirelessly using Android's on-board Bluetooth! Requires an HC-05 or HC-06 Bluetooth module to be connected to your GRBL controller.

More info here:
http://www.shapeoko.com/forum/viewtopic.php?f=3&t=7951

* Adjust feedrate, spindle speed, and toggle coolant on the fly in REAL TIME!
* Handy onboard jog pendant with adjustable jog increment!
* Supports DRO display for legacy GRBLv.9x and current GRBLv1.1x!
* No Ads or popups!
* 15 user programmable buttons!
* Stream an entire G-code file!
* Send a short text command!
* Start/Stop and resume streaming!
* Live DRO display!