GRBL CNC Controller

GRBL CNC Controller

kerry·FREE
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Screenshots

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Description

Take full control of your GRBL CNC with GRBL CNC Controller!

Connect your Android device directly to your Arduino-based GRBL CNC machine via USB OTG for an intuitive and portable control experience. GRBL CNC Controller puts all essential functions at your fingertips on a clean, user-friendly interface.

Key Features (as seen in your interface):

Direct USB OTG Connection: Easily connect with selectable baud rate.
Real-Time Work Position (WPos): Instantly view X, Y, Z machine coordinates.
Set Work Zero: Dedicated X0, Y0, Z0 buttons and "Go XY/Z Zero" commands.
Essential Machine Controls: Access Reset, Unlock, and Home functions.
Intuitive Jogging: XY jog pad, Z-axis buttons, and adjustable jog step/speed.
Spindle Control: Toggle spindle ON/OFF and set spindle speed.
GRBL Terminal Access ("Term"): Send custom commands and view GRBL responses.
G-Code Management: Open .nc/.gcode files, Play/Stop jobs, and see file status.
Live Feedrate Override: Adjust job speed (+/-10%) on the fly.

Why GRBL CNC Controller?

Streamlined Interface: All primary controls on one screen for efficient operation.
USB OTG Simplicity: Plug-and-play connection, no complex network setup.
Core CNC Functionality: Covers all essentials for daily CNC tasks.
Portable & Convenient: Control your machine without being tied to a PC.
Ideal for:
DIY CNC Router, Mill, or Laser users with GRBL/Arduino setups.
Hobbyists and makers seeking a straightforward mobile controller.

Requirements:

GRBL-flashed CNC machine (Arduino or compatible).
Android device with USB OTG support.
USB OTG adapter/cable.
Download GRBL CNC Controller today and simplify your CNC workflow!

Developer

kerry

Developer ID: 4800549240238018694

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Recent Reviews

Thomas Newman

I don't know why people rate this 1 star. It does exactly what it says on the label. The ads that people complain of is literally just the developer asking to upgrade. And it is thoughtful enough not to interrupt you while running the spindle, for example. People just want free stuff these days. Works flawlessly, only gripe is the manual ability to control the spindle speed is missing. But you can use commands for now alternatively.

Aug 19, 2026

Lateforwork

v4.2

cannot get it to work keep saying cannot load ad please come back later.

Mar 5, 2026

Bruce Shearer

v4.2

This tool doesn't work. When I try to connect to my machine it just tells me "still loading ads, try again later". I'm not going to buy the paid version if I can't verify the free version works.

Jan 31, 2026

Brian Girnus

does not work at all.. claim to be trying to load an add but never does and just waites until you get frustrated enough to try the premium version that's most likely also a scam.

Jan 4, 2026

Dziugas Dzikaras

v4.2

whatch ad to control. ad never loads garbage

Dec 21, 2025

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