If you’ve added a Bluetooth wireless module to your CNC machine, you might be thinking of using an Android tablet, or even a smartphone, to do some wireless routing or LASER cutting. If so, you may be wondering what software to choose. So I thought I’d write a short post about my favourite go-to Android app for controlling my CNC machine: G-Code2GRBL which is available on the Play Store. While I can only give my personal opinion, I find it excellent. It gives all of the functions I need in a nicely designed interface, as the screenshot below shows.
Once connected over Bluetooth to your CNC, G-Code2GRBL gives you a range of screens to choose from. The main ‘GRBL Control’ screen gives you buttons for jogging the XYZ axes (with step adjustment controls), buttons to zero XYZ positions, pause/reset buttons and a text-display of the GCode file being sent for routing/LASERing. The file to be sent can be chosen from the ‘Select files’ screen with just a few taps, which is nice. And another useful screen is the ‘Send Commands’ one. It lets you send your own one-line GCode commands for simple control, which is very handy for things like turning on a LASER (on low-power, obviously) for focussing, and turning it off again. Overall, I think it’s well worth a look if you’re after a way to control your CNC wirelessly from Android devices.