@kdaffy If you have the email with your license key, reply (send me an email) and I will help you. If not, just send me an email or contact me from my website and I will try to help https://t2laser.org/contact

@kdaffy Reply to your license key email and I will resolve it for you.

@DPE Sorry I don't know about this module, but for the probe function on Grbl you just need to close a switch between A3 and GND.

https://forum.eleksmaker.com/topic/3738/extra-module-doesn-t-work/3

@DPE The Z probe is a continuity circuit, there is no polarity.

@DPE T2Laser supports 2 or 3 axis machines, it can do full 3D engraving or 2.5D cutting. It also supports home switches, rotary mode and much more. The trial is free.

@darty The controller is running open source Grbl firmware, it's a standard G-code interpreter.

@HS-O The pins are listed on your picture, what they are used for is dependant on the firmware configuration. You can search "grbl pinout 1.1" for the defaults:

D9 = X home
D10 = Y home
D12 = Z home
A3 = probe

D11 is the laser PWM output

T2Laser Grbl 1.1e DEFAULT firmware uses D9 for both X and Y home switch to make wiring simpler, you would use 2 N.O. switches in parallel. I also provide firmware that uses the above default configuration.

@a.kusters It sounds like your Nano boot loader is corrupt or perhaps the Nano has failed. You can get a replacement for a few dollars, just make sure it has a boot loader installed or get yourself an AVR programmer and load the boot loader with Arduino IDE.

@BobbyB You don't need to reload the software but if you think it's settings just click Restore Defaults in the Help menu. If you post a picture of the result you are getting I can better understand what the issue is, it could be mechanical - like loose belts but without seeing the problem I am totally guessing in the dark.

I don't check the forums that often so for faster support just email me or contact from my website.