Arduino cnc shield problem

[michalotto18]

I configured and uploaded it to an Arduino Uno with CNC Shield v3, but the control programs show the error [MSG:Settings error: $RST=* required]. Do I need to use any special software for this, or should regular GRBL work?

[Paciente8159]

Any terminal or grbl sender should allow you to send that command. You can also disable that safety feature by compiling the code with this option enabled.

[michalotto18]

There's a problem with homing. The X axis is functioning correctly, meaning the limit switch is detected and the axis moves away by the set distance. However, the Y axis throws an error after detecting the limit switch. I also don't see any effect of changing the homming switch off-distance value on the axis's movement distance from the limit switch.

[Paciente8159]

There can be many problems that can originate that. One of them being debouncing issues on your limit switch circuit. You can try to enable this option to get some more clues . Also if you share some more details about your switch circuit it will be helpfull

[michalotto18]

The limit switch circuit is connected to the default pins defined for CNC Shield v3 and are negated in the grbl configuration to operate in NO mode, but if the limit switches are operating in NC mode, the same thing happens. It's also worth mentioning that sometimes the homming process starts for both axes simultaneously, but usually only for the X axis.

[Paciente8159]

Did you enabled the both axis homing option?

[Paciente8159]

Also it would be helpful if you provided your full configuration and settings.

[michalotto18]

cnc_config.txt
cnc_hal_config.txt

maybe the configuration files will help, I found options for homing two axes at the same time, but the axes still do not rebound by the set distance after detecting the limit switch.

[Paciente8159]

I'll try your configuration and let you know. From what you are describing me it sounds like electric problems with your switches and debouncing issues.
I'll give some feedback later

[michalotto18]

only that when using grbl 1.1h homming works correctly but the machine runs much smoother on ucnc so electrically everything is correct

[michalotto18]

You were right! The problem was electrical. After adding ferrite cores to the wires from the limit switches and connecting them in NC mode, homing worked correctly. Thanks so much for the help.

[michalotto18]

Interestingly, the original Arduino Uno doesn't respond to G-code, but manual control works fine. Everything works fine on the Arduino clone, except for the possibility of an error. I read online that the CH340 isn't immune to interference, hence the switch to the original Arduino Uno.

[Paciente8159]

Windows many times replaces the ch340 with it's own driver. I have issues programing the uno (the serial does not connect) on VSCode. After reinstalling the original drive all works fine.