[Grbl_Esp32 Issue#263] A bunch of new features

Just for fun I converted a 35 year old pen plotter to Grbl_ESP32. To get it to work I had to add a bunch of new features. They were all done in a generic way that could come in handy for other projects. All are optional and add no overhead or compile size if you don’t use them.

Machine initialization: If your machine needs to configure some custom I/O or define and start some RTOS tasks, your function will be called.

User defined homing: If the normal homing isn’t right for your machine you can define a custom version

Unipolar stepper motor support: These are super cheap (<$1) stepper motors that can be a controlled with a few transistors. Custom Tool Changer Support: You can define all the moves, actions and calculations required for automatic tool changers.

Custom M30 (end of job) support: You can have the machine to always do something when a job completes, even stuff that gcode can’t do.

Check out this blog post and this video

More details on the Wiki