![]() ![]() This is NOT a feature for an independent fourth axis. However to save precious flash and memory, this dual axis feature must share the same settings (step/mm, max speed, acceleration) as the parent motor. The step pulse and direction of the cloned motor can be set independently of the main axis motor. The dual axis feature works by cloning an axis step output onto another pair of step and direction pins. The homing cycle must home the z-axis and cloned axis in different cycles, which is already the default config. Highly recommend keeping the motors always enabled to ensure the gantry stays square with the $1=255 setting.įor Grbl on the Arduino Uno, the cloned axis limit switch must to be shared with and wired with z-axis limit pin due to the lack of available pins. To self square, both limit switches on the cloned axis must be physically positioned to trigger when the gantry is square. This requires an additional limit switch for the cloned motor. This optional dual axis feature is primarily for the homing cycle to locate two sides of a dual-motor gantry independently, i.e. These pins replace the spindle direction and optional coolant mist pins. The independent direction pin is not absolutely necessary but facilitates easy direction inverting with a Grbl $$ setting. Uno Digital 13 = Coolant (replacing spindle direction.)Īfter installing the grbl repository as a library in Arduino, uncomment out the following lines in config.h file in the grbl library folder.ĭual axis feature requires an independent step pulse pin to operate. Uno Analog Pin 4 = A-axis DUAL_STEP (used to be Optional Mist Coolant Output) Uno Analog Pin 3 = A-axis DUAL_DIRECTION (used to be Coolant Enable Output) Enabled by config define)Īnalog 4 = (Optional) Mist Coolant Output (or ALARM_STATE diagnostic light**)ĭigital 8 = Stepper Motors Enable / Disableĭigital 2 = Step Pulse X-Axis Optional dual axis feature Analog 1 = Feed Hold Button* (SAFETY_DOOR is shared with feed hold. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |