Hello, I've built a Dremel CNC. According to the guidance of Nikodem Bratnik. The problem is that the stepper motors make a rattling noise, but they don't move. I removed it again to prevent mechanical blocking. i use an arduino uno fake with grbl 0.9 with jrbl shield. i have tried it both with jrbl controller and with cncjs. Please ignore grammatical errors, I use the google translator. Please help me, I'm desperate. Greetings from Germany.
1 - The rattling noise means that your GRBL calibration for 'max rate' is too fast, and possibly also the acceleration values. Set them much lower (1/2 or 1/4) and test. Once you get movement you can increase the values to find the fastest useful values. 2 - the current value on your drivers may be too low, Google for how to set the drivers correctly.
Or 3) incorrectly wired steppers. Identify the coil pairs: see docs:blackbox:faq-identify-motor-coils [OpenBuilds Documentation]
