![]() The reason why this is so important is that stepper motor-based CNCs are open-loop control and have no feedback on what the motors are doing. Stepper motors have only a finite amount of torque and the high inertial forces required to make these quick direction changes can cause them to lose steps. The problem is that these junctions create problems with real-world CNC machines, since they can’t do these immediate and instantaneous changes in direction. The Cornering Algorithm: G-code motions involve piecewise linear movements, where each junction between these linear movements immediately turns and continues on to the next linear movement. ![]() As a researcher, I’m pretty much bound to document just about everything, even if it’s pretty insignificant. strange cornering behavior, full arc support with acceleration planning, and intermittent strange deceleration issues. While grbl is still in development, I decided to take some initiative to help out and solve some problems still existing in the code, i.e. In short, it can do a lot and still has plenty of room to grow. More I had looked at it, the more I became impressed with Simen’s coding efficiency, showing what the little Arduino can do. ![]() ![]() I had spent some time to really understand the grbl source code these past few weeks, getting knee deep into the intricacies of it. Greasing the axle and pumping up the tires… on the metaphoric grbl wheel that is. ![]()
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