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serj_ku

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  1. Here is good preview. And math here by Oskar Linde (DigitalVision). About calibration (to find good frequency) can be use manual klipper calibration it's no need accelerometer to measure it
  2. At now yes, they add it in frimware, but they don't use close loop control system (like klipper). So i think it's can be adding in gcode by slicer it's can open this technique to 8 bit boards and so on. In start it was only gcode modify: The specific parameters for the correction above was f_n=40.4 Hz, zeta=0. I got these results without making any FW changes. I instead abused the motion planner by feeding it G-code that simulated the required motion profiles. I think the results look pretty interesting and this is probably worth pursuing further.
  3. Hello, i prefer to use Cura slicer it's powerfull and I think function that I propose can be adding in furure. I wanna ask about motion shaper (input shaping (aka rrf input shaping), maybe it's have alredy exist (can't find it). This technic reduse ringing on parts (first look i can find here) person "DigitalVision" modify gcode only and get nice and clean print, so cura slicer make the code. I'm not a mathematical or programmer maybe it's easy to add this technique to it.
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