LV8729V and THB6128 use the same mixed decay scheme but are not the same driver. The datasheets use a lot of the same graphics and wording and both have Sanyo logos in various places. As far as I can tell, they both appear to have been designed and fab'd by Sanyo on behalf of other companies.by RCarlyle - Delta Machines
LibreOffice works too.by RCarlyle - Delta Machines
Really good discussion. I'm glad this stuff is finally becoming more widely known. (Nophead originally documented the ripple issue in 2009. Then Ed Nisley again in 2011, then me in late 2014, plus tons of others over the years.) Pololu really screwed us when they picked the default decay mode for their 498x and 8825 carriers and everybody in the 3d printing world copied them. Have you guys seeby RCarlyle - Delta Machines
Hmm, I think you need to separate this out into two separate issues: 1) Non-planar slicing with traditional 3-DOF XYZ mechanism printers (eg what Topolabs and Nick's student are doing) 2) 5D slicing with 5-DOF XYZAB mechanism printers (AB here meant in the CNC sense of rotary axes about X and Y, not just extruders) You can do a lot of stuff with just non-planar slicing. I think it can do anythinby RCarlyle - Developers
Building a 5-axis printer isn't "hard" in any meaningful sense. All the hardware design requirements, forward/inverse kinematics, numerical path solution techniques, and even force dynamics for hexapods, rotary tables, etc are perfectly well-documented in readily-available sources. It's all in the robot control academic literature. MachikeKit has some code modules that already do limited 5-axis cby RCarlyle - Developers
Necro-posting a bit here, but I just wanted to mention that I have a working* CoreXYZ design. I consider this the "true" CoreXYZ implementation. It's a four-line 3D gantry that extends the CoreXY concept into three dimensions. All four belt paths are symmetrical, and all drive forces are balanced (no racking). Diagrams, kinematics, and build log here: * Ok, it's not printing. Why? Because it neby RCarlyle - Let's design something! (I've got an idea ...)