This person https://www.youtube.com/watch?v=5MOSnFSx8JQ&list=PLX82OaCkLR_TE00_oS2Wn3gGF5G-Zar6S
has kins here http://kvarc.extra.hu/step/motor/emc/emckinematics.html sam On 7/10/2013 2:08 PM, Charles Steinkuehler wrote: > On 7/10/2013 1:28 PM, Eric Keller wrote: >> On Tue, Oct 23, 2012 at 11:38 PM, Charles Steinkuehler >> <[email protected]> wrote: >> >>> The ultimate goal of all this is to make a delta-arm 3D printer and >>> use kinematics in LinuxCNC for the tricky math bits that are hard to >>> do on the AVR micro-controllers most 3D printers use for control. >> Now that I know more about delta robots, I was curious if anyone had >> seen code for the kinematics for a linear delta robot? I have >> articles about it, but would rather not code it up from scratch if I >> don't have to do that. There is a topic on the Lcnc forum about this, >> but the question remains unanswered. > Code is here: > https://github.com/jcrocholl/Marlin > > ...and from what I can tell (I'm not real familiar with the Marlin > codebase) the actual kinematics are in this file: > https://github.com/jcrocholl/Marlin/blob/deltabot/Marlin/motion_control.cpp > > Note that one linear gcode move is converted into lots of little tiny > steps, which are then converted to joint positions. I'm not sure how > applicable the code would be for LinuxCNC. > > For LinuxCNC, I would start with the tripod kinematics module. A delta > bot is very similar math, you're just moving the end of the joint in a > delta bot vs. changing the joint length in the existing tripod kins. > >> I blame Charles for my new-found obsession with delta robots. > Hey...I brought a plain old Cartesian printer to Wichita! It's not my > fault you go wandering around the internet clicking on YouTube videos! > > :) > ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
